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WorksheetsChemistry
Total questions: 22
Worksheet time: 9mins
Name
Class
Date
1.
what is an atom
a)
smallest part of the universe
b)
smallest part of a substance
c)
smallest part of anything
d)
smallest part of water
2.
mass number
a)
number of protons
b)
number of electrons
c)
number of protons and electrons
d)
number of protons and neutrons
3.
atomic symbol
a)
capital letter
b)
lowercase letter
c)
2 capital letters
d)
2 lowercase leters
4.
GOLD
a)
Al
b)
Ag
c)
Ar
d)
Au
5.
CHLORINE
a)
C
b)
Ca
c)
Cl
d)
Cu
6.
CARBON
a)
C
b)
Ca
c)
Cl
d)
Cu
7.
SULFUR
a)
Su
b)
S
c)
Sf
d)
Si
8.
COPPER
a)
C
b)
Ca
c)
Cu
d)
Cl
9.
SILVER
a)
Au
b)
Ag
c)
Al
d)
Ar
10.
SILICON
a)
S
b)
Si
c)
Su
d)
Sc
11.
Which of the following is a pure substance?
a)
O2
b)
Al2CO5
c)
C6H12O6
d)
SiO2
12.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
13.
Which of the following atomic symbols for bromine is written correctly?
a)
bR
b)
BR
c)
Br
d)
br
14.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
15.
What is krypton?
a)
element
b)
compound
c)
mixture
16.
What is water?
a)
element
b)
compound
c)
mixture
17.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
18.
What is the chemical symbol for mercury?
a)
Hg
b)
Mc
c)
My
d)
C
19.
a)
Element
b)
Compound
20.
a)
Element
b)
Compound
21.
found in group one of the periodic table; highly reactive
a)
Non-metals
b)
Transition Metals (Groups 3-12)
c)
alkali metals (group 1)
d)
metalloids (semimetals)
22.
If You Put Sodium In Water What Happens?
a)
Fire
b)
Explosion
c)
Fun
d)
Paint Starts To Dry
e)
Nothing
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