Science Assessment outcomes

Question 1

State reasons for classifying living things

Answer 1

To help us have a better connection and understanding of the concepts and to help scientists communicate with each other more clearly.

Question 2

Describe the science of taxonomy

Answer 2

Taxonomy is the science of classification

Kingdom - King
Phylum - Phil
Class - Classifies
Order - Ordinary
Family - Family’s
Genus - Generous
Species - Special

Question 3

What are the five classes of vertebrates

Answer 3

The five classes of vertebrates are
Fish
Amphibian
Reptiles
Mammals
Birds

Question 4

What is the difference between vertebrates and invertebrates?

Answer 4

Vertebrates have a backbone/spine and invertebrates don’t have a spine/backbone.

Question 5

What are the structural features of the plant kingdom?

Answer 5

The plant kingdom is made up of :
moss, fern, conifer,
flowering plants.

Question 6

Identify some examples of micro organisms.

Answer 6

Some examples of micro - organisms can be bacteria or fungi.

Question 7

What does an object have to contain matter?

Answer 7

Mass and volume.

Question 8

What is matter made of?

Answer 8

Matter is made of particles and is constantly moving.

Question 9

Do particle move faster or slower when they are hot?

Answer 9

They move faster when they are hot because they are beginning to melt and liquify.

Question 10

Do particles move faster or slower when they are cold?

Answer 10

They move slower when they are cold because the are beginning to freeze and solidate.

Question 11

What are the three states of matter?

Answer 11

Solid, Liquid and Gas.

Question 12

Describe the characteristics of living things.

Answer 12

To ability to move, breathe and reproduce.

Question 13

Compare the properties of a solid, liquid, and Gas.

Answer 13

Solids have a definite shape and volume. Liquids have a definite volume. Gases have no definite volume.

Question 14

Describe the physical changes that take place when particles change state

Answer 14

Solid - Liquid = Melting
Liquid - Solid = Freezing
Liquid - Gas = Boiling
Gas - Liquid = Condensation
Gas - Solid = Sublimation

Question 15

Define the term density

Answer 15

Density is how much mass a substance has - how heavy it is.

Question 16

How do you calculate the density of something?

Answer 16

Density is Mass divided by volume.

D = M/V

Question 17

What is a mixture?

Answer 17

A mixture is a substance made up of other particles and substances.

Like:

Cake batter
Cookies
juice
Salt water

Question 18

Describe the differences between pure substances and mixtures.

Answer 18

A pure substance is a substance with only one kind of particle that is natural like salt or gold.

A Mixture uses pure substances and mixes them together which no longer makes the pure substance pure.

Question 19

What are Solutes, Solvents and Solutions?

Answer 19

Solute - The substance that is being dissolved.

Solvent - The substance that is doing the dissolving

Solution - The mixture of a solute and a solvent

Question 20

Define substances as insoluble or soluble.

Answer 20

INSOLUBLE - A substance that cannot dissolve in a solvent.

SOLUBLE - A Substance that can fully dissolve in a solvent.

Question 21

What is a dilute substance?

Answer 21

A dilute substance has less solute (Concentrate) than solvent (Liquid). It is a weaker substance.

Question 22

What is a concentrated substance?

Answer 22

A Concentrated substance has more Solute (concentrate) than solvent (liquid). It is a stronger substance.

Question 23

What is a Saturated Substance?

Answer 23

A Saturated substance is a substance that has dissolved as much solute (dissolvent) as possible.

Question 24

How does sieving work?

Answer 24

Sieving is when Coarse particles are separated or broken up by grinding against each other or through microscopic holes.

Question 25

How does Magnetic separation work?

Answer 25

Magnetic separation is when a magnet is used to separate dry substances like iron or metal from other dry substances like sand.

Question 26

How does filtering work?

Answer 26

Filtering is when you separate harmful chemicals or viruses from other substances like viruses from the water you would filter it through a microscopic hole which only lets the water through.

Question 27

How does Distillation work?

Answer 27

The process of distillation begins with heating a liquid to boiling point. The liquid evaporates, forming a vapour. The vapour is then cooled, usually by passing it through pipes or tubes at a lower temperature. The cooled vapour then condenses, forming a distillate.

Question 28

How does evaporation work?

Answer 28

Evaporation occurs when energy (heat) forces the bonds that hold water molecules together to break. When you’re boiling water on the stove, you’re adding heat to liquid water. This added heat breaks the bonds, causing the water to shift from its liquid state to its gaseous state (water vapour), which we know as steam.

Question 29

How does crystallisation work?

Answer 29

When a product is made as a solution, one way to separate it from the solvent is to make crystals. This involves evaporating the solution to a much smaller volume and then leaving it to cool. As the solution cools, crystals form, and these can be obtained by filtration.

Question 30

What are the features of a good graph?

Answer 30

Having a title, axis labels, units, scale, accurate plotting, and lines of best fit

Question 31

Can pure substances be separated?

Answer 31

No

Question 32

Can mixtures be separated?

Answer 32

Yes.