unit 1: states of matter

Question 1

what is a solid?

Answer 1

• solid are particle that are closely and regulary packed and the only -
• movement they can make is vibration

Question 2

what does a solid have ?

Answer 2

solid has a
* fixed mass
* fixed volume
* fixed shape
* low energy

Question 3

what happens when energy is supplied to a solid

Answer 3

• the particle vibrate faster and faster
• the force of attraction can no longer hold the particles together
• the solid melts into a liquid

Question 4

what is a liquid ?

Answer 4

liquid has a irregular arrangement
- there is force of attraction between the particles and it tumbles over

Question 5

what does a liquid have ?

Answer 5

• fixed mass and volume
• can take the shape of a container

Question 6

what happens when a liquid is heated strongly ?

Answer 6

• the particle have enough energy to break the bonds
• the liquid starts to boil and turn into gas

Question 7

what happens when a liquid is being cooled down?

Answer 7

• the energy of the particles start to slow down
• the force of attraction can hold the arrangement of partcle
• lastly, the liquid turns into a solid

Question 8

what is a gas?

Answer 8

it is when the particles are far apart and has negligible forces of attraction between the particles

Question 9

what does gas have

Answer 9

• fixed mass
• the volume of pressure is dependent
• takes up the shape of the container

Question 10

what happens when gas is cooled

Answer 10

• the particles move closer and closer
• the forces of atrraction is close enought to hold them into a liquid
• the gas will condence into a liquid

Question 11

what is sublimation?

Answer 11

sublimation is when a solid changes directly to gas

Question 12

what happens when iodine gets heated?

Answer 12

• it sublimes into a purple gas

Question 13

what happens when iodine hits the cooler part od the apparatus?

Answer 13

the purple gas turns back into iodine

Question 14

what is deposition?

Answer 14

when gas changes directly to solid

Question 15

what is the equation from ice –> water –> water vapour and back ?

Answer 15

H20(s) –> H20(I) –> H20(g)