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Year 9 Semester Quiz preparation

Total questions: 85

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

Wher is the majority of the mass of an atom located?

a)

In the electron shells

b)

In the Nucleus

c)

In the nucleus and electron shells

2.

What is the charge of electrons?

a)

Positive

b)

Negative

c)

Neutral

d)

Variable

3.

How do electrons fill the orbitals?

a)

Randomly

b)

From higher energy to lower energy orbitals

c)

From lower energy to higher energy orbitals

d)

In no specific order

4.

What is the octet rule?

a)

Atoms have 8 protons in the nucleus

b)

Atoms have 8 neutrons in the nucleus

c)

Atoms have 8 electrons in the outer shell

d)

Atoms have 8 electrons in the nucleus

5.

What do atoms tend to do to achieve stability?

a)

Lose protons

b)

Gain protons

c)

Lose electrons

d)

Gain electrons

6.

What is the maximum number of electrons in a full outer shell?

a)

2

b)

4

c)

6

d)

8

7.

What is the purpose of gaining or losing electrons?

a)

To increase the mass of the atom

b)

To decrease the mass of the atom

c)

To achieve a full outer shell and stability

d)

To change the charge of the nucleus

8.
Carbon has 6 protons. Carbon has an atomic mass of 12. How many neutrons does Carbon have?
a)
12
b)
0
c)
2
d)
6
9.
Fluorine has an atomic number of 9. How many protons does it have?
a)
4
b)
9
c)
12
d)
0
10.
Calcium has an atomic mass of 40 amu. Calcium has 20 protons. How many neutrons does Calcium have?
a)
40
b)
20
c)
0
d)
15
11.

The atomic NUMBER tells you what?

a)

number of electrons

b)

number of protons

c)

number of neutrons

d)

number of protons AND electrons in an element

12.

The atomic MASS tells you what?

a)

number of electrons

b)

number of protons

c)

number of neutrons

d)

the number of protons + neutrons

13.

How many NEUTRONS does Boron have?

a)

11

b)

5

c)

16

d)

6

14.

How many NEUTRONS does Fluorine have?

a)

19

b)

10

c)

9

d)

28

15.

How many ELECTRONS does Beryllium have?

a)

4

b)

9

c)

5

d)

13

16.

How many PROTONS does Fluorine have?

a)

19

b)

10

c)

9

d)

28

17.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

18.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

19.

12 protons and 13 neutrons

a)

Mg-12

b)

Mg-13

c)

Mg-25

d)

Mg-24.305

20.

How do you calculate mass number?

a)

Mass x percent

b)

Protons + Electrons

c)

Protons + Neutrons

d)

Neutrons + Protons + Electrons

21.

ALL atoms of the same element have:

a)

same number of proton

b)

same number of nucleon

c)

different number of neutron

d)

different number of electron

22.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
5
23.
What element is represented in this Bohr Model? 
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
24.
?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
25.
?
a)
Beryllium
b)
Boron
c)
Barium
d)
Bromine
26.
How many electrons does a Copper atom have?
a)
63
b)
29
c)
92
d)
34
27.
?
a)
Helium
b)
Oxygen
c)
Sodium
d)
Phosphorous
28.
A reaction that absorbs heat
a)
Endathermic
b)
Endothermic
c)
Endothermik
d)
Indothermic
29.
A reaction that releases heat 
a)
Exothermic
b)
Ekothermic
c)
Ecothermic
d)
Exofermic
30.

What are the products during this reaction

Metal + Acid--->

a)

Salt (two metals, one a cation and one an anion) + hydrogen

b)

Salt (two metals, one a cation and one an anion) + carbon dioxide

c)

Salt (two metals, two cations) + hydrogen

d)
Metal hydroxide and hydrogen
31.

The combustion of propane can be written by the following chemical equation:

C3H8 + 5O2 → 3CO2 + 4H2O

What are the products in this equation?

a)

C3H8 and 3CO2

b)

3CO2 and 4H2O

c)

C3H8 and 5O2

d)

4H2O and 5O2

32.

What does the law of conservation of mass state?

a)

All atoms will always have exactly the same mass because they are all made from protons, neutrons and electrons.

b)

The mass of the chemicals involved in a chemical reaction must equal 1 kg.

c)

The total mass of the chemicals involved in a chemical reaction is not changed.

d)

Mass within the living world is precious and must be conserved.

33.

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)

The chemical equation shown supports the law of conservation of mass because:

a)

the numbers balance on both sides of the arrow.

b)

there are gases either side of the arrow, which balances the masses.

c)

water is produced from the reaction of two gases therefore producing something heavier.

d)

there are the same number of atoms of each element either side of the arrow.

34.

The reaction between an acid and a metal:

a)

produces a metallic salt only.

b)

produces a salt and hydrogen gas.

c)

produces hydrogen gas only.

d)

produces magnesium chloride and hydrogen.

