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Questions and Answers
Which of the following is NOT an example of a chemical change?
Which of the following is NOT an example of a chemical change?
- Burning
- Rusting
- Digesting food
- Mixing salt and water (correct)
Which of the following can increase the rate of a chemical reaction?
Which of the following can increase the rate of a chemical reaction?
- Decreasing temperature
- Increasing concentration of reactants (correct)
- Increasing volume of reactants
- Decreasing pressure
What does a gas bubble indicate in a chemical reaction?
What does a gas bubble indicate in a chemical reaction?
- The reaction is producing a gas (correct)
- The reaction is producing a solid
- The reaction is endothermic
- The reaction is exothermic
