Name: Class:
S2 Core Chemistry
“Naming compounds” homework
Due:
1.
Which of the following compounds contains oxygen?
A Calcium chloride
B Lithium sulphide
C Potassium nitrate
D
Sodium chloride
2.
Calcium carbonate and sodium sulphate are compounds.
Which element is present in both compounds?
A Carbon
B Oxygen
C Sodium
D Sulphur
3.
There are many compounds of sodium.
A sodium carbonate
D sodium nitrate
B sodium
E chloride sodium phosphate
C
F sodium hydroxide sodium sulphate
Identify the compound which is made from two elements.
4.
The names of some calcium compounds are shown in the grid.
A calcium carbonate
D calcium bromide
B calcium iodide
E calcium fluoride
C
F calcium sulphate calcium chloride
Identify the two compounds which contain oxygen.
5.
Magnesium sulphate is a compound present in Epson Salts.
(a) Name the elements present in magnesium sulphate.
(1)
(1)
(1)
(1)
(1)
(b) When drops of barium chloride solution are added to magnesium sulphate a
solid forms and the mixture turns cloudy.
What type of chemical reaction takes place?
(1)

6.
Water from reservoirs needs to be treated before it can be used in the home.
The water is treated in three ways clarification, filtration, disinfection.
During clarification, sodium aluminate is added to the water.
Sodium aluminate contains aluminium and two other elements.
(a) Name the two other elements.
(1)
During disinfection, the element with atomic number 17, is used to kill bacteria.
(b) Name the element which can be used as a disinfectant to kill bacteria.
(1)
7.
In vineyards, strips of copper are covered with the skins of fermented grapes.
The brown copper reacts with chemicals from the grape skins to form green copper ethanoate, which is known as verdigris.
(a) How can you tell that a chemical reaction has taken place?
(b) Copper ethanoate contains copper, carbon and hydrogen.
The ending –ate indicates that another element is also present in this compound.
Name this element.
(1)
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Score: