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WorksheetsChemistry Introduction
Total questions: 10
Worksheet time: 3mins
Name
Class
Date
1.
Water is an element.
a)
true
b)
false
2.
The milk has turned sour.
a)
Chemical Change
b)
Physical Change
3.
An atom's atomic number will tell you how many protons and electrons it has.
a)
True
b)
False
4.
Which sub-atomic particle is responsible for reactions between most atoms?
a)
Proton
b)
Neutron
c)
Electron
d)
None of these
5.
Evidence of a chemical change includes:
a)
Color changes
b)
Temperature changes
c)
Small explosions
d)
All of the above
6.
a charged atom
a)
neutral
b)
isotope
c)
ion
d)
nucleus
7.
same number of protons, different number of neutrons
a)
atomic number
b)
mass number
c)
isotope
d)
ion
8.
Chemistry is a branch of science to study
(I) Interactions between matter
(II) Structure of matter
(III) Composition of matter
(IV) Properties of matter
a)
I, II, and III
b)
I, II, and IV
c)
II, III, and IV
d)
I, II, III, and IV
9.
What holds atoms together in a molecule?
a)
physical bonds
b)
chemical bonds
10.
How do liquid water, ice, and water vapor differ from each other?
a)
They are different states of matter.
b)
They are different compounds.
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