Chemical Reactions Unit Test Part 2 11-20

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature.

Front

In a chemical reaction, what is a reactant?

Back

A reactant is a substance that undergoes a change during a chemical reaction.

Front

In a chemical reaction, what is a product?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What does it mean if a solid disappears in a reaction?

Back

If a solid disappears in a reaction, it indicates a chemical reaction has occurred, unless it is just dissolving.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

How do you calculate the mass of a missing reactant in a chemical reaction?

Back

To find the mass of a missing reactant, subtract the mass of the products from the total mass of the reactants.

Front

What happens to temperature in an endothermic reaction?

Back

In an endothermic reaction, the temperature of the surroundings decreases.

Front

What happens to temperature in an exothermic reaction?

Back

In an exothermic reaction, the temperature of the surroundings increases.

Front

Give an example of an endothermic reaction.

Back

An example of an endothermic reaction is the reaction between baking soda and vinegar.