WorksheetsScience Quizziz
Total questions: 17
Worksheet time: 3mins
Name
Class
Date
1.
When two or more elements are chemically combined this pure substance is formed.
a)
mixture
b)
compound
c)
solution
d)
element
2.
Pure substances that cannot be broken down chemically into simpler substances are known as
a)
Elements
b)
mixture
c)
solution
d)
solids
3.
Which of these would be a physical change?
a)
burning paper
b)
baking cookies
c)
rusting of iron
d)
freezing water
4.
This is an example of a chemical change.
a)
cutting paper
b)
burning gasoline in an engine
c)
boiling water
d)
crushing a can
5.
All elements are composed of _________________________ that cannot be broken down chemically.
a)
minerals
b)
ore
c)
compounds
d)
pure substances
6.
The combination of sand and salt in a bowl is an example of a
a)
mixture.
b)
compound.
c)
formula.
d)
chemical property.
7.
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.
8.
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.
9.
The majority of elements belong to this category.
a)
metals
b)
nonmetals
c)
minerals
d)
metalloids
10.
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
11.
The number that is written lower and smaller in a chemical formula is known as a
a)
subway
b)
substation
c)
subdivision
d)
subscript
12.
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
13.
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
14.
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.
15.
In the following formula, how many TOTAL ATOMS are represented?
C6H12O6
C6H12O6
a)
6
b)
12
c)
14
d)
24
16.
In the following formula, how many TOTAL ELEMENTS are represented?
CoSO4
CoSO4
a)
1
b)
6
c)
3
d)
2
17.
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)
Hgrusting metal
100 %
