Unit 4 _ Chemical Reactions TEST

Front

What does the plus (+) sign mean in a chemical reaction?

Back

The plus (+) sign indicates that substances combine or react with each other.

Front

Which law explains that the total mass remains constant during a chemical reaction?

Back

The law of conservation of mass states that the total mass remains constant during a chemical reaction.

Front

What type of reaction is represented by the equation A + BC → AC + B?

Back

This equation represents a single replacement reaction.

Front

What type of reaction is represented by the equation AB → A + B?

Back

This equation represents a decomposition reaction.

Front

What type of change results in the formation of a brand new substance?

Back

A chemical change results in the formation of a brand new substance.

Front

What is a chemical reaction?

Back

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

Front

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

Back

A physical change alters the form or appearance of a substance without changing its composition, while a chemical change results in the formation of new substances.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical 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 a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex substance.