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Revision KS3 year 7

Total questions: 98

Worksheet time: 1hrs 14mins

Name
Class
Date
1.
Which organelle belongs in plant cells only?
a)
Cytoplasm
b)
Mitochondrion
c)
Cell Wall
d)
Nucleus
2.
Which organelle belongs in both plant and animal cells?
a)
Cytoplasm
b)
Chloroplast
c)
Large Central Vacuole
d)
Cell Wall
3.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Mitochondrion
c)
Large Central Vacuole
d)
Cell Wall
4.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Cell Wall
c)
Large Central Vacuole
d)
Cell Membrane
5.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Cell Wall
c)
Large Central Vacuole
d)

Nucleus

6.
A rigid layer that lies outside the cell's  membrane is...
a)
Cytoskeleton
b)
Cilia
c)
Cell Wall
d)
Flagella
7.
What is the job of mitochondria in a cell.
a)
make ribosomes
b)
control the cell
c)
produce energy
d)
make protien
8.
What part of the plant cell represents the cytoplasm?
a)
2
b)
3
c)
6
d)
5
9.
Which part of the diagram controls all cellular activities?
a)
2
b)
3
c)
1
d)
4
10.

What part of the animal cell represents the cell membrane?

a)

5

b)

1

c)

2

d)

4

11.

What part of the plant cell represents the cell wall?

a)

5

b)

3

c)

6

d)

4

12.
Which part on the diagram decides what goes in and out of the cell?
a)
1
b)
2
c)
3
d)
4
13.

When a thin slice from an onion is viewed through a microscope, lots of little box-like shapes are seen. These shapes are most likely

a)

atoms

b)

cells

c)

dust

d)

bubbles

14.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

15.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

16.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

17.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

18.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

19.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

20.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

21.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

22.

Which type of specialized cell keeps moisture in the body and germs out?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

23.

Which type of specialized cell carries oxygen from the lungs all over the body?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

24.

Which type of specialized cell keeps moisture in the body and germs out?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

25.

Which type of specialized cell has many mitochondria and changes size (contracts)?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

26.

Which type of specialized cell protects the body by destroying germs?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

27.

Which type of specialized cell carries electrical signals through the body to the brain?

a)

red blood cells

b)

squamous (skin) cells

c)

muscle cells

d)

white blood cells (macrophages)

e)

nerve cells (neurons)

28.

Which type of specialized cell brings water from the roots to the leaves?

a)

xylem

b)

guard cells

c)

epidermis cells

d)

phloem

e)

root hair cells

29.

Which type of specialized cell opens and closes pores (holes) to let things in and out of the leaf?

a)

xylem

b)

guard cells

c)

epidermis cells

d)

phloem

e)

root hair cells

30.

Which type of specialized cell are waxy and waterproof to protect the plant?

a)

xylem

b)

guard cells

c)

epidermis cells

d)

phloem

e)

root hair cells

31.

Which type of specialized cell sends "food" from photosynthesis through the plant?

a)

xylem

b)

guard cells

c)

epidermis cells

d)

phloem

e)

root hair cells

32.

Which type of specialized cell sticks out into the soil, allowing water into the plant?

a)

xylem

b)

guard cells

c)

epidermis cells

d)

phloem

e)

root hair cells

33.

Red blood cells have a disk-shape with a lot of surface area.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

34.

Guard cells are able to open and close pores in the plant.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

35.

Red blood cells have room to carry more oxygen.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

36.

Guard cells are thin on the outside and thick on the inside.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

37.

Neurons have branches on the end of a long body.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

38.

Neurons create a complex network of the branches of multiple neurons to carry signals.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

39.

Root hair cells have thin walls and stick out.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

40.

Root hair cells easily take in water from soil.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

41.

Muscle cells are long, thin fibers.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

42.

Muscle cells become shorter and thicker when they contract the muscle.

a)

This statement describes a STRUCTURE.

b)

This statement describes a FUNCTION.

43.

Iron objects react with water and oxygen to form hydrated iron oxide

(a)  

44.

Iron objects react with water and oxygen to form hydrated iron oxide

(a)  

45.

Magnesium reacts with oxygen to form magnesium oxide

(a)  

46.

Carbon burns in a good supply of oxygen to form carbon dioxide

(a)  

47.

Carbon burns in a limited supply of oxygen to form Carbon monoxide

(a)  

48.

Hydrochloric acid reacts with magnesium to form magnesium chloride and hydrogen

(a)  

49.

Sodium hydroxide neutralises hydrochloric acid to form sodium chloride and water

(a)  

50.

Sulphur reacts with oxygen to form sulphur oxide

(a)  

51.

Nitric acid reacts with iron to form nitrate and hydrogen

(a)  

52.

Copper carbonate reacts with hydrochloric acid to form copper chloride, water and carbon dioxide

(a)  

53.

Calcium oxide reacts with nitric acid to form calcium nitrate and water

(a)  

54.

