Chemical Bonding Worksheet

All are correct about ionic bonding, except...

• It is an electrostatic force of attraction between opposite charges.

• It occurs between a metal and a non-metal atoms.

• It involved the loss and gain of electrons.

• It happens when electrons are shared by the atoms.

Which two statements are correct about the figure shown?

• Hydrogen atoms lose electrons and Carbon gains the atoms.

• The valence electrons are shared by both atoms.

• It is a covalent bond.

• It happens on metal and on another non-metal.

Check two general properties of a molecular compound.

• Hard

• Low melting point

• Soft

• poor conductor of electricity when in solid state.

What is a valence electron?

• A type of bond.

• The # of electrons in the last shell.

• The sum of neutrons and protons.

• A popular compound.

What is the formula of Sodium oxide?

• NaO₂

• Na₂O

• Na₂O

• Na₂O₂

At room temperature, most metals are

• an alloy

• liquid

• gas

• solid

When does chemical bond occur?

• when the valence electrons of the atom is complete

• when an electron is transferred into another atom

• when the atom has an equal number of protons and electrons

• when an atom share its electron with another atom

A lone pair is defined as

• A pair of non-bonding electrons

• A pair of bonding electrons

• A pair of electrons on the central atom

• One non-bonding electron

What molecule could this be?

• BF₃

• CO₂

• H₂O

• CH₄

What is the bond angle for this molecule?

• 120

• 107

• 90

• 109.5