Chemistry Quiz

What happens to atoms during ionic bonding?

• Atoms share electrons.

• Atoms transfer electrons.

• Atoms gain protons.

• Atoms lose neutrons.

What is a covalent bond?

• A bond formed by transferring electrons.

• A bond formed by sharing pairs of electrons.

• A bond formed by losing electrons.

• A bond formed by gaining protons.

What is the charge of a sodium ion (Na⁺)?

• 0

• +1

• -1

• +2

What property of metals allows them to conduct electricity?

• Malleability

• Delocalized electrons

• High melting point

• Strong covalent bonds

Why do most covalent structures not conduct electricity?

• They have delocalised electrons

• They have no free electrons or ions

• They are too dense

• They are too light

Which type of atoms form covalent bonds between them?

• Metals

• Non-metals

• Metalloids

• Noble gases

The structure and bonding of a giant covalent substance is best described as:

• Billions of atoms bonded together by strong covalent bonds

• Atoms bonded by weak ionic bonds

• Atoms bonded by metallic bonds

• Atoms bonded by hydrogen bonds

Why can graphite conduct electricity?

• The delocalised electrons can move through the graphite

• The strong ionic bonds allow electron flow

• The weak covalent bonds allow electron flow

• The delocalised ions can move through the graphite

What is graphene?

• One layer of graphite

• A form of diamond

• A type of metal

• A type of ionic compound