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WorksheetsBasic Chemistry Quiz
Total questions: 15
Worksheet time: 18mins
H2O
is a compound but not a molecule
is only a molecule and not a compound
is a compound and also a molecule
is neither a compound or molecule
O2 Gas
is NOT a molecule because it's just a couple of atoms
is an example of a compound, but not a molecule
is an example of both a compound and a molecule
is an example of a molecule, but not a compound
When is an ionic bond formed?
when electrons are shared
when protons are shared
when oppositely charged ions attract
when oppositely charged ions gain or lose protons
when polar molecules attract
The bond holding the two carbon atoms together is
an ionic bond
a single covalent bond
a double covalent bond
a hydrogen bond
Which is NOT one of the top five elements that makes up most living organisms
Water
How many atoms? How many molecules? How many elements? 5 SiO2
Note: There are 3 numbers that don't apply to any of the 3 categories . Place them in the extra number columns
15
5
2
4
20
3
An atom becomes a cation when it
gains electrons
gains protons
loses electrons
loses electrons or gains protons
protons
nucleus
electrons
electron clouds
neutrons
atoms
Oxygen has an atomic number of
How many different elements are in a molecule of BrO3?
1
2
3
4
Which of these is only a molecule and not a compound?
a
b
c
d
a, c & d
Classify the following substances as:
C
Co
N2
Br2
CO
H2O
