Chem Fall Final

Front

What is the name of the compound Na₂S?

Back

sodium sulfide

Front

What must an Aluminium atom do to achieve stability?

Back

Lose 3 electrons

Front

Which of the following is not a diatomic molecule: Boron, Iodine, Nitrogen, Oxygen?

Back

Boron

Front

What is the molecular shape of H₂O?

Back

bent

Front

What is the ion charge of Sodium?

Back

+1

Front

What is the definition of a diatomic molecule?

Back

A molecule composed of two atoms, which can be of the same or different chemical elements.

Front

What is the electron configuration of Sodium (Na)?

Back

1s² 2s² 2p⁶ 3s¹

Front

What is the significance of the octet rule in chemistry?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the formula for calculating the number of moles in a substance?

Back

Number of moles = mass (g) / molar mass (g/mol)