Paper 1 Chemistry

Question 1

Lithium in water

Answer 1

It fizzes

Question 2

Sodium in water

Answer 2

Melts to form a ball and slowly burns to disappear

Question 3

Potassium in water

Answer 3

Metal melts and floats. Lilac flame

Question 4

Increase in reactivity in group 1 on the periodic table

Answer 4

. Atoms become larger

. Outer electron becomes further away from the nucleus

Question 5

Group 1 and Group 7

Answer 5

Group 1 = Alkali Metals

Group 7 = Halogens + Non metal

Question 6

Crude Oil

Answer 6

A mixture of Hydrocarbons

Question 7

Hydrocarbons

Answer 7

Compound that contains hydrogen and carbon only

Question 8

Carbon Monoxide facts

Answer 8

. Colourless gas

. Breathed in and can lead to death

Question 9

Hydrogen for fuel in cars advantages and disadvantages

Answer 9

Advantages
. Releases no CO2 emissions
. Infinite source
Disadvantage 
. Expensive
. Hard to transport and store

Question 10

Earths Early Atmosphere

Answer 10

. Little or no oxygen

. Large amount of CO2

Question 11

Test for oxygen

Answer 11

Glowing Splint

Question 12

Human Activities on the increase of C02

Answer 12

. Driving (CO2)
. Consuming electricity (CO2)
. Landfill Sites (CO2)

Question 13

Evidence of Climate Change

Answer 13

. Sea level rise
. Extreme Weather
. Global Temperature

Question 14

Volcano gas release

Answer 14

. Methane

. Nitrogen

Question 15

Test for C02

Answer 15

Limewater test turns milky or cloudy if CO2 is present

Question 16

Polymer in DNA

Answer 16

Made from 4 different monomers called nucleotides

Question 17

Risks of some nanoparticulate materials

Answer 17

. May be harmful to health

. A lot of effects of nanoparticulate materials are unknown