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WorksheetsY8 - Chemical Formulae
Total questions: 25
Worksheet time: 12mins
What is the symbols of Element - Silver
Cu
Ag
Sl
Na
Which elements are in this compound?
H2O
helium and oxide
hydrogen and oxygen
water
waterium and oxygen
Which elements are in this compound?
CuSO4
cuperium, sodium and oxygen
copper sulfate
copper, sulfur and oxygen
carbon, sodium and oxygen
How many atoms are there in the compound MgCO3?
3
4
5
6
How many atoms of sulfur are in each molecule of H2SO4?
1
4
2
7
What is the correct way to write the formula for the model of this compound?
2H20
2H2O
2HO2
H2O2
Na2CO3 represents
Sodium bicarbonate
Sodium carbonate
Sodium Chloride
Calcium Carbonate
Which chemical formula contains the following elements:
carbon, hydrogen and oxygen?
CH4
Na2SO4
C2H5OH
CO2
How many atoms of iron does iron oxide (Fe2O3) contain?
1
2
3
5
How many atoms of oxygen does copper sulfate (CuSO4) contain?
1
2
3
4
How many atoms of sodium does sodium carbonate (Na2CO3) contain?
1
2
3
5
What is the total number of oxygen atoms in Ca3(PO4)2?
2
4
6
8
40
CaCO3 represents
Sodium bicarbonate
Sodium carbonate
Sodium Chloride
Calcium Carbonate
NaNO3 represents
Sodium Hydroxide
Sodium Chloride
Sodium Nitrite
Sodium Nitrate
Which of the following compound is not an acid?
HCl
H2SO4
HNO3
CH4
The smallest unit of matter which can exist independently is called
an atom
a molecule
a compound
an element
An (a) is a substance made of only one kind of atom.
The properties of a (a) are different from its constituent elements.
(a) is anything that has mass and occupies space.
The abbreviations used to represent elements are called (a)
Zinc reacts with Oxygen to form Zinc Oxide. The properties of Zinc Oxide are most likely -
similar to both Zinc and Oxygen
similar only to Zinc
similar only to Oxygen
different from Zinc or Oxygen
