Ice Melting:
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Ice Melting: Is there evidence of a chemical reaction?
Ice Melting: Is there evidence of a chemical reaction?
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Ice Melting:
Ice Melting: Is there evidence of a chemical reaction?
Candles burn:
Candles burn: Is there evidence of a chemical reaction? Select all that apply.
Baking Soda and Vinegar Mixing:
Baking Soda and Vinegar Mixing: Is there evidence of a chemical reaction?
How many Ca (calcium) atoms are there before the reaction?
How many O (oxygen) atoms are there before the reaction?
How many H (hydrogen) atoms are there before the reaction?
How many Ca (calcium) atoms are there after the reaction?
How many O (oxygen) atoms are there after the reaction?
How many H (hydrogen) atoms are there after the reaction?
What do you notice about the number of atoms before and after the chemical reaction?
Did any atoms created or destroyed (appear or disappear)?
Would the weight of the substances change before and after the chemical reaction?
What happens to the atoms and molecules before and after a chemical reaction?
The picture below is the beginning of a chemical reaction.
Choose the correct model after chemical reaction.
Explain why you chose that answer for Question 18.
Is this a chemical reaction? Explain why.
Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
Is this a chemical reaction? Explain why.
Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
Is this a chemical reaction? Explain why.
Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
Is this a chemical reaction? Explain why and explain what happened to the atoms.
Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
