PRACTICE Bonding / Nomenclature Test

Front

How many Aluminum atoms are in Al₂O₃?

Back

2

Front

Why do elements bond together?

Back

To become stable

Front

What is the percent by mass of oxygen in MgO?

Back

40%

Front

What is the charge on the calcium ion?

Back

2+

Front

In which compound is the percent composition by mass of Cl equal to 42%?

Back

HClO₃ (gram formula mass = 84 g/mol)

Front

What is the definition of ionic bonding?

Back

Ionic bonding is the electrostatic attraction between oppositely charged ions.

Front

What is the definition of covalent bonding?

Back

Covalent bonding is the sharing of electron pairs between atoms.

Front

What is the formula for calculating percent by mass?

Back

(mass of element in 1 mole of compound / molar mass of compound) x 100%

Front

What is the molar mass of water (H₂O)?

Back

18 g/mol

Front

What is the significance of the octet rule in bonding?

Back

Atoms tend to bond in a way that gives them eight valence electrons, achieving stability.