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WorksheetsChemistry for Life Science
Total questions: 15
Worksheet time: 20mins
The smallest particle that makes up matter.
Atoms
Elements
Molecules
Compounds
How many elements are in C6H12O6?
1
2
3
6
How many Hydrogen atoms are present in H20?
2
4
1
0
What is the total number of nitrogen (N) atoms in an ammonia (NH3) molecule?
1
2
3
4
How many atoms of carbon (C) are in CaCO3?
3
4
1
6
How many atoms of hydrogen are in H3?
1
0
2
3
How many atoms of calcium (Ca) are in CaCO3?
3
4
1
6
How many atoms of oxygen (O) are in CaCO3?
3
4
1
6
In the equation shown, what are the reactant(s)?
N2 + H2
NH3
In the equation shown, what are the product(s)?
N2 + H2
NH3
How many molecules of aluminum (Al) are there in the following equation: 4Al + 3O2 --> 2Al2 O3
2
6
1
4
How many molecules of oxygen gas (O2) are there in the following equation: 4Al + 3O2 --> 2Al2 O3
3
6
1
4
How many molecules of CaCO3 are in this equation?
CaCO3 → CaO + CO2?
3
1
2
