All of the following are physical changes except:

What happens during a chemical change?

All of the following are signs of a chemical reaction except one. Which is NOT a sign of a chemical react

When two substances were combined, bubbles formed and the temperature dropped. What does this likely mean?

How do you know whether a chemical reaction between two substances has occurred?

What happens to atoms in a chemical reaction?

Which of the following is an example of a chemical reaction?

Which observation would most likely indicate that an exothermic reaction has occurred?

Which observation would most likely indicate that an endothermic reaction has occurred?

What does the law of conservation of matter state?

The mass of 2 reactants equals 10 grams. After the chemical reaction, what should be the total mass of the products?

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