HT Particle Model Of Matter

Question 1

Matter

Answer 1

Is anything that has mass and takes up space.

Matter is made of particles.

Question 2

Energy

Answer 2

Has no mass
Doesn’t take up space
Energy has the ability to move particles or do work

Question 3

Particle model of matter

Answer 3

1. All substances are made of particles that are too small to be seen
2. The particles are always in motion (kinetic energy)
3. The particles have spaces between them
4. The motion of particles increases as temp Increases and decreases as temp decreases

Question 4

Characteristics of a solid

Answer 4

Particles are:

Packed closely together
Barely moving (vibrating)
Have a definite volume and shape

When heated the particles will take in more energy pushing in each other until they form a liquid

Question 5

Characteristics of a liquid

Answer 5

Particles are:

Loosely arranged (bigger spaces)
In constant motion
Have a definite volume
Have no definite shape (take the shape of a container)

When heated the particles will take in more energy pushing on each other until they form a gas

Question 6

Characteristics of gas

Answer 6

Particles are:

Floating freely (big spaces)
In constant motion
No definite volume (can be compressed)
No definite shape (fills the container)

These particles have the MOST energy from heat that they can take in

Question 7

Evaporation

Answer 7

Liquid to gas

Question 8

Condensation

Answer 8

Gas to liquid

Question 9

Melting

Answer 9

Solid to liquid

Question 10

Freezing

Answer 10

Liquid to solid

Question 11

Sublimation

Answer 11

Solid to gas

Question 12

Deposition

Answer 12

Gas to solid

Question 13

What happens when energy is added to molecules

Answer 13

Increase their motion

Move further and further apart

Question 14

What happens when energy is removed from the molecules

Answer 14

Decrease their motion

Move closer together