WorksheetsChemical Symbols and Formulas
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
What is the chemical formula for Carbon Dioxide?
a)
C6H12O6
b)
CO2
c)
C5Ca15O2
d)
None of the above
2.
The symbol "Cu" is what element?
a)
Copper
b)
Chromium
c)
Cobalt
d)
Carbon
3.
Pure substances that are composed of two or more atoms that are chemically combined are called:
a)
Elements
b)
Compounds
c)
Subscripts
d)
None of the above
4.
Compounds can only be changed into simpler substances called elements by chemical changes
a)
True
b)
False
c)
Kermit has big pawsies
5.
What is the symbol for the element Calcium?
a)
Cl
b)
C
c)
Ca
d)
Cs
6.
Subscripts show how many of each kind of atom and is written to the lower right of the element symbol. If no subscript is written, what does that mean?
a)
Only 1 atom of that element is part of the compound
b)
2 atoms of that element are part of the compound
c)
Kermit has small pawsies
d)
Kitty (Kiki) is a mean cat
7.
How many atoms and are in the chemical formula for water; H₂O (H2O)?
a)
2 atoms for Hydrogen; 1 atom for Oxygen
b)
2 atoms for Hydrogen; 2 atoms for Oxygen
c)
1 atom for Hydrogen; 1 atom for Oxygen
d)
None of the above
8.
The symbol "N" is what element?
a)
Nobelium
b)
Nitrogen
c)
Nihonium
d)
Neptunium
9.
What is the common name for the following chemical formula? Fe2O3
a)
Copper
b)
Aluminium
c)
Rust
d)
None of the above
10.
Which of the following are correct examples of compounds?
a)
water, air, sugar
b)
oxygen, sugar, water
c)
water, salt, air
d)
water, salt, sugar
11.
What are the Symbols for the following elements? O, Al, Fe, He, K
Answers will be in the same order as the symbols above. Ex: H, Ca, Cu (Hydrogen, Calcium, Copper)
Answers will be in the same order as the symbols above. Ex: H, Ca, Cu (Hydrogen, Calcium, Copper)
a)
Oxygen, Gold, Flourine, Helium, Potassium
b)
Oxygen, Aluminum, Iron, Helium, Potassium
c)
Hydrogen, Aluminum, Copper, Helium, Potassium
d)
None of these are correct
12.
What is the chemical formula for Simple Sugar?
a)
Cu5H12O6
b)
C6H12O6
c)
Ca5H15O5
d)
None of the above
13.
Chemical formulas can be used to describe compounds.
a)
True
b)
False
14.
How many atoms are in each of the elements that make up the chemical formula for simple sugar? C6H12O6
a)
Carbon is 2, Hydrogen is 10, Oxygen is 6
b)
They all have 2 atoms to each element
c)
Carbon has 6, Hydrogen has 12, Oxygen has 6
d)
They all have no atoms except Hydrogen and it has 12
15.
What is the symbol for the element Magnesium?
a)
Mo
b)
Mg
c)
Md
d)
Ms
16.
What element is used in swimming pools and what is it's symbol?
a)
Water, H2O
b)
Chlorine, Cl
c)
Oxygen, O
d)
Chlorine, Ch
17.
This is the element that we need to breathe:
The wrong answers still list the symbol correctly for the element listed So look!
The wrong answers still list the symbol correctly for the element listed So look!
a)
Oxygen, O
b)
Carbon Dioxide, CO2
c)
Helium, He
d)
Phosphorus, P
18.
What are the symbols for the following elements: Zinc, Gold, Chlorine, Sodium, Silicon Answers are in the same order as the elements are listed.
a)
Zn, Go, Cl, Na, Ag
b)
Zn, Au, Cl, Na, Si
c)
Zc, Au, Cl, Na, Sl
d)
Zc, Go, Cl, Na, Ag
19.
This chemical formula is named what?
CO2
CO2
a)
Calcium
b)
Simple Sugar
c)
Carbon Dioxide
d)
Oxygen gas
20.
The symbol "H" is what element?
a)
Holmium
b)
Helium
c)
Hydrogen
d)
Hafnium
100 %
