Atoms, periodic table, and bonding

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.

Front

What is the charge of an aluminum ion?

Back

The charge of an aluminum ion is 3+.

Front

What is the charge of an oxide ion?

Back

The charge of an oxide ion is 2-.

Front

What is the chemical formula for the compound formed by aluminum ions and oxide ions?

Back

The chemical formula is Al2O3.

Front

What does the atomic number of an element represent?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

Which element has an atomic number of 11?

Back

Sodium (Na) has an atomic number of 11.

Front

What is the significance of an element's group/family in the periodic table?

Back

Elements in the same group/family have similar chemical properties and reactivity.

Front

Which element is most likely to have similar chemical reactivity as sodium?

Back

Potassium (K) is most likely to have similar chemical reactivity as sodium.

Front

What is the most common charge for oxygen when it forms an ion?

Back

Oxygen commonly forms an ion with a charge of 2-.

Front

Which atom would bond with magnesium in a 1:1 ratio?

Back

Oxygen would bond with magnesium in a 1:1 ratio.