Chemistry Holiday Homework

What is the Latin name of Mercury

• Stibium

• Aurum

• Hydrargyrum

• Argentum

An atom or a group of atoms containing a positive or negative charge is known as

What is the molecular formula of Hydrogen Sulphate

• H₂S

• H₂SO₄

• HCl

What is the symbol of Silver

• Zn

• Xe

• U

• Ag

Elements which have more than one valency are said to have

The process of separating the components of a mixture is called

Most of the known elements are

• Metals

• Metalloids

• Non-Metals

• Noble gases

A device which is used to separate two immiscible liquid is known as

Which of the following methods is used to separate bran from flour

• handpicking

• evaporation

• sieving

• distillation

Which of the following is an example of a solid-liquid mixture

• chalk and petrol

• salt and water

• rice and water

• all of these