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WorksheetsYear 8 Elements and Compounds
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
2.
Which of the following is a good conductor of heat?
a)
Metal
b)
Non-Metal
c)
Metalloid
3.
The name for the table that organises all elements according to it's atomic number is called the:
a)
The Table
b)
The Periodic Table of Elements
c)
The Chemical Table
d)
The Atomic Table
4.
Hydrogen and Oxygen chemically combine to make
a)
water
b)
table salt
c)
vinegar
d)
baking soda
5.
Two or more different substances not chemically combined?
a)
mixture
b)
compound
c)
compound formula
6.
The atomic number represents the number of ___________ found in the nucleus of an atom.
a)
protons
b)
electrons
c)
neutrons
7.
_______________ is everything around us that has mass and takes up space.
a)
Matter
b)
Compound
c)
Element
d)
Pure Substance
8.
Which of the following is an element?
a)
CO
b)
H2O
c)
CO2
d)
H2
9.
The very first element on the periodic table is:
a)
Hydrogen
b)
Oxygen
c)
Sodium
d)
Neon
10.
This is the part of the atom in which the neutrons and protons are located.
a)
orbital
b)
energy level
c)
nucleus
d)
electron cloud
11.
An atom with atomic number 6 would have how many protons?
a)
6
b)
12
c)
3
d)
cannot be determined
12.
What is the chemical symbol for Calcium?
a)
C
b)
Ca
c)
Cm
d)
Ci
13.
Which of the following is NOT a property of metals?
a)
malleable
b)
lustre
c)
brittle
d)
good electrical conductivity
14.
Which of the following is correct?
a)
Proton = positive, neutron = negative, electron = neutral
b)
Proton = positive, neutron = neutral, electron = negative
c)
electron = positive, neutron = neutral, proton = negative
d)
neutron = negative, proton = neutral, electron = positive
15.
What element is Na?
a)
Sodium
b)
Nanium
c)
Silicon
d)
Nastium
16.
He
a)
Metal
b)
Non-metal
17.
Mg
a)
Metal
b)
Non-metal
18.
Kim puts an ice cube in a beaker and it melts. This is a good example of:
a)
a physical change.
b)
a chemical change.
c)
an experiment.
d)
an analysis.
19.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
20.
CO2
a)
carbon dioxide
b)
carbon monoxide
c)
calcium oxide
d)
calcium oxygen
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