Metals and new materials

Question 1

Property

Answer 1

Can be measured and is quoted with a unit

Question 2

Physical property

Answer 2

Can be observed without the identity of the substance. Colour, density, hardness malting point, ductility…

Question 3

Chemical property

Answer 3

The ability if a substance to undergo a specific chemical change. Flamability, reactivity, PH, solubility…

Question 4

Gases in the air

Answer 4

Nitrogen- 78%
Oxygen- 20.9%
Argon gases- 0.9%
Carbon dioxide- 0.003%
Other gases- 0.17%

Question 5

Which gas reacts with MOST metals

Answer 5

Oxygen

Question 6

Test for oxygen

Answer 6

Glowing splint relights

Question 7

Test for hydrogen

Answer 7

Lit splint goes out with a squeacky pop

Question 8

Test for Carbon Dioxide

Answer 8

Lime water turns milky/ cloudy

Question 9

Oxygen molecule is formed…

Answer 9

by two atoms

Question 10

Metal + oxygen —>

Answer 10

Metal oxide

Question 11

Rust is

Answer 11

Iron oxide

Question 12

How does rust compares with iron

Answer 12

It has poorer chemical properties

Question 13

Best conditions for rust to form

Answer 13

Water and oxygen

Question 14

Metal + water —>

Answer 14

Metal hydroxide + hydrogen

Question 15

Metal + acid —>

Answer 15

Salt + hydrogen

Question 16

Metal oxide + acid —>

Answer 16

Salt + water

Question 17

Metal carbonate + acid

Answer 17

Salt + Carbon dioxide + water

Question 18

Salt

Answer 18

A compound formed from neutralisation

Question 19

Laboratory acids

Answer 19

Nitric acid- HNO₃
Sulphuric acid- H₂SO₄
Hydrochloric acid- HCl

Question 20

What affects the reaction of metal with an acid ?

Answer 20

Amount of acid
Temperature
Concentration of acid

Question 21

Displacement reaction is a…

Answer 21

Reaction in which a more reactive element desplaces a less reactive element from its compound

Question 22

Law of conservation of mass

Answer 22

Mass cant’t be created or destroyed

Question 23

Combustion reaction

Answer 23

Fuel (Hydrocarbon) + oxygen —> Carbon dioxide + water + (light and heat)

Question 24

Examples of Hydrocarbon

Answer 24

Methane, Ethane, Propane, Butane…

Question 25

Metal properties

Answer 25

Magnetic, good conductor, shiny, dense, ductile

Question 26

What is the reactivity series?

Answer 26

A lists that orders elements from most to least reactive

Question 27

A chemical reaction has taken place when…

Answer 27

Bubbling/ fizz, change in colour, heat is given off

Question 28

How is carbon used to displace metals

Answer 28

Carbon is added to a compound and heated up in a blast furnace. It then displaces the compound.

Question 29

The reactivity series is:

Answer 29

Potassium 
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon 
Zinc 
Iron 
Hydrogen
Copper
Silver
Gold