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1st Summer Revision

Total questions: 132

Worksheet time: 1hrs 10mins

Name
Class
Date
1.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
2.

_______ is used to separate a solid from a liquid in which it is suspended.

a)

filtration

b)

distillation

c)

suspension

d)

colloid

3.
Sugar water is a 
a)
solution
b)
suspension
c)
colloid
4.

Contains only one kind of atom.

a)

Element

b)

Compound

c)

Mixture

5.

Contains more than one type of atom held together by a chemical bond.

a)

Element

b)

Compound

c)

Mixture

6.

Examples are diamonds (C) and Uranium (U)

a)

elements

b)

mixtures

c)

compounds

7.

Is sugar (C12H22O11) an element or a compound?

a)

Element

b)

Compound

c)

Mixture

8.
What is H2SO4 
 made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
9.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
10.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
11.
Classify the picture with the correct label.
a)
Mixture of Elements
b)
Mixture of Elements & Compounds
c)
Mixture of Compounds
d)
Compounds
12.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
13.

Water (H2O), is not found on the periodic table because water is a...

a)

atom

b)

liquid

c)

mixture

d)

compound

14.

What is a mixture?

a)

an atom

b)

2 or more substances that are together in the same place, but their atoms are not chemically bonded

c)

a substance that cannot be broken down into any other substances by physical or chemical means

d)

A substance made of 2 or more elements that are chemically

combined in a set ratio

15.

Name the separation technique shown in the diagram.

a)

evaporation

b)

distillation

c)

filtration

16.

How could you separate iron filings from a mixture of iron and sulfur?

a)

Using a magnet

b)

By adding water and filtering

c)

By distillation

17.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

18.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

19.

Ethanol and water have different boiling point. What would be the suitable separation technique for a mixture of both substances?

a)

Distillation

b)

Chromatography paper

c)

Sieving

20.

All matter consists of particles called

a)

Units

b)

Atoms

c)

Cubes

d)

Pints

21.

The modern periodic table is organized by _________________ atomic number.

a)

Increasing

b)

Decreasing

c)

Reducing

d)

Developing

22.

An element is determined by the number of ___________________ (also known as its atomic number).

a)

Neutrons

b)

Electrons

c)

Protons

d)

Wontons

23.

Electrons move around_________________the nucleus

a)

Inside

b)

Outside

c)

On top of

d)

Without

24.

The nucleus of an atom contains protons and_______________

a)

Electrons

b)

Haptons

c)

Neutrons

d)

Wontons

25.

Each neutron has an electrically_________________charge

a)

Positive

b)

Negative

c)

Neutral

d)

Shocking

26.

Each electron has a _________________ electrical charge

a)

Positive

b)

Negative

c)

Neutral

d)

Shocking

27.

Each protons has a _______________ electrical charge

a)

Positive

b)

Negative

c)

Neutral

d)

Shocking

28.

Which of these elements are a Non-Metal?

a)

Copper

b)

Gold

c)

Oxygen

29.

Metals are good conductors of heat, true or false?

a)

True

b)

False

30.

Steel is an example of an

a)

Metal

b)

Non-Metal

c)

Alloy

31.

Non-metals are insulators, this means electricity ______ flow through them.

a)

can

b)

cannot

32.

Non-metals are ___ conductors of heat.

a)

Good

b)

Poor / Bad

33.
Iron rust in the presence of:
a)
Vacuum
b)
Moisture
c)
Oxygen
d)
Moisture and Oxygen
34.

Which diagram shows the most favourable conditions for rust to appear on the nail?

a)

A

b)

B

c)

C

d)

D

35.

Galvanizing is a process of:

a)

Applying a Zinc coating to bare steel

b)

Washing the body with the phosphate coating

c)

dipping a body in E-COAT

d)

Chemically etching primer to steel

36.
A mixture of different metals is known as
a)
Metal mix
b)
cement
c)
Alloy
d)
atom
37.
complete the word equation, Iron + Oxygen goes to
a)
Rust
b)
Iron Oxide
c)
Iron Dioxide
d)
Iron fluoride
38.

The word “luster” refers to which property of matter?

a)

The ability to conduct electrical or thermal energy

b)

Capable of being drawn out into thin wires

c)

The way a surface appears when it reflects light

d)

Suitable for being shaped by beating or rolling

39.

The property of metals by which they can be beaten in to thin sheets is called

a)

Sonority

b)

Malleability

c)

Ductility

d)

None of the above

40.

You need ___________ and _____________

for ENERGY.

a)

Protein

b)

Vitamins and minerals

c)

Fats and carbohydrates

d)

fiber and food

41.
How does calcium help our body?
a)
Builds muscle
b)
Helps eyesight
c)
Develops red blood cells
d)
Builds strong bones
42.
Seafood is a type of protein.
a)
True
b)
False
c)
Maybe
43.
You just had a hard work out and your muscles are sore. Which nutrient should you be trying to get to repair your muscles?
a)
carbohydrates
b)
fat
c)
water
d)
protein
44.
Which of the following are proteins?
a)
Lettuce
b)
Strawberries
c)
Tortillas
d)
Beans and eggs
45.
Water is important:
a)
So you're not thirsty.
b)
For hydration and waste disposal.
c)
To shower in.
d)
To drink. 
46.
This  nutrient helps repair body tissues.
a)
Carbohydrate
b)
Protein
c)
Fats
47.
How does calcium help our body?
a)
Builds muscle
b)
Helps eyesight
c)
Develops red blood cells
d)
Builds strong bones
48.

