Science Grade 8 Question Preview (ID: 42780)
Science Grade 8.
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What is matter
a) Takes up space
b) Anything that has mass
c) Occupies volume
d) All
What are the different types of matter that exist on Earth?
a) Made up of one or more chemical elements
b) Made up of compounds
c) Made up of atoms
d) None
What does each element have
a) Unique name
b) Chemical symbol
c) Atomic number with a fixed place on the periodic table
d) All
Who created the phrase Atom?
a) Democritus (460-370 BC)
b) Scientits
c) Democritus
d) None
How do Atoms differ?
a) They are easily visible with the eye
b) They are different in size
c) None
d) All
Was Atoms reintroduced
a) True
b) False
c) No
d) Maybe
Who introduced Atoms and when?
a) The world
b) John Dalton in 1803
c) James Dalton
d) None
What is another name for elements?
a) Vapour
b) Space
c) Postulates
d) Oxygen
Elements are
a) indivisible, minute particles called atoms
b) Atoms of a given element are identical
c) Atoms of different elements have different masses
d) all
What is the periodic Table?
a) Represents patterns observed in
b) Chemical properties of elements
c) All
d) None
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) All
d) None
What is a scientific model
a) The atmosphere
b) Set of ideas that tells us a story about something in the world
c) The oxygen we breathe
d) None
Atoms can be seen with the naked eye?
a) False
b) True
c) None
d) All
Are all atoms made up of sub-atomic particles
a) False
b) True
c) No
d) Maybe
What does sub-atomic mean
a) Divided into
b) Larger than the entire atom
c) Smaller than the atom
d) None
The atom is made up of how many different kinds
a) 1
b) 2
c) 4
d) 3
What are the 3 different kinds within the Atom?
a) Electron
b) Proton
c) Neutron
d) All
Define Proton
a) Deep inside the atom zone called the nucleus which are positively charged
b) They are not charged on the edge of the atom
c) They don't form part of the Atom
d) None
What does charge mean
a) They are not charged
b) To represent the property these particles have
c) All
d) None
Define Neutron
a) Particles are neither negatively or positively charged
b) They are neutral
c) With protons form tightly packed nucleus at the centre of the Atom
d) All
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