Kinetic Matter

Question 1

What is matter?

Answer 1

Matter is anything that has mass and takes up space

Question 2

What are the states of matter

Answer 2

Solid, liquid and gas

Question 3

Solids

Answer 3

Can’t change the shape, can’t be compressed, tightly packed

Question 4

Liquids

Answer 4

Can change the shape easily, can’t be compressed, a little spread out

Question 5

Gases

Answer 5

Can change the shape easily, can be compressed, big spaces between

Question 6

Describe the Kinetic model of matter

Answer 6

All matter is made up of small particles that are always in motion and exert force on eachother

Question 7

Solids properties

Answer 7

Rigid, definite volume and shape, vibrate in place, packed against each other

Question 8

Liquids properties

Answer 8

Definite volume, able to change shape, can roll over each other and flow, loose

Question 9

Gases properties

Answer 9

No definite volume or shape, move fast and freely, big spaces

Question 10

Process of diffusion

Answer 10

Molecules randomly move from area where they are most concentrated to area of less concentration.

Question 11

Is water high or low viscosity

Answer 11

Low meaning particles are further apart

Question 12

Is honey high or low viscosity

Answer 12

High meaning particles are closer

Question 13

Is milk high or low viscosity

Answer 13

low

Question 14

Is oil high or low viscosity

Answer 14

low

Question 15

What is evaporation?

Answer 15

Evaporation is from the surface of liquid and leads to cooling.

Question 16

What is boiling

Answer 16

Boiling is throughout liquid and doesn’t result in cooling

Question 17

What happens to particles when you heat something

Answer 17

When you heat ice the particles separate making it flow

Question 18

What happens to particles when you cool something

Answer 18

When you cool water, particles’ pack together making it solidify

Question 19

Difference in density for something needing to float on a liquid.

Answer 19

Anything will float in water if the density is equal or less than water density

Question 20

Density Gas

Answer 20

low density, lots of empty space between particles

Question 21

Density liquids

Answer 21

High density, particles close

Question 22

Density solids

Answer 22

High density, particles tightly packed

Question 23

What happens to matter when heated and cooled.

Answer 23

Most matter expands when heated and contracts when cools

Question 24

Applications of thermal contractions and expansions

Answer 24

Engine coolants, Mercury in thermometer

Question 25

Difference between temperature and Thermal energy

Answer 25

Temperature measures average kinetic energy of particles in substance. Thermal energy measures the total kinetic energy of particles in substance

Question 26

Conduction

Answer 26

When heat from flames touch pot, heat spreads through solid metal pot

Question 27

Convection

Answer 27

Heat transfer through water, bottom water gets heat, heat rises, moves in circle motion e.g. boiling water

Question 28

Radiation

Answer 28

When heat goes on object without touching it so air gets hot which makes object hot. E.g. heat from the sun

Question 29

What can black objects do

Answer 29

They are good emitters and absorbers of radiant energy

Question 30

Examples of thermal energy in Homes, industry and nature

Answer 30

Home: Kettle on stove to boil, iron on clothes Industry: Cement, glass Nature: Solar heat, hot springs

Question 31

Designs that promote thermal energy transfer

Answer 31

Black cars

Question 32

Designs that reduce thermal energy transfer

Answer 32

Insulation, heat reflecting roofs

Question 33

Measuring techniques for Temperature and mass

Answer 33

Temperature: Thermometer Mass: Balances and scales