WorksheetsElements, Compounds & Mixtures
Total questions: 25
Worksheet time: 20mins
Name
Class
Date
1.
A pure substance is matter that has...
a)
definite physical and chemical properties that do not change.
b)
definite chemical properties that do not change.
c)
definite physical properties that do change.
d)
definite chemical and physical properties that do not change.
2.
A pure substance that cannot be separated into simpler substances by chemical or physical means.
a)
Element
b)
Compound
c)
Mixture
d)
Chemical
3.
These contain only one kind of atom.
a)
element
b)
compound
c)
mixture
d)
water
4.
Elements can be broken down into simpler substances.
a)
false
b)
true
c)
sometimes
5.
A compound is made of ________ atoms.
a)
big
b)
similar
c)
different
6.
A molecule can be made of the same kind of atoms.
a)
true
b)
false
c)
Say What??!!!
d)
Dude!! Sweet!!
7.
Carbon Dioxide is a ______
a)
compound
b)
element
c)
mixtures
d)
Battle of Bunker Hill
8.
Salt is a _________.
a)
compound
b)
element
c)
mixture
9.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
10.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
11.
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
12.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
13.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
14.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
15.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
16.
compounds are chemically bonded together
a)
False
b)
true
c)
I don't know?
17.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
18.
Which one can be found on the periodic table?
a)
Compound
b)
Element
19.
a)
1
b)
2
c)
3
d)
4
20.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
21.
Which of the following elements is required in an organic compound?
a)
nitrogen
b)
oxygen
c)
carbon
d)
sodium
22.
The compound CHO is...
a)
inorganic
b)
organic
23.
The compound PO4 is...
a)
inorganic
b)
organic
24.
Which compound is inorganic?
a)
Glucose (C₆H₁₂O₆)
b)
Ethane (C₂H₆)
c)
Carbon Dioxide (CO₂)
d)
Stearic Acid (C₁₈H₃₆O₂)
25.
Which of the following formulas is inorganic?
a)
CHO
b)
CH
c)
SiO
d)
CHCOOH
100 %
