Question 1

What are moles?

Accepted Answer

A unit for measuring the amount of a substance, since atoms are too small to count normally

(contains  (Avogadro's Number) particles)

Question 2

What is Avagadro's Number?

Accepted Answer

The number of particles (atoms/molecules) in a mole of any substance

(this is constant for every substance; )

Question 3

What is molar mass?

Accepted Answer

The mass of a substance in a single mole of it

Question 4

How do you find the number of moles from the number of particles?

Accepted Answer

Divide the number of particles by Avagadro's Number

Question 5

How do you find the number of particles from the number of moles?

Accepted Answer

Multiply the number of moles by Avagadro's Number

Question 6

How do you find the mass of an element from the number of moles?

Accepted Answer

Find the mass of a single mole of that element (on the periodic table), then multiply that by the number of moles

Question 7

How do you find the number of moles in an element from its mass?

Accepted Answer

Divide the mass by the molar mass of that element (from the periodic table)

Question 8

How do you find the mass of a chemical compound?

Accepted Answer

Multiply the mass of each element by its amount, then add them together

Question 9

How do you do mole equations with compounds instead of elements?

Accepted Answer

First, find the molar mass of the compound, then follow the exact same steps

Moles & Molar Mass, AP Chemistry Flashcards