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Phases of Matter and Changes

Phases of Matter and Changes

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explores the phases of matter, focusing on solids, liquids, and gases. It explains how energy, particularly heat, affects the movement and attraction of atoms, leading to phase changes. The tutorial introduces and elaborates on phase change diagrams, illustrating how substances transition between solid, liquid, and gas states. Key concepts such as melting, freezing, boiling, and condensing are discussed, with examples like ice and chocolate to demonstrate these changes. The video emphasizes understanding phase change diagrams and their application to different substances.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the three main phases of matter discussed in the video?

Solid, Liquid, Plasma

Solid, Liquid, Gas

Solid, Gas, Plasma

Liquid, Gas, Plasma

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the atoms in a solid when heat is added?

They move closer together

They vibrate more and move slightly apart

They become larger

They stop moving

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is required to break the attraction between molecules in a solid?

Adding light

Adding cold

Adding heat

Removing pressure

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a phase change diagram, what does the horizontal line represent?

A change in state

A constant volume

A constant temperature

A change in pressure

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At what temperature does water start to boil according to the phase change diagram?

100°C

50°C

0°C

150°C

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term used when a gas turns into a liquid?

Sublimation

Condensation

Evaporation

Freezing

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main factor that determines the phase of a substance?

Shape

Weight

Temperature

Color

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