Chemistry Flashcards

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to the composition of a substance during a physical change?

Back

The composition of the substance remains the same during a physical change.

Front

What happens to the composition of a substance during a chemical change?

Back

The composition of the substance changes, resulting in new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What are neutrons?

Back

Neutrons are subatomic particles found in the nucleus of an atom that have no charge.

Front

What are protons?

Back

Protons are positively charged subatomic particles located in the nucleus of an atom.

Front

How do neutrons and protons differ in terms of charge?

Back

Neutrons have no charge, while protons have a positive charge.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Tags

NGSS.MS-PS1-1

Front

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

Back

A chemical reaction creates new substances, while a physical change does not.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Can a physical change be reversed?

Back

Yes, many physical changes can be reversed, such as melting and freezing.

Tags

NGSS.MS-PS1-4