Chemical Reactions unit assessment spring 2024

Front

What is a chemical process?

Back

A chemical process involves a change in the chemical composition of substances, resulting in the formation of new substances. Example: Burning a marshmallow.

Front

How many atoms of Hydrogen are in H₂O?

Back

2

Front

How many different elements are present in the molecule NH₄C₂H₃O₂?

Back

4

Front

What is the unit of measure for the amount of matter?

Back

Mass

Front

How many different elements are present in H₂COCH₂?

Back

3

Front

What is the definition of a chemical reaction?

Back

A chemical reaction is a process where reactants are transformed into products through the breaking and forming of chemical bonds.

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

What is a reactant?

Back

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

Front

What is a product in a chemical reaction?

Back

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

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.