Chem Mid/Final

Which of the following is diatomic molecule ?

• P4

• H2

• S8

• Na

Which of the following is the strongest bond ?

• Single Bond

• Triple bond

• Double bond

• molecular Bond

A _________________forms when parallel orbitals overlap and share electrons.

• pi bond

• Metallic bond

• sigma bond

• Ionic bond

How many electrons do group 16 elements need to form an octet?

• 1

• 2

• 3

• 8

Valence electron sharing allows atoms to acquire the stable electron configuration of

• Noble gas

• Oxygen gas

• Alkali metal

• Halogens

The following equation represent:

aluminum(s) + bromine(l) → aluminum bromide(s)

• Balanced equation

• Skeleton equation

• Word equation

• Combustion equation

in the following equation

2NaOH + CaBr2 → Ca(OH)2 + NaBr

• NaOH and CaBr2

• NaOH and NaBr

• NaOH and Ca(OH)2

• Ca(OH)2 and NaBr

The equation that lack information about the number of atoms involved is called

• Balanced equation

• Skeleton equation

• Word equation

• B and C

The starting material in chemical equation is called:

• Reactants

• products

• Solids

• Formed material

The sign in -------> chemical equation represent:

• Reactants

• products

• State of matter

• reversable reaction