Congratulations on completing the quiz today on density! Here is the new material for today:
Chapters 5.2 and 5.3, Physical and Chemical Changes
Learning Goals: Understand the difference between physical and chemical changes.
Success Criteria: Be able to distinguish between physical and chemical changes.
We completed this handout today:
We tried to distinguish whether or not the following are physical or chemical changes.
Here are 5 clues that will help you.
- Colour changes.
- Bubbles form in a liquid.
- A solid forms when two liquids are mixed, called a precipitate.
- Heat or light is released.
- Difficult to reverse.
Remember, these are just clues. The only way to really determine if a chemical change has occured is to find out if the particles have changed forming a new substance.
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Cutting a carrot. |
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A carrot going bad. |
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Boiling an egg. |
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Here's the egg after it's boiled. |
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Making Jello. |
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Yummy Jello! |
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Boiling water. |
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Firewood burning. |
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Dynamite exploding. |
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Baking a cake. |
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Ice freezing on a pond. |
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Bending a paperclip. |
Homework:
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