Front

What type of motion do particles in a gas exhibit?

Back

Particles in a gas move freely and randomly, similar to how teens run around a soccer field.

Front

How many protons does Aluminum-28 have?

Back

Aluminum-28 has 13 protons.

Front

In a neutral atom, how many electrons does it have if it has 13 protons?

Back

A neutral atom with 13 protons has 13 electrons.

Tags

NGSS.MS-PS1-1

Front

What is rusting an example of?

Back

Rusting is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How many valence electrons does Beryllium have?

Back

Beryllium has 2 valence electrons.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition throughout.

Front

Can you give examples of heterogeneous mixtures?

Back

Examples of heterogeneous mixtures include salad, sand and salt, and boxes B, E, G, H.

Front

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

Back

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

Tags

NGSS.MS-PS1-2

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What happens to iron nails when they rust?

Back

When iron nails rust, they undergo a chemical change due to the reaction with oxygen and moisture.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5