EOY Y7 Revision Chemistry

Question 1

What are the elements in the middle of the periodic table called

Answer 1

Transition metals

Question 2

What is the charge of the electrons

Answer 2

Negative

Question 3

What is the charge of the protons

Answer 3

Positive

Question 4

What is the charge of the Neutrons

Answer 4

Neutral

Question 5

What are all things around us made of

Answer 5

Particles

Question 6

What is the atomic number also known as

Answer 6

The proton number

Question 7

What is the hazard sign with a flame

Answer 7

It means it is flammable

Question 8

What is the hazard sign with the flame and O on

Answer 8

Oxidising flame

Question 9

What is the hazard sign with the dead fish and dead tree

Answer 9

Environmental hazard

Question 10

What is the hazard sign with a bottle breaking

Answer 10

Gas under pressure

Question 11

What is the hazard sign with a ball breaking

Answer 11

Explosive

Question 12

What is the hazard sign with skull and crossbones

Answer 12

Toxic

Question 13

What is the hazard sign with a liquid poured on hands

Answer 13

Corrosive

Question 14

What is the 3 legged thing that you put over a bunsen burner

Answer 14

Tripod

Question 15

What flame do you put the bunsen burner on when you heat something

Answer 15

Roaring

Question 16

Why is the open air hole the hottest

Answer 16

Because the flame is oxidising

Question 17

What is the crust made of

Answer 17

rock

Question 18

What is the core made of

Answer 18

Iron and nickel

Question 19

What state is the inner core.

Answer 19

Solid

Question 20

What state is the outer core

Answer 20

Liquid

Question 21

How would you describe thee arrangement of particles in a solid

Answer 21

Neat

Question 22

How would you describe the arrangement of particles in a gas

Answer 22

random

Question 23

Give 2 properties of liquids

Answer 23

It can flow and cannot be compressed

Question 24

Give 2 properties of solids

Answer 24

It cannot flow and cannot be compressed

Question 25

Give 2 properties of gases

Answer 25

they can flow and can be compressed

Question 26

approximately what percent of the Earth's atmosphere is oxygen

Answer 26

80%

Question 27

How are metamorphic rocks formed

Answer 27

heat&pressure

Question 28

Which process separates solids and liquids and collects the both at the end

Answer 28

Distillation

Question 29

What process separates a insoluble solid from a liquid

Answer 29

Filtration

Question 30

What is the liquid at the end of filtration called

Answer 30

Filtrate

Question 31

What is the solid left at the end of filtration

Answer 31

Residue

Question 32

How do you test for oxygen

Answer 32

Place a glowing splint in a boiling tube and if it relights then there is oxygen.

Question 33

How do you test for hydrogen

Answer 33

Place a glowing splint on top of a boiling tube and if a pop noise occurs then there is hydrogen.

Question 34

How do you test for Carbon dioxide

Answer 34

You get limewater then shake it a bit and if it turns milky then it is in the presence of Carbon dioxide

Question 35

What is in the nucleus of an atom

Answer 35

protons and neutrons

Question 36

What is orbiting the nucleus on the shells of an atom

Answer 36

Electrons

Question 37

What is an element

Answer 37

A substance made purely of one type of atom

Question 38

What is a compound

Answer 38

A substance made of 2 or more types f atoms chemically bonded together

Question 39

What is a mixture

Answer 39

A substance made of 2 or more types of atoms that aren't chemically bonded together

Question 40

Why do you have to draw the line on a chromatogram in pencil

Answer 40

because pencil cannot dissolve in water

Question 41

What is the process in which a liquid turns to a solid

Answer 41

Freezing

Question 42

What is the process in which liquid turns to gas naturally

Answer 42

Evaporation

Question 43

What is the process in which liquid turns to gas unnaturally

Answer 43

boiling

Question 44

What is the point which liquid turns to a gas

Answer 44

boiling point

Question 45

What is the point which liquid turns to solid

Answer 45

freezing point

Question 46

What is the point which solid turns to liquid

Answer 46

melting point

Question 47

What is the process where gas turns to liquid

Answer 47

condensation

Question 48

What is the process in which gas turns to solid and solid turns to gas

Answer 48

sublimation

Question 49

What does the ozone layer do

Answer 49

Protect us from solar winds and solar vibrations

Question 50

What do you use for liquids that won't release gas

Answer 50

beaker

Question 51

What do you use for liquids that do release gas

Answer 51

conical flask

Question 52

What piece of apparatus do you use to measure liquids

Answer 52

measuring cylinder

Question 53

What is a funnel for

Answer 53

to hold filter paper or to carefully pour liquid into containers

Question 54

What is a pipette used for

Answer 54

to have a controled amount of liquid in a experiment

Question 55

How can you increase gas pressure

Answer 55

By heating particles up

Question 56

How does gas pressure occur

Answer 56

When particles collide pressure increases

Question 57

How does heat increase gas pressur

Answer 57

The thermal energy is transferred to the particles making them move lots and collide more often increasing the pressure.

Question 58

What is the mesh used to hold evaporating basins on a tripod above the bunsen burner

Answer 58

wire gauze

Question 59

In a measuring cylinder when you pour the measurement won't be flat it will be a curved line what is this called

Answer 59

The meniscus

Question 60

Where on the meniscus to take the measurement from

Answer 60

The bottom of the meniscus.