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Year 8 Quiz

Total questions: 76

Worksheet time: 59mins

Name
Class
Date
1.

What is the definition of an element?

a)

A pure substance that cannot be broken down into any simpler substances by chemical methods.

b)

A substance made up of two or more elements chemically joined together.

c)

Two or more substances which are not joined together chemically.

d)

A substance that dissolves in a solvent.

2.

Which of the following is an element?

a)

Oxygen

b)

Carbon Dioxide

c)

Water

d)

Salt

3.

Identify the correct chemical symbol for the element Iron

a)

FE

b)

Fe

c)

Ir

d)

I

4.

Identify the correct chemical symbol of Barium.

a)

Ba

b)

B

c)

ba

d)

Na

5.

What is the name of the element Cl?

a)

Carbon

b)

Chlorine

c)

Calcium

d)

Cadmium

6.

Which is the following is a compound?

a)

Nitrogen

b)

Carbon dioxide

c)

Aluminium

d)

Sodium

7.

A compound has different physical properties to the elements that it is formed from.

a)

True

b)

False

8.

The different elements in a compound are joined together in fixed proportion by mass.

a)

True

b)

False

9.

A compound can be separated into smaller substances using physical methods.

a)

True

b)

False

10.

Which of the following is NOT a difference between a solution and a suspension?

a)

A solution is clear, while a suspension is cloudy.

b)

When left to stand for a while, a solution has particles settling to the bottom, while a suspension does not.

c)

A solution cannot be separated by physical methods, while a suspension cannot be separated by using a filtration method.

d)

Solid particles dissolve completely in a solution, while solid particles do not dissolve at all in a suspension.

11.

Which of the following is NOT a suspension?

a)

Orange Juice

b)

Milk

c)

Salt Solution

d)

Tea

12.

Which of the following is a factor for the solubility of a solid?

a)

Size of Solute

b)

Temperature

c)

Size of Beaker

d)

Rate of Stirring

13.

Which of the following elements makes up the compound sodium chloride?

a)

Nitrogen

b)

Oxygen

c)

Iron

d)

Chlorine

14.

Which of the following is NOT a factor for the rate of dissolving?

a)

Temperature

b)

Rate of Stirring

c)

Surface Area of Solid

d)

Colour of Solid

15.

What is NOT a method to speed up the dissolving of sugar solution?

a)

Stir faster with a spoon

b)

Heat up the sugar solution

c)

Add in bigger pieces of sugar

d)

Add in smaller pieces of sugar

16.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
17.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
18.
Which state of matter has tightly packed molecules?
a)
solid
b)
liquid
c)
gas
19.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
20.
What is happening when my ice cream changes from a solid to a liquid?
a)
freezing
b)
melting
c)
burning
d)
evaporation
21.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position.
b)
have no viscosity.
c)
decrease in volume with increasing temperature.
d)
are free to move around one another but still touch.
22.
The speed of the molecules determines the _____.
a)
volume
b)
density
c)
pressure
d)
temperature
23.
Which has a greater distance between particles?
a)
Solid
b)
Liquid
24.
Which is a property of matter that you CANNOT observe just by looking at an object?
a)
temperature
b)
shape
c)
color
25.
Volume is.....
a)
the weight of an object
b)
the gravity of an object
c)
how much space an object takes up
d)
measured with a balance scale
26.
Mass is
a)
the amount of matter in an object
b)
the shape of an object
c)
measured using l x w x h
d)
the amount of space an object takes up
27.
When particles move from areas of high concentration to areas less concentrated, this has taken place.
a)
diffusion
b)
mitosis
c)
endocytosis
d)
photosynthesis
28.
Which diagram best shows the end result of diffusion?
a)
F
b)
G
c)
H
d)
J
29.
Where is there a high concentration of bbq smoke?
a)
In the bbq pit
b)
In the house
c)
Two streets over
d)
In the atmosphere
30.
Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration
a)
High, low
b)
Low, high
c)
Low, low,
d)
High, high
31.

In which state of matter are the particles the moving the fastest?

a)

solid

b)

liquid

c)

gas

32.

What is the process that turns a solid into a liquid?

a)

melting

b)

freezing

c)

evaporation

d)

condensation

33.

What is the process that turns a gas into a liquid?

a)

melting

b)

freezing

c)

evaporation

d)

condensation

34.

What is the process that turns a liquid into a gas?

a)

melting

b)

freezing

c)

evaporation

d)

condensation

35.

