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Paper 2 Random Facts

Total questions: 74

Worksheet time: 37mins

Name
Class
Date
1.

A formulation is

a)

a mixture that has been designed as a useful product.

b)

a compound that has been designed as a useful product.

c)

an element that has been designed as a useful product.

2.

Which of the following are ALL Formulations ...

a)

fuels, cleaning agents, water

b)

paints, medicines, alloys

c)

Carbon dioxide,fertilisers, foods

3.

a pure substance is

a)

a single element

b)

or compound, not mixed with any other substance.

4.

Pure elements and compounds melt and boil

a)

at specific temperature.

b)

at a range of temperatures

5.

Melting point and boiling point data can be used to distinguish pure substances from mixtures because they will be ... [2]

a)

lower

b)

over a larger range

c)

higher

d)

over a short range

6.

In everyday language, a pure substance can mean a ...

a)

..substance that has had nothing added to it, so it is unadulterated and in its natural state, eg pure milk.

b)

100% a substance

7.

Elements and compounds can be detected and identified...

a)

using instrumental methods (method that use computers)

b)

Using flame tests

c)

Using sodium hydroxide

8.

Advantages of Instrumental methods are [3]

a)

accurate

b)

sensitive

c)

rapid

d)

cost efficient

e)

non-scientist can use

9.

Evidence for the early atmosphere is limited

a)

because of the time scale of 4.6 billion years.

b)

because of the time scale of 4.6 million years.

10.

Greenhouse gases in the atmosphere maintain temperatures on Earth high enough to support life. Examples include [3]

a)

water vapour

b)

carbon dioxide

c)

methane

d)

oxygen

e)

nitrogen

11.

In describing the greenhouse effect, after absorbing the suns radiation.....

a)

earth emits long wavelength (infra red/heat radiation)

b)

earth emits short wavelength (infra red/heat radiation)

c)

most long wavelength emits into space

d)

some is absorbed and emitted by greenhouse gases

e)

most short wavelength emits into space

12.

humans have increased carbon dioxide by...

a)

burning fossil fuels

b)

increased transport

c)

planting trees

d)

farming

13.

humans have increased methane levels due to...

a)

increased animal farming

b)

Increased fractional distillation

c)

Increaseed cracking

d)

Increased polymerisation

14.

A problem with evidence for global climate change is

a)

difficult to model such complex systems

b)

Can lead to simplified models,

c)

Can lead to complex models

d)

difficult to model such simplfied systems

15.

A person's carbon footprint is ....

a)

the total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product, service or event.

b)

the total amount of carbon emitted over the full life cycle of a product, service or event.

16.

A person can reduce their carbon footprint by reducing

a)

carbon dioxide

b)

and methane

c)

Nitrogen

d)

hydrocarbon

17.

Carbon dioxide, methane and water causes

a)

global warming

b)

acid rain

c)

global dimming

d)

breathing problems

18.

carbon particulates (soot, Carbon solid) causes...

a)

global dimming

b)

.

19.

sulphur dioxide and nitrogen oxides causes

a)

Acid rain

b)

Toxic

c)

Global warming

d)

Global dimming

20.

carbon monoxide is ...

a)

toxic

b)

Acid rain

c)

Global dimming

d)

Global warming

21.

Water that is safe to drink

a)

Called potable water.

b)

is not pure water in the chemical sense because it contains dissolved substances.

c)

Called buxton

d)

is pure water as it is the safest to drink

22.

In the United Kingdom (UK), Potable water comes from

a)

rain provides water with low levels of dissolved substances (fresh water)

b)

that collects in the ground and in lakes and rivers,

23.

in the UK, most potable water is produced by:

a)

choosing a source of fresh water

b)

passing the water through filter beds

c)

sterilising.

d)

Desalination

e)

Reverse osmosis

24.

Sterilising agents used for potable water include

a)

chlorine

b)

ozone

c)

ultraviolet light

d)

Bleach

e)

oxygen

25.

