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Science Grade 8
Test Description: Science grade 8
Instructions: Answer all questions to get your test result.
1) What is matter
A
All
B
Takes up space
C
Anything that has mass
D
Occupies volume
2) What are the different types of matter that exist on Earth?
A
None
B
Made up of compounds
C
Made up of one or more chemical elements
D
Made up of atoms
3) What does each element have
A
Unique name
B
All
C
Atomic number with a fixed place on the periodic table
D
Chemical symbol
4) Who created the phrase Atom?
A
Scientits
B
Democritus (460-370 BC)
C
None
D
Democritus
5) How do Atoms differ?
A
They are different in size
B
They are easily visible with the eye
C
All
D
None
6) Was Atoms reintroduced
A
False
B
Maybe
C
No
D
True
7) Who introduced Atoms and when?
A
John Dalton in 1803
B
The world
C
James Dalton
D
None
8) What is another name for elements?
A
Vapour
B
Oxygen
C
Postulates
D
Space
9) Elements are
A
Atoms of a given element are identical
B
Atoms of different elements have different masses
C
indivisible, minute particles called atoms
D
all
10) What is the periodic Table?
A
Represents patterns observed in
B
All
C
Chemical properties of elements
D
None
11) What is the periodic Table?
A
Each element has a fixed position on the table
B
Elements are arranged in order of increasing atomic number
C
None
D
All
12) What is a scientific model
A
None
B
Set of ideas that tells us a story about something in the world
C
The atmosphere
D
The oxygen we breathe
13) Atoms can be seen with the naked eye?
A
True
B
None
C
False
D
All
14) Are all atoms made up of sub-atomic particles
A
True
B
False
C
No
D
Maybe
15) What does sub-atomic mean
A
None
B
Smaller than the atom
C
Divided into
D
Larger than the entire atom
16) The atom is made up of how many different kinds
A
3
B
4
C
1
D
2
17) What are the 3 different kinds within the Atom?
A
Neutron
B
Proton
C
Electron
D
All
18) Define Proton
A
None
B
Deep inside the atom zone called the nucleus which are positively charged
C
They don't form part of the Atom
D
They are not charged on the edge of the atom
19) What does charge mean
A
To represent the property these particles have
B
They are not charged
C
All
D
None
20) Define Neutron
A
All
B
With protons form tightly packed nucleus at the centre of the Atom
C
Particles are neither negatively or positively charged
D
They are neutral
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