The relative atomic mass is the average mass of an atom compared to 

• the mass of a carbon-12 atom.
• 1/12 the mass of a carbon-12 atom
• the mass of a hydrogen atom
• 1/12 the mass of a hydrogen atom

The relative molecular mass of a compound is equal to the sum of its

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

What is the relative molecular mass of fluorine gas, F₂?

• 19
• 38
• 9
• 18

Find Molecular Mass: Calculate the mass of one mole of CO₂ (carbon dioxide).

• 18.0 grams

• 44.0 grams

• 14.0 grams

• 180.0 grams

What is the unit of relative molecular mass?

• kilogram
• gram
• gram per mole (g/mol)
• no units

If an atom gains an electron to become an ion, it is a(n)....

• cation
• anion
• noble gas
• metal

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the formula for Sodium Nitrate?

• NaN

• NaN₂

• Na(NO₃)₂

• NaNO₃

• SN

Tags

NGSS.MS-PS1-1

If copper(II) and phosphate bond together, the formula would be:

• Cu₂(PO₄)₃

• CuPO₄

• Cu₃(PO₄)₂

• Cu₃PO₄

The proper formula for magnesium hydroxide:

• MgOH
• Mg₂OH
• Mg(OH)₂
• Mg₂OH₂

Name this ion: NH₄⁺

• ammonia

• ammonium

• nitrate

• nitride