Worksheetselements, compounds and mixtures
Total questions: 20
Worksheet time: 40mins
Name
Class
Date
1.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
2.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
3.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
4.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
5.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
6.
_____ small particles that make up most types of matter on Earth.
a)
compounds
b)
atoms
c)
mixtures
d)
elements
7.
In general, metals are _____.
a)
poor conductors of heat
b)
brittle
c)
poor conductors of electricity
d)
good conductors of heat
8.
The air is a _________.
a)
element
b)
mixture
c)
compound
d)
energy
9.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
10.
Which of the following is NOT a characteristic of most metals?
a)
Brittle
b)
Good conductor
c)
Ductile
d)
Malleable
11.
___________________ is a measure of how much solute can dissolve in a given solvent at a given temperature.
a)
Solute
b)
Solvent
c)
Solubility
d)
Solution
12.
A ______________ is the part of a solution that is dissolved by a solvent.
a)
Solution
b)
Solvent
c)
Solute
d)
Solubility
13.
Provides evidence that a chemical reaction has occurred.
a)
dissolving
b)
melting
c)
formation of a gas
d)
bending
14.
Name the separation method that causes wet clothes on a clothes line to dry
a)
Chromatography
b)
Filtration
c)
Distillation
d)
Evaporation
15.
What is the boiling point of water?
a)
0oC
b)
100oC
c)
80oC
d)
95oC
16.
The clear liquid which passes through the filter paper is called
a)
filt
b)
filter
c)
filtrate
d)
filtration
17.
Which one of the following would you use to separate sand from iron filings?
a)
a bar magnet
b)
filter paper
c)
distillation apparatus
d)
chromatography paper
18.
What is the chemical symbol for the element Carbon
a)
Ca
b)
CO2
c)
C
d)
Cd
19.
Name the following compound
MgO
a)
Magnesium dioxide
b)
Mangosium oxide
c)
Magnesium oxide
d)
Dimagnesium oxide
20.
What separation technique would you use to separate black ink into its components?
a)
Water
b)
Sollution
c)
Chromotography
d)
Distillation
100 %
