Physical and Chemical Changes

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 chemical composition, while a chemical change results in the formation of one or more new substances with different properties.

Front

Is a new substance formed in a physical change?

Back

No, a new substance is not formed in a physical change.

Front

What is an example of a physical change?

Back

Cutting your hair is an example of a physical change.

Front

What is the building block of matter?

Back

The atom is the building block of matter.

Front

What does the element symbol represent?

Back

The element symbol represents a specific chemical element, typically consisting of one or two letters.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the individual substances are evenly mixed and cannot be easily distinguished.

Front

What is a chemical change?

Back

A chemical change is a process that involves the transformation of one or more substances into different substances with new chemical and physical properties.

Front

Can you give an example of a chemical change?

Back

An example of a chemical change is the rusting of iron.

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; it is conserved.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its chemical identity.