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WorksheetsElements and Compounds
Total questions: 41
Worksheet time: 41mins
Name
Class
Date
1.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
2.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
3.
Which of the following could be a symbol on the periodic table of elements?
a)
JZ
b)
jz
c)
Jz
d)
JZa
4.
Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
5.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
6.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
7.
Which of the following an element?
a)
Carbonic Acid
b)
Copper
c)
Iron and Copper
d)
Water
8.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
9.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
10.
Is water an element or a compound?
a)
Element
b)
Compound
11.
A compound consists of two or more elements bound together.
a)
True
b)
False
12.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
13.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
14.
Which of the following atomic symbols is written correctly?
a)
OH
b)
oH
c)
fe
d)
H
15.
Which of the following atomic symbols for bromine is written correctly?
a)
bR
b)
BR
c)
Br
d)
br
16.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
17.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
18.
What is krypton?
a)
element
b)
compound
c)
mixture
19.
What is gold?
a)
element
b)
compound
c)
mixture
20.
What is water?
a)
element
b)
compound
c)
mixture
21.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
22.
A pure substance that cannot be separated into simpler substances by chemical or physical means.
a)
Element
b)
Compound
c)
Mixture
d)
Chemical
23.
These contain only one kind of atom.
a)
element
b)
compound
c)
mixture
d)
water
24.
A compound is made of ________ atoms.
a)
big
b)
similar
c)
different
25.
Carbon Dioxide is a ______
a)
compound
b)
element
c)
mixtures
d)
Battle of Bunker Hill
26.
What is Fe?
a)
Boron
b)
Fluorine
c)
Francium
d)
Iron
27.
Elements can be broken down into simpler substances.
a)
false
b)
true
c)
sometimes
28.
A compound is made of ________ atoms.
a)
big
b)
similar
c)
different
29.
A molecule can be made of the same kind of atoms.
a)
true
b)
false
c)
Say What??!!!
d)
Dude!! Sweet!!
30.
Carbon is a(n) ______
a)
compound
b)
element
c)
mixture
31.
Examples are diamonds (C) and Uranium (U)
a)
elements
b)
mixtures
c)
compounds
32.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
33.
What is H2SO4
made up of?
made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
34.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
35.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
36.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Compounds
37.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
38.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
39.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
40.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
41.
The blue numbers in the image below are called ___________.
a)
compounds
b)
coefficients
c)
subscripts
d)
chemical formulas
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