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		<h1>PHẢN ỨNG HOÁ HỌC</h1>
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			<li>Thứ sáu - 04/08/2023 21:07</li>
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			1. Khái niệm<br />- Quá trình biến đổi chất này thành chất khác được gọi là phản ứng hóa học.<br />- Chất ban đầu bị biến đổi gọi là chất phản ứng (hay chất tham gia, chất đầu), chất mới tạo thành gọi là sản phẩm.<br />- Phương trình chữ: Tên các chất phản ứng   Tên các chất sản phẩm
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			<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:blue">I. Biến đổi vật lý và biến đổi hoá học</span></span></span></span></b></span></span></span>
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			<td style="border:solid windowtext 1.0pt; width:207.65pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:10.05pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Biến đổi vật lí</span></span></span></span></b></span></span></span></td>
			<td style="border:solid windowtext 1.0pt; width:207.65pt; border-left:none; padding:0cm 5.4pt 0cm 5.4pt; height:10.05pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Biến đổi hóa học</span></span></span></span></b></span></span></span></td>
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		<tr style="height:20.85pt">
			<td style="border:solid windowtext 1.0pt; width:44.8pt; border-top:none; padding:0cm 5.4pt 0cm 5.4pt; height:20.85pt" valign="top" width="60"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Khái niệm</span></span></span></span></b></span></span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:207.65pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:20.85pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Là hiện tượng chất biến đổi về trạng thái, hình dạng, kích thước, … nhưng vẫn giữ nguyên là chất ban đầu.</span></span></span></span></span></span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:207.65pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:20.85pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">- Là hiện tượng chất biến đổi có tạo thành chất mới.</span></span></span></span></span></span></span></td>
		</tr>
		<tr style="height:2.5pt">
			<td style="border:solid windowtext 1.0pt; width:44.8pt; border-top:none; padding:0cm 5.4pt 0cm 5.4pt; height:2.5pt" valign="top" width="60"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Giống</span></span></span></span></b></span></span></span></td>
			<td colspan="2" style="border-bottom:solid windowtext 1.0pt; width:415.3pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:2.5pt" valign="top" width="554"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Đều có sự biến đổi</span></span></span></span></span></span></span></td>
		</tr>
		<tr style="height:2.5pt">
			<td style="border:solid windowtext 1.0pt; width:44.8pt; border-top:none; padding:0cm 5.4pt 0cm 5.4pt; height:2.5pt" valign="top" width="60"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Khác</span></span></span></span></b></span></span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:207.65pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:2.5pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Không tạo thành chất mới</span></span></span></span></span></span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:207.65pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:2.5pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Có tạo thành chất mới</span></span></span></span></span></span></span></td>
		</tr>
		<tr style="height:20.85pt">
			<td style="border:solid windowtext 1.0pt; width:44.8pt; border-top:none; padding:0cm 5.4pt 0cm 5.4pt; height:20.85pt" width="60"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">Ví dụ</span></span></span></span></b></span></span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:207.65pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:20.85pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">- Nước nóng chảy, bay hơi.</span></span></span></span></span></span></span><br  />
			<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">- Hòa tan đường vào nước, ….</span></span></span></span></span></span></span></td>
			<td style="border-bottom:solid windowtext 1.0pt; width:207.65pt; border-top:none; border-left:none; border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt; height:20.85pt" valign="top" width="277"><span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">- Nến cháy, gas cháy, …</span></span></span></span></span></span></span><br  />
			<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:black">- Thức ăn bị ôi thiu, …</span></span></span></span></span></span></span></td>
		</tr>
	</tbody>
</table>
<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="color:blue">II. Phản ứng hóa học</span></span></span></span></b></span></span></span><br  />
<img alt="" height="323" src="https://khobaitap.com/uploads/news/2023_08/image.png" width="710" /><br  />
<img alt="" height="265" src="https://khobaitap.com/uploads/news/2023_08/image_1.png" width="693" /><br  />
<img alt="" height="234" src="https://khobaitap.com/uploads/news/2023_08/image_2.png" width="653" /><br  />
<img alt="" height="462" src="https://khobaitap.com/uploads/news/2023_08/image_3.png" width="480" />
<ol start="21" style="list-style-type:lower-alpha">
	<li><span style="font-size:14pt"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">1: </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">Khi đốt nến, một phần nến chảy lỏng, một phần nến bị cháy. Cây nến ngắn dần. Vậy phần nến nào đã bị biến đổi thành chất mới?</span></span></span></span></span></span></span></li>
</ol>
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Hướng dẫn: : </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Phần nến bị cháy đã bị biến đổi thành chất mới. Cụ thể nến cháy sinh ra carbon dioxide và nước.</span></span></span></span></span></span></span></span><br  />
&nbsp;
<ol start="21" style="list-style-type:lower-alpha">
	<li><span style="font-size:14pt"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">2: </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">a, </span></span></span><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">Xác định các giá trị nhiệt độ tương ứng với các bước thí nghiệm mô tả trong Hình 2.1.</span></span></span></span></span></span></span></li>
</ol>
<span style="font-size:14pt"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">b,</span></span></span><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);"> Ở quá trình ngược lại, hơi nước ngưng tụ thành nước lỏng, nước lỏng đông đặc thành nước đá. Vậy trong quá trình chuyển thể, nước có biến đổi thành chất khác không?</span></span></span></span></span></span></span><br  />