35.
_P4+_O2 →  _P2O3
a)
3 P4+1 O2 → 2 P2O3
b)
1 P4+1 O2 → 2 P2O3
c)
1 P4+ 3 O2 → 2 P2O3
d)
1 P4+ 2 O2 → 3 P2O3
36.
_Al + _HCl →_H2 + _AlCl3
a)
2 Al + 2 HCl → 2 H2 + 6 AlCl3
b)
3 Al + 3 HCl → 6 H2 + 2 AlCl3
c)
1 Al + 1 HCl → 3 H2 + 1 AlCl3
d)
2 Al + 6 HCl → 3 H2 + 2 AlCl3
37.
_K + _Cl2 →_KCl
a)
2 K + 16 Cl2 → 8 KCl
b)
2 K + 1 Cl2 → 2 KCl
c)
3 K + 4 Cl2 → 3 KCl
d)
1 K + 1 Cl2 →1 KCl
38.
Balance this equation,            Al2O3 ---> Al + O2 
a)
Cannot be balanced
b)
2Al2O3 ---> 2Al + 3O2 
c)
2Al2O3 ---> 4Al + 3O2 
d)
3Al2O3 ---> 2Al + O2 
39.
How many total atoms are represented?         4Al2O3
a)
2
b)
8
c)
5
d)
20
40.

How many Aluminium atoms are represented?         4Al2O3

a)

8

b)

5

c)

11

d)

20

41.

How many Hydrogen atoms are there TOTAL in:
H2SO4

a)

4

b)
5
c)

2

d)
3
42.

How many Oxygen atoms are there TOTAL in:
H2SO4

a)

4

b)
5
c)

2

d)
3
43.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
44.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
45.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
46.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
47.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
48.

During combustion, a fuel reacts with (a)   gas from the air.

49.

All combustion reactions are exothermic, which means they give off (a)   to their surroundings.

50.

Which of the following is an alpha decay particle?

a)

electron

b)

helium nucleus

c)

positron

d)

gamma ray

51.

What type of radioactive decay is this example?

a)

alpha

b)

beta minus

c)

beta plus

d)

gamma

52.

What type of radioactive decay is this example?

a)

alpha

b)

beta minus

c)

beta plus

d)

gamma

53.

What change happens in the nucleus for this radioactive decay example?

a)

loses 2 protons + 2 neutrons

b)

neutron becomes a proton

c)

proton becomes a neutron

d)

no change to nucleus

54.

Which type of radioactive decay has the highest penetrating ability?

a)

alpha

b)

beta

c)

gamma

d)

it is the same for all of them

55.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

56.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
57.

What is the angle of reflection equal to?

a)

The angle of refraction

b)

The angle of incidence

c)

The angle of absorption

d)

The angle of light

58.

What might explain why light travels in a straight line?

a)

If there is nothing to interfere with light waves, they should travel in a straight line.

b)

Light waves will always travel in a straight line, even if they come into contact with another object.

c)

Light waves don't travel in a straight line.

d)

Light waves travel in a straight line because sound waves travel in a straight line.

59.

What is the angle of incidence?

a)

The angle at which light bends in water.

b)

The angle at which light hits a surface.

c)

The angle at which light is absorbed by an object.

d)

The angle at which light bounces off a surface.

60.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
61.
Light bending as it passes through a rain drop is an example of...
a)
Refraction
b)
Reflection
62.

A beam of light bends when it passes from air into water, and more when it passes from water into glass. What can you conclude from this fact?

a)

Air is denser than glass

b)

Water is denser than glass

c)

Glass is denser than water

d)

Air is denser than water

63.

A light ray is incident from water to air. Which of the refracted rays is correct?

a)

A

b)

B

c)

C

d)

D

64.

A ray of light travels from air into a glass block.


Which diagram correctly shows the path of the ray through the glass block?

a)

A

b)

B

c)

C

d)

D

65.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
66.

Loudness of sound depends on

a)

Frequency

b)

Amplitude

c)

Wave length

d)

Velocity

67.

Pitch of a sound depends on

a)

Amplitude

b)

Frequency

c)

Wave length

d)

Velocity

68.

Sound travels in

a)

Air

b)

Water

c)

Gas

d)

All the above

69.

Sound is produced by

a)

Rotation

b)

Vibration

c)

Movement

70.

What property of this wave is represented by the letter "A"

a)

amplitude

b)

crest

c)

trough

d)

wavelength

71.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
72.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
73.

What object would best complete this circuit?

a)

a paper clip

b)

a pen

c)

a battery

d)

piece of plastic

74.

Describe a series circuit.

a)

a circuit that has multiple branches

b)

a circuit that has one path

c)

a circuit that dead ends after a light bulb

75.

Using the diagram provided, identify the wire.

A
B
C
D
E
F
76.

Using the diagram provided, identify the resistor.

A
B
C
D
E
F
77.

Using the diagram provided, identify the battery.

A
B
C
D
E
F
78.

Using the diagram provided, identify the switch.

A
B
C
D
E
F
79.

In a circuit diagram, what does this symbol represent?

a)

battery

b)

filament

c)

bulb

d)

wire

80.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
81.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
82.

Making wires thinner, longer, or hotter ​ (a)   the resistance

Choose from the below words
Increases
Decreases
Insulator
Conductor
High
Low
Resistance
Static Electricity
Postive
Negative
83.

Current is usually the flow of ​ (a)  

Choose from the below words
Electrons
Protons
Postive
Negative
High
Low
Increase
Decrease
Induction
Conduction
84.

acid + base -->

a)

salt + water

b)

salt + oxygen

c)

salt + carbon dioxide

85.

When an acid and a base react, a ______________ reaction takes place.

a)

Displacement

b)

Oxidation

c)

Neutralisation

d)

Transamination

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