Which is an example of a dairy product?

a)

meat

b)

bread

c)

watermelon

d)

milk

49.

What Mineral does this food provide?

a)

Iron

b)

Calcium

c)

Sodium

d)

Salt

50.

Children can get this disease from a deficiency of Calcium...

a)

Rickets

b)

Osteoporosis

c)

Dental decay

d)

Brittle bones

51.

The main function of Iron in the diet is:

a)

Strong bones & Teeth

b)

Healthy body

c)

Makes Haemoglobin for Red blood cells

d)

Healthy Brain

52.

Which of the following tests for starch?

a)

Iodine

b)

Benedict's

c)

Biuret

d)

Emulsion

53.

Which of the following tests for protein?

a)

Iodine

b)

Benedicts

c)

Biuret

d)

Emulsion

54.

Which of the following tests for glucose?

a)

Iodine

b)

Benedicts

c)

Biuret

d)

Emulsion

55.

When starch is present iodine turns...

a)

purple

b)

blue-black

c)

orange

d)

brick red

56.

When protein is present Biuret turns...

a)

purple

b)

blue-black

c)

orange

d)

brick red

57.
When large amounts of glucose is present Benedicts turns...
a)
purple
b)
blue-black
c)
brick-red
d)
green
58.

A negative test for starch will cause Iodine to stay...

a)

orange/red

b)

blue

c)

black

d)

brick red

59.

A negative test for protein will cause Biuret to stay...

a)

brick red

b)

blue

c)

black

d)

orange

60.

A negative test for glucose will cause Benedicts to stay...

a)

brick red

b)

blue

c)

black

d)

orange

61.

Which chemicals did you mix to test for proteins - biuret test?

a)

Ethanol and water

b)

Iodine and potassium permanganate

c)

Benedicts Solution

d)

Sodium Hydroxide and Copper Sulphate

62.

This photo represents a

a)

negative test for glucose

b)

negative test for protein

c)

positive test for starch

d)

positive test for glucose

63.
Define the term 'balanced diet'.
a)
A diet containing some nutrients in the correct proportions.
b)
A diet containing most nutrients in the correct proportions.
c)
A diet containing none nutrients in the correct proportions.
d)
A diet containing all nutrients in the correct proportions.
64.

The Doctor advised a patient that according to the type of disease the patient had, she needs a lot of proteins in her body. As a scientist which foods would you advise her to eat?

a)

Water

b)

Vegatables

c)

Eggs and Cereals

d)

Sugar

65.

Grains are a good source of ... .

a)

proteins

b)

carbohydrates

c)

vitamin

d)

fat

66.

A vast area of space within which we find galaxies, stars and solar systems is called the

a)

Earth

b)

World

c)

Universe

d)

Galaxy

67.

The Universe is always

a)

Shrinking

b)

Expanding

c)

Getting darker

d)

Getting brighter

68.

Which astronomer did excellent research on the universe, particularly on black holes?

a)

Marie Curie

b)

Albert Einstein

c)

Isaac Newton

d)

Stephen Hawking

69.

All objects in the Universe are

a)

Moving further away from each other

b)

Moving closer together

c)

Disappearing

d)

Dying

70.

Who's law stated that the galaxies are moving away from each other at a great rate?

a)

Hawking's Law

b)

Hubble's Law

c)

Newton's Law

d)

Einstein's Law

71.

In what year was the Hubbles space telescope launched?

a)

1990

b)

2000

c)

1980

d)

1970

72.

Where is the Hubble space telescope located?

a)

In NASA Headquarters

b)

Mt. Everest

c)

In Space

d)

On the moon

73.

A single point in space that is very very hot, very very dense, and very very small is called the

a)

Starting point

b)

Singularity

c)

Single point

d)

Beginning

74.

What force plays a big part in the formation of the universe?

a)

Magnetic force

b)

Electrical force

c)

Gravitational force

d)

Nuclear force

75.

Large groups of stars form into ______?

a)

Galaxies

b)

Planets

c)

Solar systems

d)

Universes

76.

The collection of planets that orbit a sun, and has other structures within it, such as asteroids, comets and meteors is?

a)

The solar system

b)

The universe

c)

The galaxy

d)

Space

77.

Billions of stars, gas and dust that is held together by gravitational forces is the?

a)

Galaxy

b)

Universe

c)

Solar System

d)

Milkyway

78.

What is energy?

a)

the ability to do work

b)

the movement of electrons

c)

UPS global services

79.

