TOPIC 1

Question 1

What does flow mean

Answer 1

• flow means a liquid or gas moving from one place to another

Question 2

what are the basic building blocks of all materials

Answer 2

• the basic building blocks of all materials are atoms and molecules or known as the particles of matter

Question 3

what are the three states of matter

Answer 3

• solid
• liquid
• gas

Question 4

what is a solid? what is an example

Answer 4

• is the state of matter in a substance that has a definite shape. An example would be a sugar cube

Question 5

what is a liquid? give a example

Answer 5

• is the state of matter of a substance that has a definite volume but no definite shape. An example would be water.

Question 6

what is a gas? and give an example

Answer 6

is the state of matter of a substance that has neither a definite shape nor definite volume. An example would be oxygen

Question 7

how do particles in a solid interact with eachother

Answer 7

• they interact by when they are close together and they have no room to move around freely. They can only vibrate.

Question 8

how do particles inteact in a liquid

Answer 8

the particles that make up a liquid have enough energy to pull away from eachother while at the same time vibrating close in small clusters.

Question 9

how do particles in a gas interact with eachother

Answer 9

Gas particles are so far apart form eachother that their is an enourmous amount of empty space between them

Question 10

what is morphing

Answer 10

is a special film effect that mimics the changes we see in the states of matter.

and example is in the terminator when the policman morphs into liquid.

Question 11

what are changes of state

Answer 11

changes of state occur when the particles of a substance gain or lose energy.

Question 12

what is this an example of

Answer 12

the particle model

Question 13

what are plastic shopping bags made out of ?

Answer 13

plastic shopping bags are made out of polyethyne.

Question 14

why is styrofoam fluffy

Answer 14

it is expanded polystrene The solid plastic contains millions of tiny bubbles of gas or air. It is the bubbles that make it fluffy and a great insulator and shock absorbing material.

Question 15

what is a thermoplastic

Answer 15

thermoplastic is a type of plastic that becomes soft whem heated and hard when cooled.

Question 16

what are the different types of plastics.

Answer 16

Polyethylene Terephthalate (PETE or PET)

High-Density Polyethylene (HDPE)

Polyvinyl Chloride (PVC)

Low-Density Polyethylene (LDPE)

Polypropylene (PP)

Polystyrene or Styrofoam (PS)