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Worksheetsmatter (part 2)
Total questions: 18
Worksheet time: 14mins
Name
Class
Date
1.
Pure oxygen (O) is an example of...
a)
an element
b)
a mixture
c)
a compound
2.
An example of ...
a)
A mixture
b)
A compound
c)
An element
3.
Salad is an example of...
a)
a mixutre
b)
an element
c)
a compound
4.
What is the term for combining 2 or more DIFFERENT atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
5.
In rust (Fe2O3) how many oxygen atoms are there?
a)
1
b)
2
c)
3
d)
5
6.
In rust (Fe2O3) how many iron atoms are there?
a)
1
b)
2
c)
3
d)
5
7.
This model represents what chemical formula?
a)
N4H
b)
NH
c)
N2H2
d)
NH4
8.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
9.
Which of the following lists only elements?
a)
H2O, MgCl2, NaOH
b)
K, Na, NaCl
c)
KCl, Ag, Au
d)
O2, Cl2, N2
10.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
11.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
12.
What are the three states of matter?
a)
Rock, Brick, Shoe
b)
Solid, Liquid, Gas
c)
Liquid, Water, Soda
d)
Rain, Sleet, Snow
13.
The following chemical formula contains how many different elements?
a)
1
b)
2
c)
3
14.
Name all the elements present in the following formula. You may select more than one correct answer.
a)
Carbon
b)
Calcium
c)
Iron
d)
Oxygen
15.
How many atoms of nitrogen are present in the chemical formula:
a)
8
b)
10
c)
4
d)
2
16.
Which part of an atom has a negative charge?
a)
Proton
b)
Neutron
c)
Electron
17.
Which part of an atom has a positive charge?
a)
Proton
b)
Neutron
c)
Electron
18.
Which part of an atom has a neutral charge?
a)
Proton
b)
Neutron
c)
Electron
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