True or False -- If two substances have the same number of particles, they ALWAYS have the same mass.

• True

• False

True or False --

If two substances have the same number of moles, they ALWAYS have the same mass.

• True

• False

Tags

NGSS.HS-PS1-7

True or False --

If two substances have the same number of particles, they ALWAYS have the same number of moles.

• True

• False

Which represents more particles -- 1 mole of H2O or 1 g of H2O?

• 1 mole

• 1 g

• they are the same

• 1 mole

• they are the same

Tags

NGSS.HS-PS1-7

Which has a greater mass - 5 moles of water or 5 moles of table salt (NaCl)?

• water

• NaCl

• they are the same

Which represents a greater mass -- 1 mole of H2O or 1 g of H2O?

• 1 mole

• 1 g

• they are the same

Tags

NGSS.HS-PS1-7

What mass of copper would have the same number of atoms as 26.98 grams of aluminum?

• 26.98 g

• 63.55 g

• no way to know

Tags

NGSS.HS-PS1-7

Which has more particles -- 26.98 g of Al or 18.02 g of H2O?

• 26.98 g Al

• 18.02 g H2O

• they are the same

Tags

NGSS.HS-PS1-7

Which has a greater mass - 5 atoms of iron (Fe) or 5 moles of iron (Fe)?

• 5 atoms

• 5 moles

• they are the same