Mole Quiz

"The Mole" Module

Visionlearning - an interactive practice exercise.

(1) The mole is also referred to as:

	(a) Avogadro's number
	(b) Bohr's number
	(c) Cannizzaro's number
	(d) Loschmidt's number

(2) What number does the mole represent?

	(a) 12
	(b) 6 x 10²²
	(c) 6.02 x 10²³
	(d) 60.2 x 10²³

(3) The concept of the mole says that:

	(a) in a defined mass of an element there is a precise number of atoms
	(b) in a defined mass of an element there is a precise number of compounds
	(c) in the atomic weight of an element there is one atom
	(d) none of the choices

(4) How many silicon atoms are there in 28.09 g of Si?

	(a) 1
	(b) 1.204 x 10²⁴
	(c) 28.01
	(d) 6.02 x 10²³

(5) How do you calculate the molecular weight of a compound?

	(a) by dividing the weight of atoms of the compound
	(b) by multiplying the weight of atoms of the compound
	(c) by subtracting the weight of atoms of the compound
	(d) by summing the atomic weights of elements in that compound

(6) What is the molecular weight of CO₂?

	(a) 28.01
	(b) 32.00
	(c) 44.01
	(d) 72.08

(7) Which one of the following has the same number of moles as 28.02 g of nitrogen?

	(a) 19 g of potassium
	(b) 23.0 g of potassium
	(c) 24.01 g of magnesium
	(d) 36.02 g of water

External Resources

• Periodic Table of the Elements Poster, 34" x 24"

• The mole concept in chemistry (Selected topics in modern chemistry)

• Other Recommended Products

Visionlearning Resources

Glossary

Quotes

The first hypothesis to present ... is the supposition that the number of integral molecules in any gases is always the same for equal volumes, or always proportional to the volumes.

- Amadeo Avogadro 1776-1856

What did Avogadro put in his hot chocolate? Marsh-mole-ows!

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