<br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Hướng dẫn: : </span></span></span></b></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">a</span></span></span><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">. Học sinh thực hiện thí nghiệm và xác định các giá trị nhiệt độ tương ứng với các bước thí nghiệm mô tả trong Hình 2.1.</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Kết quả tham khảo:</span></span></span></span></span></span></span></span>

<table class="Table" style="width:410.7pt; border-collapse:collapse; border:undefined" width="548">
	<tbody>
		<tr>
			<td style="width:84.65pt; padding:0cm 0cm 0cm 0cm" valign="top" width="113"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Bước</span></span></span></span></span></span></span></span></td>
			<td style="width:106.35pt; padding:0cm 0cm 0cm 0cm" valign="top" width="142"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">a</span></span></span></span></span></span></span></span></td>
			<td style="width:3.0cm; padding:0cm 0cm 0cm 0cm" valign="top" width="113"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">b</span></span></span></span></span></span></span></span></td>
			<td style="width:134.65pt; padding:0cm 0cm 0cm 0cm" valign="top" width="180"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">c</span></span></span></span></span></span></span></span></td>
		</tr>
		<tr>
			<td style="width:84.65pt; padding:0cm 0cm 0cm 0cm" valign="top" width="113"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Nhiệt độ</span></span></span></span></span></span></span></span></td>
			<td style="width:106.35pt; padding:0cm 0cm 0cm 0cm" valign="top" width="142"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">0&nbsp;<sup>o</sup>C</span></span></span></span></span></span></span></span></td>
			<td style="width:3.0cm; padding:0cm 0cm 0cm 0cm" valign="top" width="113"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">5&nbsp;<sup>o</sup>C</span></span></span></span></span></span></span></span></td>
			<td style="width:134.65pt; padding:0cm 0cm 0cm 0cm" valign="top" width="180"><span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">100&nbsp;<sup>o</sup>C</span></span></span></span></span></span></span></span></td>
		</tr>
	</tbody>
</table>
<br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">b. </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Trong quá trình chuyển thể, nước chỉ bị thay đổi trạng thái,&nbsp;không&nbsp;bị biến đổi thành chất khác.</span></span></span></span></span></span></span></span><br  />
&nbsp;
<ol start="21" style="list-style-type:lower-alpha">
	<li><span style="font-size:14pt"><span style="background:white"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:blue">3: </span></span></span></b><b><span style="font-size:12.0pt"><span style="line-height:115%"><span style="color:blue">Thí nghiệm về biến đổi hoá học</span></span></span></b></span></span></span></span></span></li>
</ol>
<span style="font-size:14pt"><span style="background:white"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">1. Sau khi trộn bột sắt và bột lưu huỳnh, hỗn hợp thu được có bị nam châm hút không?</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:white"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">2. Chất trong ống nghiệm (2) sau khi đun nóng và để nguội có bị nam châm hút không?</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:white"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">3. Sau khi trộn bột sắt và bột lưu huỳnh, có chất mới được tạo thành không? Giải thích.</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:white"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">4. Sau khi đun nóng hỗn hợp bột sắt và bột lưu huỳnh, có chất mới được tạo thành không? Giải thích.</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:white"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Hướng dẫn: :</span></span></span></b></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">1. Sau khi trộn bột sắt và bột lưu huỳnh, đưa nam châm lại gần ống nghiệm (1) thấy nam châm hút, suy ra hỗn hợp thu được có bị nam châm hút.</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">2. Chất trong ống nghiệm (2) sau khi đun nóng và để nguội&nbsp;<b><i>không&nbsp;</i></b>bị nam châm hút.</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">3. Sau khi trộn bột sắt và bột lưu huỳnh&nbsp;<b><i>không&nbsp;</i></b>có chất mới tạo thành, do đây chỉ là sự trộn vật lí, không có sự thay đổi về chất và lượng, sắt trong hỗn hợp vẫn bị nam châm hút.</span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">4. Sau khi đun nóng hỗn hợp bột sắt và bột lưu huỳnh, có chất mới được tạo thành. Do đã có phản ứng hoá học xảy ra, sinh ra chất mới không bị nam châm hút.</span></span></span></span></span></span></span><br  />
&nbsp;
<ol start="21" style="list-style-type:lower-alpha">
	<li><span style="font-size:14pt"><span style="background:white"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">4: </span></span></span></b><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:rgb(0, 176, 80);">Lấy một số ví dụ trong đời sống về các quá trình xảy ra sự biến đổi vật lí, biến đổi hoá học.</span></span></span></span></span></span></span></span></li>
</ol>
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">Hướng dẫn: :</span></span></span></b></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">- Một số quá trình xảy ra sự biến đổi vật lí:</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">+ Nước lỏng để một thời gian trong ngăn đông tủ lạnh hoá rắn.</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">+ Hoà tan muối ăn vào nước.</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">+ Hoà tan đường ăn vào nước.</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">- Một số quá trình xảy ra sự biến đổi hoá học:</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">+ Đốt cháy than để đun nấu.</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">+ Tượng đá bị hư hại do mưa acid.</span></span></span></span></span></span></span></span><br  />
<span style="font-size:14pt"><span style="background:rgb(255, 229, 153);"><span style="tab-stops:14.15pt 5.0cm 269.3pt 396.85pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="VI" style="font-size:12.0pt"><span style="line-height:115%"><span style="color:black">+ Dây xích xe đạp bị gỉ.</span></span></span></span></span></span></span></span><br  />
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