If supplies of fresh water are limited, desalination of salty water or sea water may be required. [3]

a)

Desalination can be done by distillation

b)

or by processes that use membranes such as reverse osmosis.

c)

requires large amounts of energy.

d)

passing through sand beds

e)

require not much amounts of energy.

26.

Sewage treatment includes: [3]

a)

screening and grit removal & sedimentation to produce sewage sludge and effluent

b)

aerobic digestion of sewage sludge

c)

anaerobic digestion of sewage sludge

d)

aerobic biological treatment of effluent.

e)

anaerobic biological treatment of effluent.

27.

phytomining and bioleaching are better than traditional mining because they don't

a)

digging, moving and disposing of large amounts of rock.

b)

Doesn't use electrolysis

28.

Phytomining uses ... [3]

a)

plants to absorb metal compounds.

b)

the plants are harvested and then burned to produce ash that contains metal compounds.

c)

the metal in the metal compounds are removed using displacement reaction using scrap metal or electrolysis

d)

bacteria to produce leachate solutions that contain metal compounds

e)

metal in the metal compounds are removed using displacement reaction using scrap metal or electrolysis

29.

Corrosion can be prevented

a)

by applying a coating that acts as a barrier, such as greasing, painting or electroplating.

b)

coating with a more reactive metal to provide sacrificial protection

c)

coating with a less reactive metal to provide sacrificial protection

d)

by applying a coating that acts as a barrier, such as seawater and oxygen

30.

Rusting ....[3]

a)

involves both oxygen and water

b)

an example of corrosion.

c)

only happens with iron

d)

happens with all metals

e)

involves both just water

31.

Corrosion is

a)

the destruction of materials by chemical reactions with substances in the environment.

b)

.Rusting

32.

Bronze is an alloy of

a)

copper

b)

tin

c)

zinc

d)

Gold

33.

Brass is an alloy of

a)

copper

b)

zinc

c)

tin

d)

gold

34.

Gold used as jewellery is usually an alloy with

a)

silver

b)

copper

c)

zinc

d)

copper

e)

tin

35.

Gold is sold by carat...

a)

24 carat being 25% (pure gold),

b)

24 carat being 100% (pure gold),

c)

18 carat being 100% gold.

d)

18 carat being 75% gold.

36.

Aluminium alloys are

a)

low density

b)

high density

37.

Most of the glass we use is soda-lime glass, made by heating a mixture of.........

a)

sand, sodium carbonate and limestone.

b)

sand, sodium chloride and limewater.

c)

Small pebbles, sodium and limestone.

d)

Sand, Iron and Bromine.

38.

Borosilicate glass, made from

a)

sand and boron trioxide,

b)

sand and boron dioxide

c)

sand and limestone

d)

sand and sodium carbonate

e)

sand and boron oxide

39.

Clay ceramics, including pottery and bricks, are made by

a)

shaping wet clay

b)

heating clay in a furnace

c)

shaping dry clay

d)

allowing the clay to dry in the sun

40.

The properties of polymers depend on [2]

a)

the monomers

b)

the conditions under which they are made.

c)

the polymer

d)

biodegradable

41.

Low density poly(ethene) LDPE is made by using... [2]

a)

High temp

b)

High pressure

c)

Low temp

d)

Low pressure

e)

catalyst

42.

HIgh density poly(ethene) HDPE is made by using [2]

a)

Low temp

b)

catalyst

c)

High pressure

d)

High temp

e)

low pressure

43.

Thermosoftening polymers melt when they are heated because....[2]

a)

they have no crosslinkers between changes

b)

less energy is required to melt

c)

they have strong intramolecular forces

d)

lots fo energy is required to melt

44.

Thermosetting polymers do not melt when they are heated [2]

a)

Because they have crosslinkers between changes

b)

more energy required to melt

c)

beacause they have weak intermolecular forces

d)

less energy required to break

45.

Most composites are [tick true statments]

a)

usually made of two materials,

b)

have a matrix surrounding

c)

fibres or fragments, which is called the reinforcement.

d)

are expensive

e)

are weaker that the material its is made from.

