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What can be inferred about a chemical change?
What can be inferred about a chemical change?
- The temperature of the substance changes.
- The substance changes color.
- The nature and identity of the initial substance change. (correct)
- The substance changes state from solid to liquid.
What is the purpose of Activity 1.1 according to the text?
What is the purpose of Activity 1.1 according to the text?
- To find the answer to what is meant by a chemical reaction. (correct)
- To measure the temperature change in substances.
- To observe physical changes in substances.
- To identify changes in color of substances.
What is a chemical reaction?
What is a chemical reaction?
- A change in physical state of a substance.
- A process where a chemical change occurs. (correct)
- A change in color of a substance.
- A change in temperature of a substance.
What happens when grapes get fermented?
What happens when grapes get fermented?
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How do we know that a chemical reaction has taken place?
How do we know that a chemical reaction has taken place?
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What happens when food gets digested in our body?
What happens when food gets digested in our body?
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What is the outcome when milk is left at room temperature during summers?
What is the outcome when milk is left at room temperature during summers?
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What happens when an iron tawa/pan/nail is left exposed to humid atmosphere?
What happens when an iron tawa/pan/nail is left exposed to humid atmosphere?
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What do we call it when a chemical change occurs?
What do we call it when a chemical change occurs?
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What happens when we respire?
What happens when we respire?
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