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WorksheetsElements and Compounds Quiz
Total questions: 20
Worksheet time: 18mins
Name
Class
Date
1.
Which of the following is an example of a physical change?
a)
mixing vinegar and baking soda
b)
forming a precipitate
c)
tearing paper into two pieces
d)
rusting metal
2.
When two or more elements are chemically combined this pure substance is formed.
a)
mixture
b)
compound
c)
solution
d)
element
3.
Pure substances that cannot be broken down chemically into simpler substances are known as
a)
Elements
b)
mixture
c)
solution
d)
solids
4.
Which of these would be a physical change?
a)
burning paper
b)
baking cookies
c)
rusting of iron
d)
freezing water
5.
This is an example of a chemical change.
a)
cutting paper
b)
burning gasoline in an engine
c)
boiling water
d)
crushing a can
6.
All elements are composed of _________________________ that cannot be broken down chemically.
a)
minerals
b)
ore
c)
compounds
d)
pure substances
7.
The combination of sand and salt in a bowl is an example of a
a)
mixture.
b)
compound.
c)
formula.
d)
chemical property.
8.
One thing that the periodic table does NOT tell you is
a)
atomic mass.
b)
atomic number.
c)
chemical symbol.
d)
element shape.
9.
Water vapor in the air turns to liquid water in the form of rain. This statement describes an example of a
a)
chemical formula.
b)
chemical change.
c)
chemical equation.
d)
physical change.
10.
One result of a chemical change is
a)
a substance is shaped differently.
b)
one or more new substances.
c)
a substance that is reduced in size.
d)
a substance that can be changed back to the original form.
11.
The majority of elements belong to this category.
a)
metals
b)
nonmetals
c)
minerals
d)
metalloids
12.
On the periodic table, metals and nonmetals are separated by
a)
metalica.
b)
metalloids.
c)
metal properties.
d)
minerals.
13.
Where are nonmetals located on the periodic table?
a)
on the stair step
b)
to the right of the stair step
c)
to the left of the stair step
d)
at the bottom of the periodic table
14.
When two or more liquids are combined in a chemical reaction, sometimes they form a solid. This is known as
a)
a mixture
b)
a precipitate
c)
a compound
d)
a physical reaction
15.
The number that is written lower and smaller in a chemical formula is known as a
a)
subway
b)
substation
c)
subdivision
d)
subscript
16.
A pure substance that is formed by chemically combining two or more elements is known as a______________.
An example of this would be NaCl.
An example of this would be NaCl.
a)
physical reaction
b)
compound
c)
chemical catalyst
d)
subscript
17.
Signs of a chemical change include clues such as
a)
breaking into smaller pieces
b)
change of state of matter
c)
formation of a new substance
d)
melting water
18.
What does a subscript tell you about a formula?
a)
How many elements in formula.
b)
Total count of elements in formula.
c)
How many atoms for element directly in front of subscript.
d)
How many properties in element.
19.
In the following formula, how many TOTAL ATOMS are represented?
C6H12O6
C6H12O6
a)
6
b)
12
c)
14
d)
24
20.
In the following formula, how many TOTAL ELEMENTS are represented?
CoSO4
CoSO4
a)
1
b)
6
c)
3
d)
2
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