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Questions and Answers
What is a chemical reaction?
What is a chemical reaction?
- A process where substances change temporarily without forming new substances
- A process where substances react to form new substances with different properties (correct)
- A process where substances change color and evolve gas
- A process where substances change state, but retain their original properties
What is a chemical equation?
What is a chemical equation?
- A symbolic representation of a chemical reaction with reactants on the left and products on the right (correct)
- An equation showing physical changes of substances
- An equation representing changes in state and color of substances
- An equation representing the evolution of gas during a reaction
What determines a balanced chemical equation?
What determines a balanced chemical equation?
- It shows the same number of each type of atom on both sides of the equation (correct)
- It demonstrates an equal volume of reactants and products
- It represents an equal amount of reactants and products
- It indicates an equal mass of reactants and products
Which changes indicate a chemical reaction has taken place?
Which changes indicate a chemical reaction has taken place?
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What distinguishes a physical change from a chemical change?
What distinguishes a physical change from a chemical change?
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