46.

The chosen conditions of the harbor process is

a)

200 atms, 450 °C, Iron catalyst

b)

60 °C, Nickel catalyst, Hydrogen

c)

Steam and high temperature

d)

high pressure and high temperature

47.

NPK fertilisers can be 1 chemical or a mixture/formulation that conatins the elements ....

a)

nitrogen,

b)

phosphorus

c)

potassium

d)

Krypton

e)

Nickel

48.

Ammonium sulfate is a fertilizer made by reacting [2]

a)

Ammonia

b)

sulfuric acid

c)

Sulfur

d)

Aluiminium

49.

Potassium chloride, potassium sulfate and phosphate rock are obtained by mining, but phosphate rock cannot be used directly as a fertiliser because

a)

Phosphate rock are insoluble salts

b)

Phosphate rock are soluble salts

c)

Expensive

d)

have low masses of ferilizer

50.

In describing the greenhouse effect the radiation emited by the sun and absorbed by the earth is

a)

Short wavelength

b)

Long wavelength

51.

Bioleaching uses ... [2]

a)

plants to absorb metal compounds.

b)

the plants are harvested and then burned to produce ash that contains metal compounds.

c)

the metal in the metal compounds are removed using displacement reaction using scrap metal or electrolysis

d)

bacteria to produce leachate solutions that contain metal compounds

e)

metal in the metal compounds are removed using displacement reaction using scrap metal or electrolysis

52.

High carbon steel is

a)

Strong

b)

Softer

c)

easily shaped

d)

Brittle

53.

Low carbon steel is

a)

Strong

b)

Softer

c)

easily shaped

d)

Brittle

54.

Borosilicate glass is different to soda-lime glass because it...

a)

melts at higher temperatures

b)

melts at lower temperature

55.

Phosphate rock are made soluble by ... [2]

a)

Reacting with nitric acid

b)

Reacting with sulfuric acid

c)

Adding to water

d)

Reacting with sodium hydroxide

56.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

57.

A temperature increase causes the particles ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

58.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

59.
The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?
a)
Red, because the activation energy is larger
b)
Blue, because the activation energy is lower
c)
both reaction progress at the same rate
60.
What does NOT happen when the temperature is increased?
a)
Particles collide more often
b)
Particles collide with more energy
c)
Particles move faster
d)
More particles collide in the correct orientation
61.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of particle collisions

62.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

63.

The ______________is required to break the bonds of the reactants.

a)

Carbonic energy

b)

Activation energy

c)

Plutonic energy

d)

Energi Gaib

64.
Why don't all collisions between particles cause a reaction?
a)
the particles also need to collide with a catalyst
b)
not all the particles collide with enough energy
c)
not all the particles collide at a high enough temperature
d)
the particles need to collide with each other twice
65.
Located on the left side of the reaction
a)
reactants
b)
products
66.
What method can NOT be used to collect gas?
a)
Using a gas syringe
b)
Collecting it in a measuring cylinder under water
c)
Measuring the change in mass
d)
Seeing how quickly the solution goes cloudy
67.
Will increasing the surface area of a catalyst make a difference to the speed of the reaction?
a)
yes
b)
no
68.
What is the disadvantage of using some metal catalysts
a)
expensive
b)
difficult to extract
c)
heavy
d)
toxic
69.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
70.
How does the energy in a reversible reaction in one way compare with the opposite direction?
a)
more energy going forward
b)
more energy going back
c)
the same
d)
no difference
71.

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

a)

larger

b)

smaller

c)

very small

d)

extremely small

72.

The ___________ the surface area of the reactants, the faster the reaction rate.

a)

larger

b)

smaller

c)

colourful

d)

darker

73.

Which is a use for endothermic reactions?

a)

and warmers

b)

injury packs

c)

freezer

d)

kettle

74.

Which is a use for exothermic reactions?

a)

hand warmer

b)

injury packs

c)

freezerkettle

d)

kettle

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