Phase Changes Vocabulary

a noticeably different form or state of the same substance

• molecule

• condensation

• evaporation

• phase

Tags

NGSS.MS-PS1-4

Fill in the blank: Water in the gas phase is called (a)   .

• sky

• Water vapor

• smoke

• water gas

Tags

NGSS.MS-PS1-4

____a noticeably different form or state of the same substance

• Gas

• Phase

• Solid

Tags

NGSS.MS-PS1-4

You are relaxing on some grass when you notice LIQUID water droplets have begun to seemingly disappear off the grass leaves. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

• The PHASE CHANGE that has occurred is EVAPORATION and the molecule ARRANGEMENT has become FARTHER APART.

• The PHASE CHANGE that has occurred is FREEZING and the molecule ARRANGEMENT has become CLOSER.

• The PHASE CHANGE that has occurred is MELTING and the molecule MOVEMENT has become FASTER.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What does "phase" refer to?

• A type of chemical reaction

• A noticeably different form or state of the same substance

• A process where a substance heats up

• A change in molecular structure

Tags

NGSS.MS-PS1-4

Which of the following best explains why "molecular attraction" is important in phase changes?

• It determines how molecules repel each other in a substance.

• It affects how molecules pull together, influencing whether a substance is solid, liquid, or gas.

• It controls the temperature of the substance directly.

• It causes molecules to move freely in all directions.

Tags

NGSS.MS-PS1-4

A phase is a noticeably different form or state of the same substance.

• True

• False

Tags

NGSS.MS-PS1-4

Liquid to Gas

• melting

• vaporization

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Melting

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What is the process called when a solid turns directly into a gas?

• Sublimation

• Condensation

• Evaporation

• Freezing

Tags

NGSS.MS-PS1-4