Classification and States of Matter

Which state of matter is being described? Attractive forces between particles in a sample of matter are strong and pull the particles close together, keeping them in their positions.

• solid

• liquid

• gas

• plasma

What happens to liquid water particles when energy is removed?

• They move closer together, they slow down.

• They move farther apart and speed up.

Tags

NGSS.MS-PS1-4

What state of matter is described?

Has a weak attraction of particles:

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

Vaporization is when a _________ changes into a _________.

• liquid, gas

• solid, gas

• solid, liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the measure of average kinetic energy?

• temperature

• heat energy

• thermal energy

Tags

NGSS.MS-PS3-4

The motion of all the particles AND the distance between them is what?

• temperature

• thermal energy

• kinetic energy

Tags

NGSS.MS-PS1-4

A change in the state of matter is caused if enough ____________ is added to or removed from an object.

• force

• thermal energy

• temperature

Tags

NGSS.MS-PS1-4

In a chemical formula, the number of each type of atom in the compound is shown by numbers called _____________.

• superscripts

• digits

• subscripts

Ethanol has six hydrogen atoms, two carbon atoms, and one oxygen atom. What is its chemical formula?

• C₆H₂O

• C₂H₆O

• CHO

Tags

NGSS.MS-PS1-1

Sugar has a chemical formula of C₁₂H₂₂O₁₁.

Which element in the formula has the most number of atoms?

• oxygen

• hydrogen

• carbon

Tags

NGSS.MS-PS1-1