Physical and Chemical Changes

Front

What is the definition of a physical change?

Back

A physical change is a change in size, shape, or state of matter that does not create something new.

Front

What is the definition of a chemical change?

Back

A chemical change is a process that results in the formation of new chemical substances, often referred to as a chemical reaction.

Front

True or False: Boiling is a physical change.

Back

True, boiling is a physical change as it involves a change in the state of matter from liquid to gas.

Front

What happens to a sugar cube when it is placed in hot water?

Back

The sugar cube will dissolve in the hot water.

Front

What is another term for a chemical change?

Back

Another term for a chemical change is a chemical reaction.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Rusting of iron is an example of a chemical change.

Front

What is the role of thermal energy in boiling?

Back

Thermal energy is added to a liquid to change it into a gas during boiling.

Front

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

Back

A physical change does not create new substances, while a chemical change results in the formation of new substances.

Front

What is the process called when a solid turns into a liquid?

Back

The process is called melting.