Unit 3 Chemistry Practice Test 2023

Front

What is a compound?

Back

A compound is made up of two or more atoms of different elements bonded together.

Front

What state of matter has a definite shape and definite volume?

Back

Solid.

Front

What type of change occurs when salt dissolves in water?

Back

Physical Change.

Front

What happens to water on the road when it freezes?

Back

It undergoes a Physical Change.

Front

Which of the following is an example of an ionic bond? CaCl2, CO2, NH3, CH4?

Back

CaCl2.

Front

What is the definition of an ionic bond?

Back

An ionic bond is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

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.

Front

What is the definition of a solid?

Back

A solid is a state of matter characterized by its definite shape and volume.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is the definition of a chemical change?

Back

A chemical change is a process that leads to the transformation of one substance into another.