Grade 9 Chemistry Quiz on Bonding and Properties

Select the property(s) of ionic compounds.

• High melting and boiling point

• Soluble in organic solvents

• Good electrical conductivity in aqueous state

• Good electrical conductivity in solid state

Which of the following is a characteristic of giant covalent substances?

• High melting and boiling points

• Soluble in all solvents

• Good conductors of electricity

• Low melting and boiling points

Which of the following describes a compound?

• A pure substance containing two or more elements chemically combined

• A combination of elements that are not chemically bonded

• A pure substance that cannot be broken down

• A mixture of two or more elements

Which of the following is/are true about simple covalent substances?

• They have low melting points.

• They are good conductors of electricity.

• They are generally insoluble in water.

• They form giant structures.

What type of bond is formed when non-metals share electrons?

• Hydrogen bond

• Metallic bond

• Covalent bond

• Ionic bond

Which of the following is a property of ALL metals?

• High melting points

• High density

• Good conductors of heat and electricity

• Brittle and hard

What is the result of the delocalisation of electrons in metals?

• They form covalent bonds.

• They can conduct electricity.

• They become brittle.

• They have low melting points.

Which of the following contains both ionic bonds and covalent bonds?

• ammonia

• ammonium chloride

• hydrogen chloride

• copper(II) chloride

Metal X and non-metal Y react together to form ionic compound X₂Y.

Which statement is correct when this compound is formed?

• Each atom X lose one electron

• Each atom X gain one electron

• Each atom Y lose one electron

• Each atom Y gain one electron

Diamond is hard as a large amount of energy is taken in to break ............ between carbon atoms.