thermal physics

Question 1

states of matter

Answer 1

-solid
-liquid
-gas

Question 2

solid

Answer 2

-fixed shape
-fixed volume
-cannot be squashed

Question 3

liquid

Answer 3

-no fixed shape
-fixed volume
-cannot be squashed

Question 4

Gas

Answer 4

-no fixed shape
-no fixed volume
-can be squashed

Question 5

solid to liquid

Answer 5

melting

Question 6

liquid to gas

Answer 6

evaporation

Question 7

gas to liquid

Answer 7

condensing

Question 8

liquid to solid

Answer 8

solidifying

Question 9

As particle heat up,;;

Answer 9

they gain more kinetic energy and so move faster

Question 10

as particles cool down..

Answer 10

it loses kinetic energy and slow down

Question 11

the lowest possible temperature

Answer 11

-273 degree

Question 12

Arrangement of solid

Answer 12

closely packed together

Question 13

arrangement of liquid

Answer 13

the particles have a little distance rather than a solid

Question 14

particles of gas

Answer 14

the particles are far apart and they collide wth each other

Question 15

brownian motion

Answer 15

the random motion of microscopic particles

Question 16

why does gas cause pressure on the walls of its container

Answer 16

because the gas particles are constantly colliding with the walls

Question 17

what happens to gas when it is heated

Answer 17

the higher the temperature, the faster the particles are moving

Question 18

what happens when gas is compressed

Answer 18

volume decreases, pressure increases

Question 19

absolute 0

Answer 19

a temperature where particles have no kinetic energy

Question 20

kelvin temp

Answer 20

-273

Question 21

kelvin equation

Answer 21

K=273+temp

Question 22

boyle’s law

Answer 22

pressure increase,volume decreases

Question 23

thermal expansion

Answer 23

when solid,liquid and gas expand when their temp increases

Question 24

which expand the most

Answer 24

gas

Question 25

which expand the least

Answer 25

solid

Question 26

how does evaporation cool our body

Answer 26

by absorbing heat energy from your skin as sweat turns into vapor

Question 27

conduction

Answer 27

the process by which heat energy is transmitted through collision between neighbourthing atoms or molecule

Question 28

convenction

Answer 28

the process in which heat energy get transporsted from hotter areas to cooler areas

Question 29

difference between evaporation and boiling

Answer 29

evaporation happens at the surface of a liquid at any temperature and boiling happens throughout the entire liquid at a specific temp called boiling point

Question 30

big puddle evaporate faster because

Answer 30

because a larger surface area exposes more water molecules to the air, allowing for faster evaporation.

Question 31

thermal radiation

Answer 31

electromagnetic radiation emitted from a material that is due to the heat of the material

Question 32

thermal conduction

Answer 32

the diffusion of thermal energy (heat) within one material or between materials in contact

Question 33

radiation

Answer 33

energy given off by matter in the form of rays or high-speed particles