What is Avogadro's number?

• 6.02 x 10²³

• 1 mole

• 600 million

• 6.02

How is moles abbreviated?

• M

• m

• mol

• ml

What is the SI unit that refers to the number of particles contained in a substance?

The representative particle for gaseous nitrogen is the:

• molecule

• atom

• formula unit

• gram

Tags

NGSS.MS-PS1-1

What is the smallest representative particle of an element?

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

How many atoms of iodine are in a mole of iodine?

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

A mole of Neon contains
6.02 x 10²³ _____.

• atoms
• formula units
• ions
• molecules

Which of the following statements regarding the mole is NOT correct?

• A mole is a counting unit

• Equal to 6.02 x 10²³ particles.

• The concept of mole is similar to the concept of dozen

• none of the above

Why is the mole used in chemistry?

• The mass of atoms is in AMUs which is too hard to convert to grams.

• A dozen is not a scientific amount.

• Chemists needed to make chemistry easier to understand.

• It makes counting large numbers of small particles easier.

Tags

NGSS.HS-PS1-7