Oxygen, hydrogen, and sulphur are examples for _______.

(a)

Metals

(b)

Non-metals

(c)

Metalloids

(d)

Inert gases

The metals which is a liquid at room temperature is _______.

(a)

Chlorine

(b)

Sulphur

(c)

Mercury

(d)

Silver

The smallest unit of an element is _____________

(a)

atom

(b)

molecule

(c)

compound

(d)

none

_________ can be formed by the same or different kinds of atoms.

(a)

Atom

(b)

Molecule

(c)

Gases

(d)

None

A molecule containing three atoms is called a __________ molecule

(a)

monoatomic

(b)

diatomic

(c)

triatomic

(d)

polyatomic

An atom of Oxygen (O) and two atoms of hydrogen (H₂) combine to form a molecule of ____________

(a)

hydrogen

(b)

ozone

(c)

water

(d)

none

Matter is its simplest form is called ______________

(a)

molecule

(b)

Metals

(c)

element

(d)

none

_________ is used for making mobile phones

(a)

Sodium

(b)

Copper

(c)

Gold

(d)

Gallium

_________ is the only non-metal that is liquid at room temperature.

(a)

Graphite

(b)

Carbon

(c)

Diamond

(d)

Bromine

___________ exhibit the properties of metals and non-metals.

(a)

Metalloids

(b)

Copper

(c)

Carbon

(d)

Nickle