Compounds and Chemical Formula

Which two elements are combined in sodium chloride?

Which two elements are combined in hydrogen sulfide??

Which two elements are combined in magnesium oxide?

Which is the correct name for a compound made of calcium and sulfur?

Which elements are combined in calcium nitrate?

i) calcium

ii) nitrogen

iii) nitrate

iv) oxygen

• i and ii only

• i, ii and iv

• i, ii and iii

• i, iii and iv

Which elements are combined in magnesium carbonate?

i) magnesium

ii) carbonate

iii) carbon

iv) oxygen

• i and ii only

• i, ii and iv

• i, ii and iii

• i, iii and iv

Which elements are combined in lithium sulfate?

i) lithium

ii) oxygen

iii) sulfur

iv) sulfate

• i and ii only

• i, ii and iv

• i, ii and iii

• i, iii and iv

Which of the following is an element?

• 
• 
• 
• 

What are the elements in CaO?

How many atoms are there in H₂S?

• 2
• 4
• 1

• 3