Science Test Friday 8th Of December 2023

Question 1

What is filtration

Answer 1

The process in which solid particles in a liquid or gaseous fluids are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles

Question 2

What is evaporation?

Answer 2

Evaporation is a type of vaporisation that occurs on the surface of a liquid as it changes into the gas phase . High concentration of the evaporating substance in the surrounding gas significantly slows down evaporation, such as when humidity affects rate of evaporation of water

Question 3

What is chromatography?

Answer 3

Chromatography is a laboratory technique for the separation of a mixture into its components. The mixture is dissolved in a fluid solvent called the mobile phase . Which carries it through a system on which a material called the stationary pass is fixed .
(According to google)

Question 4

What is distillation ?

Answer 4

The action of PURIFYING a liquid by a process of heating and cooling

Question 5

What is a condenser? ( picture it and label it in your head)

Answer 5

Condenser is a machine used for filtration
E.g salty water into the condenser , use a Bunsen burner to make the water evaporate and rise and the salt will stay at the bottom , the water then condenses at the side ( because of the cool tap water that is flowing) and will be poured out fresh

Question 6

What was the skittle’s chromatography experiment?

Answer 6

Take a sheet of chromatography paper and put dots on it using skittle water , the place it in a beaker with water and the colours will separate again

Question 7

How to measure area?

Answer 7

Multiply length by width

Question 8

Explain the form of particles in a solid

Answer 8

Closely packed together and vibrating

Question 9

Explain the particle form of a gas

Answer 9

All over the place ( flying in a way)

Question 10

Explain the particles in a liquid?

Answer 10

Still close together but with larger gaps between particles