What is the process that turns a liquid into a solid?

a)

melting

b)

freezing

c)

evaporation

d)

condensation

36.

Which process requires that more energy is added to a substance for the change to occur?

a)

melting

b)

freezing

c)

condensation

37.

Which process requires that energy is removed from a substance for the change to occur?

a)

melting

b)

freezing

c)

evaporation

38.

If a liquid turns into a gas, what is happening to the amount of energy in the liquid?

a)

It is decreasing

b)

It stays the same

c)

It is increasing

39.

If a liquid turns into a solid, what is happening to the energy in the liquid?

a)

It is decreasing

b)

It stays the same

c)

It is increasing

40.

What is the solid form of water?

(a)  

41.

At what temperature does ice melt?

a)

0 degrees

b)

10 degrees

c)

100 degrees

42.

What is the process associated with dry ice?

a)

Melting

b)

Freezing

c)

Sublimation

d)

Condensing

43.

How do gases and liquids spread?

(a)  

44.

Draw solid particles

45.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

46.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
47.

What is this subatomic particle that has negative charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Megatron

48.

What is this subatomic particle that has no charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Megatron

49.

What is the smallest particle of an ELEMENT, and it has also all the properties of it?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

50.

What is the small, DENSE REGION consisting of protons and neutrons at the CENTER of an atom?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

51.

It is consisting of two or more atoms combined together in a specific arrangement. It is the smallest particle of compound that can exist independently. What is this?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

52.

Where can we find the location of the Atomic Nucleus?

a)

Center

b)

Left Side

c)

Right Side

d)

Above

53.

What is the atomic model proposed by J.J Thompson, and suggest that negatively-charged electrons were embedded in a kind of cloud or soup of positive charge?

a)

Asia's Next Top Model

b)

Quantum Atomic Model

c)

Plum Pudding Model

d)

Nuclear Model

54.

What is the name of experiment conducted by Ernest Rutherford's Team, in testing the validity of Plum Pudding Model, which then resulted to introducing of the NUCLEAR MODEL of an Atom?

a)

Planetary Model Experiment

b)

Alpha particle scattering Experiment

c)

Paro-Paro G Experiment

d)

Quantum Particle Experiment

55.

A horizontal row of elements in the periodic table

a)

Molecule

b)

Period

c)

Family

d)

Atom

56.

The smallest particle of an element.

a)

Element

b)

Molecule

c)

Atom

57.

A combination of two or more atoms

a)

Period

b)

Molecule

c)

Atom

d)

Family

58.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
59.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
60.

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

a)

Democritus

b)

Thomson

c)

Bohr

d)

Dalton

61.

Proposed that electrons move around the nucleus in specific layers, or shells.

a)

Bohr

b)

Rutherford

c)

Chadwick

d)

Thomson

62.

This picture best represents ___________________ atomic model.

a)

Thomson's

b)

Dalton's

c)

Bohr's

d)

Chadwick's

63.
In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.
a)
Atoms
b)
Parts
c)
Molecules
d)
Hydrogen
64.

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

a)

Atom is mostly empty space

b)

The nucleus is positively charged

c)

The atom has a small dense nucleus

d)

All answers are correct

65.

What does the number in the top left corner represent?

a)

protons

b)

neutrons

66.

What does the number under the symbol represent?

a)

atomic number

b)

atomic mass

c)

electron structure

67.

What number tells us how many electrons would be in a neutral atom?

a)

mass number

b)

atomic number

68.

What are the electrons in the outermost energy level called?

a)

valence electrons

b)

octet electrons

c)

energy levels

69.

What element has this symbol?

a)

kopernium

b)

kadium

c)

potassium

d)

phosphorus

70.

What element has this symbol?

a)

iron

b)

iradium

c)

sodium

d)

iridium

71.

What element has this symbol?

a)

praseodymium

b)

probalt

c)

proentgenium

d)

prohrium

72.

These shaded elements are

a)

metals

b)

nonmetals

c)

metalloids

73.

These shaded elements are

a)

metals

b)

nonmetals

c)

metalloids

74.

These shaded elements are

a)

metals

b)

nonmetals

c)

metalloids

75.

These shaded elements are

a)

inner transition elements

b)

outer transition elements

76.

Who introduced the modern system of element notation?

a)

John Daulton

b)

Jons Berzelius

c)

Robert Boyle

d)

Antoine Lavoisier

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