WorksheetsYr 8 Chemistry
Total questions: 10
Worksheet time: 5mins
Salt is a combination of one sodium atom and one chlorine atom. Its formula, in symbols, would be
S C
So Cl
Ga Ge
Na Cl
Because elements are organised into like groups on the periodic table, calcium is most like
magnesium
carbon
chlorine
uranium
Which two elements are most likely to be similar in properties?
magnesium and manganese
calcium and chlorine
argon and krypton
potassium and calcium
The element with the atomic number of 16 is
oxygen
sulfur
phosphorus
antimony
The element with the atomic mass of 16 is
O
S
P
Sb
Two atoms of hydrogen and one atom of oxygen make a molecule of
air
water
wood
fire
If you have 1kilogram of each of the following, which is heavier?
Na
Cu
Au
Pb
All weigh 1 kg.
A molecule of hydrochloric acid is HCl, how many elements is it made up of?
1
2
3
4
Bright advertising lights are called neon lights, they contain
a metal filament
a vacuum
nitrogen
neon
Aluminium is
a metal
an element
light weight
strong
