Homework

Front

What is a Chemical Change?

Back

A chemical change occurs when substances that make up an object are changed into another substance.

Front

Can you always see a Chemical Change?

Back

No, not all chemical changes are visible.

Front

True or False: Most chemical changes can be reversed.

Back

False, most chemical changes cannot be reversed.

Front

What is a Precipitate?

Back

A precipitate is the formation of a solid when two liquids combine.

Front

What are examples of Chemical Changes?

Back

Fizzing, foaming, and burning are all examples of chemical changes.

Front

What happens during a Physical Change?

Back

A physical change happens when matter changes size, shape, or form but not the substance.

Front

What is the difference between Chemical Change and Physical Change?

Back

Chemical change alters the substance itself, while physical change only alters its form.

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

Rust forming on iron is an example of a chemical change.

Front

What is the role of heat in Chemical Changes?

Back

Heat can provide the energy needed for a chemical change to occur.