Worksheets2.3 elements and compounds
Total questions: 12
Worksheet time: 7mins
Name
Class
Date
1.
Which statement best describes an element?
a)
made from mixture
b)
thousands in the world
c)
pure, made of only one atom
d)
can be separated
2.
Which one can be found on the periodic table?
a)
Compound
b)
Element
3.
Water is an example of:
a)
Element
b)
Compound
c)
Solution
4.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
5.
What is krypton?
a)
element
b)
compound
c)
mixture
6.
Compounds can be separated by
a)
Distillation or crystallization
b)
filtration only
c)
heat and electricity
d)
chromatography
7.
The two types of pure substances are
a)
elements and compounds
b)
homogenous and heterogenous
8.
which of the following can be separated physically
a)
elements
b)
compounds
c)
mixtures
9.
The vertical columns of the periodic table are called
a)
periods
b)
groups
10.
The horizontal rows of the periodic table are called
a)
periods
b)
groups
11.
MgCl2 is represented by a
a)
chemical formula
b)
chemical symbol
12.
Chromium (Cr) is represented by
a)
a chemical formula
b)
a chemical symbol
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