Fundamentals of Chemistry A

Which of the following gases is a monatomic gas? Tick all that apply.

• Oxygen

• Hydrogen

• Chlorine

• Argon

An element in made up of one ________ of atom only.

Finish the definition: A compound is made up of two or more different elements ...

• mixed together.

• chemically joined together.

• joined up.

Which element has the symbol S?

• Sodium

• Sulphur

• Tin

• scandium

Bananas contain potassium. What is the symbol for the element Potassium?

• P

• K

• Ba

• As

Which elements are found in lithium chloride? Tick all that apply.

• Lithium

• carbon

• oxygen

• chlorine

Which elements are found in calcium carbonate? Tick all that apply.

• Calcium

• carbon

• oxygen

• chlorine

How many atoms of each element are found in Na₂O?

• 1 sodium, 2 oxygen atoms

• 2 sodium, 1 oxygen atoms

• 2 sodium, 2 oxygen atoms

• 2 nitrogen, 1 oxygen atoms

How many atoms of each element are found in Ca(OH)₂?

• 1 calcium, 2 oxygen, 1 hydrogen atoms

• 1 calcium, 2 oxygen, 2 hydrogen atoms

• 1 calcium, 1 oxygen, 1 hydrogen atoms

• 2 calcium, 2 oxygen, 2 hydrogen atoms

How many atoms of each element are found in Al₂(SO₄)₃ ?

• 2 aluminium, 2 sulfur, 12 oxygen

• 2 aluminium, 3 sulfur, 12 oxygen

• 2 aluminium, 1 sulfur, 7 oxygen

• 5 Aluminium, 3 sulfur, 7 oxygen