Which is the correct definition for an element?

a)

A substance made up of only one type of atom that can be broken down

b)

Two or more substances that are not chemically combined

c)

Two or more different atoms that are chemically combined

d)

A substance made up of only one type of atom that cannot be broken down

55.

C is the correct chemical symbol for which element?

a)

calcium

b)

copper

c)

carbon

d)

caesium

56.

The smallest part of an element is called...

a)

a compound

b)

a mixture

c)

an element

d)

an atom

57.

Which is the correct definition for a compound?

a)

A substance made up of only one type of atom that can be broken down

b)

Two or more substances that are not chemically combined

c)

Two or more different atoms that are chemically combined

d)

A substance made up of only one type of atom that cannot be broken down

58.

What is the missing word? The properties of a compound are __________ the elements it is made up of.

a)

the same as

b)

different to

59.

Which is correct?

a)

iron and sulfur are both metals

b)

iron and sulfur are both non metals

c)

iron is a non metal and sulfur is a metal

d)

iron is a metal and sulfur is a non metal

60.

What is the correct name for CO?

a)

carbon dioxide

b)

carbon monoxide

c)

cobalt

d)

carbon oxide

61.

Which elements are present in H2SO4?

a)

hydrogen and oxygen

b)

hydrogen, oxygen and sodium

c)

hydrogen, oxygen and sulfur

d)

hydrogen, oxygen and silicon

62.

How many atoms of aluminium are there in the chemical formula for aluminium oxide: Al2O3

a)

2

b)

3

c)

5

d)

1

63.

Which element has the chemical symbol Ni?

a)

nitrogen

b)

nickel

c)

sodium

d)

neon

64.

What is the chemical symbol for copper?

a)

C

b)

Co

c)

Cp

d)

Cu

65.

What is the chemical symbol for gold?

a)

Ag

b)

Go

c)

Gu

d)

Au

66.

Is water an element or a compound?

a)

compound

b)

element

67.

How many different elements are there in Mg(OH)2

a)

2

b)

3

c)

4

d)

5

68.

True or false: Hydrogen atoms go around in pairs called molecules

a)

True

b)

False

69.
A 500-gram block of solid cheese is melted in a pot. Which is most likely the mass of the cheese after it is melted?
a)
500 grams, because the cheese does not gain or lose mass just because it was melted
b)
499 grams, because some of the cheese evaporates as it melts
c)
502 grams, because the cheese absorbs heat as it melts
70.
A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?
a)
The mass of the balloon increases because the size of the balloon has increased.
b)
The mass of the balloon increases because the temperature of the balloon has increased.
c)
The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
71.
Jamie weighs a glass of water and observes its weight to be 12 ounces. Jamie then adds 6 ice cubes to the glass of water. Each ice cube weighs one ounce. After all of the ice cubes have melted, what will be theapproximate weight of the glass of water?
a)
6 
b)
12 
c)
18 ounces
72.
A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the mass of the egg?
a)
50 
b)
55 
73.

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B have?

a)

4g

b)

5g

c)

9g

d)

14g

74.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
75.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
76.
If a reaction starts with a total 75g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
77.
In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?
a)
17g
b)
2g
c)
7g
d)
None of the above
78.
12g of Carbon react with 16g of Oxygen, how much carbon monoxide (CO) is formed? 
a)
28 g
b)
4g
c)
30g
d)
12g
79.
24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride
a)
62 
b)
38
c)
24
d)
14
80.

32 g of Oxygen completely reacts with 8 g of Hydrogen to produce _____ g Water

a)

8

b)

12

c)

24

d)

40

81.

4 grams of hydrogen and 32 grams of oxygen will combine to form:

a)

36 grams of water

b)

28 grams of hydroxide

c)

32 grams of oxygen

d)

36 grams of deuterium

82.

In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?

a)

4 grams

b)

6 grams

c)

8 grams

d)

10 grams

83.

Why does this picture demonstrate the Law of Conservation of Mass?

a)

the number of atoms of each element are the same on both sides

b)

they start out separate and end up combined

c)

the same elements are used

d)

it doesn't demonstrate the Law of Conservation of Mass

84.

When a log is burned, what happens to the wood?

a)

The mass stays the same, but becomes smoke and ash.

b)

It disappears.

c)

The mass changes as it goes away.

d)

Nothing. You're imagining things.

85.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
86.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

87.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
88.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
89.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
90.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
91.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
92.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
93.

When an object is moving, friction acts in the _______ direction as the motion.

a)

perpendicular

b)

same

c)

opposite

d)

precise

94.

A type of friction that occurs when air pushes against a moving object it to decelerate.

a)

surface area

b)

air resistance

c)

velocity

d)

gravity

95.
What do we call the forwards force produced by an aeroplane's engine or propeller?
a)
thrust
b)
friction
c)
weight
d)
gravity
96.

A contact force is from

a)

objects physically touching

b)

far apart objects

c)

not touching object

d)

always a pull

97.

The three examples pictured are of

a)

Non-contact Forces

b)

Contact Forces

98.

The force between the phone and the mount is a

a)

contact force

b)

non-contact force

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