Grade 8 Science T2 Revision Quiz1

How many electrons can the first and second energy levels accommodate?

• 1,2

• 2,8

• 8,2

• 3,18

The type of bond formed when a metal reacts with a non-metal is known as --------------.

• Metallic bond

• Ionic Bond

• Covalent Bond

• All of the above

A polyatomic ion is an ion that is made up of -------------------.

• one atom

• two atoms only

• more than one atom

• None of the above

Molecular compounds are also known as -------------.

• Ionic compounds

• Metallic Compounds

• Covalent compounds

• Basic atoms

Litmus paper can tell if a solution is acidic, neutral or basic by changing color when placed in a solution. If you test a(n) _____ with litmus paper, it will turn blue

• base

• acid

• salt

• water

Bitter taste – Produces OH- when dissolved in water- feels slippery. These are properties of ----------.

• Acids

• Bases

• Salts

• All of the above

Carbon dioxide is one of the products of the reaction of an acid with ---------.

• a metal

• a non-metal

• carbonates

• None of the above

The --------------- of each element is based on its valence electrons

• Salinity

• Alkalinity

• Reactivity

• Corrosiveness

Electrons involved in bonding between atoms are -------------.

• the inner electrons

• the positively charged protons

• the valence electrons

• the closest to the nucleus

When electrons are shared between two atoms, a(n)-----------bond is formed.

• Covalent

• Ionic

• Metallic

• All of the above