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Worksheets

8 Chemistry

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.
The molecules in the picture are tightly held together with little movement. They have shape and energy.  Therefore, the picture represents _________.
a)
solid
b)
liquid
c)
gas
d)
plasma
2.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
3.
What is the chemical symbol for the element hydrogen
a)
H
b)
He
c)
h
d)
he
4.
Which is an example of a physical change?
a)
sodium and chlorine form salt
b)
a copper ring turns white and green
c)
a log burns in a fire
d)
using sand and water to build a sand castle on a beach
5.
Which of the following is a chemical change?
a)
the rusting of iron
b)
dissolving salt in water
c)
melting an ice cube
d)
bending a copper wire
6.
What is the chemical symbol for the element Silicon
a)
S
b)
Si
c)
si
d)
Sl
7.
What is the chemical symbol for the element copper?
a)
co
b)
c
c)
Cu
d)
cu
8.
What is the chemical symbol for the element Nitrogen
a)
Ni
b)
N
c)
No
d)
Nb
9.
What is the chemical symbol for the element Chlorine
a)
C
b)
Cl
c)
cl
d)
Ch
10.
What element is represented by the Chemical symbol Mg
a)
Manganese
b)
Magnesium
c)
Molybdenum
d)
Mitrium
11.
What is the chemical symbol for the element Calcium
a)
C
b)
Ca
c)
Cl
d)
CL
12.
What is the chemical symbol for the element Sodium
a)
Na
b)
So
c)
S
d)
Sd
13.

An elements is

a)

a substance that cannot be split into simpler substances

b)

a substance that can be split into simpler substances

14.

A molecule is

a)

a singular particle of a particular element

b)

another name for an element

c)

2 or more atoms that are combined

15.

Signs of a chemical change include;

a)

change of colour, change of temperature, precipitate (solid) formed, gas released.

b)

change of colour, reversing back to original form, precipitate (solid) formed, gas released.

16.
Which group of elements will NOT react with other elements?
a)
Metals
b)
Metalloids
c)
Non-metals
d)
Noble gases
17.
What is the smallest part of an element?
a)
Molecule
b)
Atom
c)
Mixture
d)
Compound
18.
Elements on the Period Table are classified into categories such as 
a)
Rocks and minerals
b)
Metals and Non-Metals 
c)
Molecules and Atoms
d)
Mixtures and Compounds
19.
Noble gas is classified as a...
a)
Compound
b)
Element 
c)
Mixture
20.

atomic symbol

a)

capital letter

b)

lowercase letter

c)

2 capital letters

d)

2 lowercase leters

21.
What is a pure substance that cannot be broken down into any other substance by physical or chemical means. Ex: Gold, Silver, Oxygen, & Nitrogen
a)
element
b)
compound
c)
mixture
d)
salad
22.

Signs of a chemical change include;

a)

change of colour, change of temperature, precipitate (solid) formed, gas released.

b)

change of colour, reversing back to original form, precipitate (solid) formed, gas released.

23.

Water is the product of the reactants:

a)

oxygen and water

b)

oxygen and carbon

c)

hydrogen and oxygen

24.

Who devised the Periodic Table?

a)

Newton

b)

Mendel

c)

Einstein

d)

Mendeleev

25.

The symbol for Mercury is

a)

HG

b)

My

c)

Mg

d)

Hg

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