C3

Question 1

Combustion :

Answer 1

Burning of fuel in oxygen

Question 2

Incomplete combustion

Answer 2

Burning fuel where there is a lack of oxygen

Question 3

Combustion word equation

Answer 3

Fuel+Oxygen➡️carbon dioxide +water

Question 4

Products of incomplete combustion

Answer 4

-carbon monoxide, soot, sulfur dioxide

Question 5

What is a greenhouse gas

Answer 5

A greenhouse gas is rhe radiation of heat that travels from the sun to the earth, it reaches the earth’s atmosphere and reflects the heat, but some heat is reflected back to earth by the greenhouse gases. It is a layer around the earth, a gas

Question 6

What is Global warming?

Answer 6

It is the long term heating of the earths climate system

Question 7

Consequences of global warming

Answer 7

Higher global temperature

Question 8

What is the periodic table?

Answer 8

A table that contains all the known elements positioned according to their chemical and physical properties

Question 9

Where are metals?

Answer 9

Metals are the elements beofre the staircase

Question 10

Ehat is the staircase

Answer 10

Boron till Ogneseum

Question 11

What is a non-metal

Answer 11

All the elements after the staircase

Question 12

What is the group?

Answer 12

A coloum down the periodic table

Question 13

What is a period

Answer 13

A row across the periodic table

Question 14

Where are Alkali metals ?

Answer 14

Metals in group 1

Question 15

Where are Noble gases

Answer 15

Group 18

Question 16

What does the formula of a substance represent?

Answer 16

The atoms that a substance is made up from

Question 17

How to write a formula

Answer 17

With the crossover nad valiencies

Question 18

What happens to alkali metals the further down the coloumn.

Answer 18

The further down the coloumn, the more reactive an element is

Question 19

Group 1 metals?

Answer 19

Lithium, sodium, potassium, rubidium, caesium, francium

Question 20

What is the trend and pattern when alkali metals recat with water.

Answer 20

Lithium fizzes, Francium shoots up 20/30 feet into the air

Question 21

What is the equation for metals + water.

Answer 21

Metal + water ➡️metal hydroxide +hydrogen

Question 22

Noble gases:

Answer 22

Group 18

Question 23

What are noble gases

Answer 23

-very unreactive
-all a gas
They get more dense further down the group

Question 24

Burning magnesium:

Answer 24

Over a bunsen burner with a crucible and lid

Question 25

Calculations for burning magnesium

Answer 25

Weigh the crucibe and lid first then the magnesium inside the crucible

Question 26

What should the happen to the mass when burning magnesium?

Answer 26

The mass increase should be constant

Question 27

What colour does calcium chloride turn

Answer 27

Deep orange, red

Question 28

What colour does copper chloride turn

Answer 28

Bluey green

Question 29

What colour does potassium chloride turn?

Answer 29

Neon orange

Question 30

What colour does lithium chloride turn?

Answer 30

Red

Question 31

What colour does sodium chloride turn?

Answer 31

Orange/red

Question 32

Neutralisation word equation

Answer 32

Acid +base ➡️ Salt+ Water

Question 33

What is a base?

Answer 33

An alkaline solution

Question 34

How to name salts:

Answer 34

1) first name is the metal from the base

2) surname you look at the acid name

Question 35

Base examples?

Answer 35

• metal oxides

- metal hydroxide

Question 36

Acids and carbonates word equation

Answer 36

Acids + metal carbonates ➡️ salt+ water+ carbon dioxide gas

Question 37

What does -ide mean?

Answer 37

That the compound contains only two elements

Question 38

What does -ate mean?

Answer 38

That the compound contains three elements