I use electrical energy and convert it to thermal,what am I?

a)

Fortnite

b)

PC

c)

TV

d)

toaster

80.

what is thermal energy?

a)

cool

b)

moving parts

c)

heat

81.

What is sound energy?

a)

my puns

b)

sound waves travailing

c)

vibrations

82.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
83.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
84.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
85.
What machine changes electrical energy into light and sound energy?
a)
battery
b)
lightbulb
c)
alarm clock
d)
apple
86.
Energy that is stored in the nucleus of an atom is called _________ energy.
a)
Chemical
b)
Nuclear
c)
Gravitational
d)
Elastic
87.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

d)

Energy cannot be created or destroyed.

88.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
89.
Where does most of the energy go for this transformation.
a)
heat
b)
electrical
c)
light
d)
joules
90.

Coal and oil are?

a)

Non-Renewable energy resources

b)

Renewable energy resources

c)

None of the above

91.

Which renewable energy resource would be the most ideal for use in the Southern African region?

a)

Hydro (water) energy

b)

Solar energy

c)

Wind energy

d)

Geothermal energy (Earth's heat)

92.

___________ energy comes directly from the sun.

a)

Warm

b)

Solar

c)

Hydro

d)

Bio-fuels

93.

Bio-fuel and geothermal energy are examples of?

a)

Non-renewable energy resources

b)

Hydro energy

c)

Renewable energy resources

d)

None of the above

94.

Renewable energy resources?

a)

Do not release harmful emissions to the atmosphere.

b)

They do not diminish and they are restored naturally.

c)

All the above

95.

What kind of energy is coal?

a)

renewable

b)

non renewable

96.

Sources of energy made from prehistoric plants and animals.

a)

the sun

b)

the wind

c)

fossil fuels

97.

Energy from moving water can be converted into electricity.

a)

True

b)

False

98.

A car engine must have fossil fuels to work.

a)

True

b)

False

99.

To increase the EFFICIENCY of energy use, we could...

a)

Turn off lights when not in use

b)

Keep the car running as you go into the store

c)

Water the plants in a drought

d)

Take a bath instead of a shower

100.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
101.
Example of a decomposer
a)
fungus
b)
mouse
c)
plants
d)
frogs
102.
A tree is a ....
a)
composer
b)
decomposer
c)
producer
103.
What is a producer?
a)
an organism that gets energy from eating other organisms
b)
an organisms that uses sunlight to make its own food
c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)
an organism that uses chemical energy to make its own food
104.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
105.
What is a carnivore?
a)
an animal that gets energy by eating other animals
b)
An animal that gets energy by eating only plants
c)
an animal that gets energy by eating both plants and animals
d)
an animal that makes its own energy through photosynthesis
106.
An animal that gets energy from eating both plants and animals is a 
a)
herbivore
b)
carnivore
c)
omnivore
d)
autotroph
107.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
108.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
109.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
110.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
111.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
112.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
113.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
114.
An area where an organism finds food, shelter and water in a specific arrangement
a)
niche
b)
biosphere
c)
biome
d)
habitat
115.
All of the living and nonliving things in an area that interact with each other are called a/an ______.
a)
community
b)
habitat
c)
population
d)
ecosystem
116.
The study of how living things interact with one another and with their environment.
a)
Biology
b)
Lithology
c)
Ecology
d)
Farmacology
117.

What is the name of the apparatus shown?

a)

Pooter

b)

Beating tray

c)

Line transect

d)

Pitfall trap

118.
What is the function of the instrument shown?
a)
To measure the frequency of plants
b)
To capture small insects
c)
To capture butterflies
d)
To map out a habitat
119.
Earthworm. Is it a...
a)
Producer
b)
Consumer
c)
Decomposer
120.
Members of a species in a defined area
a)
Ecosystem
b)
community
c)
biodiversity
d)
population
121.

The monkey would be a

a)

decomposer

b)

producer

c)

primary consumer

d)

secondary consumer

122.

(a)   are organisms that break down dead plants and animals into materials that go back into the soil.

123.

(a)   are green plants that can make their own food

124.

_______ _______ show a number of interconnecting food chains

(a)  

125.
Frog. Is it a....
a)
Producer
b)
Conusmer
c)
Decomposer
126.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
127.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
128.
Where an organism lives
a)
habitat
b)
niche 
c)
heterotrogh
d)
biosphere
129.
The image provided is an example of a(n):
a)
Carnivore
b)
Herbivore
c)
Producer
d)
Autotroph
130.
Why might some plants have thorns?
a)
to stay safe from animals that want to eat the plant
b)
to attract insects that spread pollen to other plants
c)
to take in nutrients from the air
d)
to provide shade for the plant
131.
Physical adaptations are:
a)
Body parts that help a living thing survive in its environment
b)
Behaviors that help a living thing survive in its environment
132.

Students collected leaf samples. The students used the leaf identification key below to identify a leaf sample.

Based on the identification key, which type of tree is this sample from?

a)

Ginkgo

b)

Honey locust

c)

Horse Chestnut

d)

Black Maple

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