Elements,Compounds,Symbols and Formulae

A substance which has definite composition and consistent properties throughout is called------------

• Impure Substance

• Mixture

• Pure substance

The abbreviations used to represent elements are called ___________

Sulfur

• Sf

• Sr

• S

• Su

Br is the symbol of

• Boron

• Base

• Bromine

• Potassium

N

• Nitrogon

• Notanelement

• Sodium

• Nitrogen

The symbol of Cobalt is

• CO

• Co

• Cb

• CB

Cu stands for

• Carbon

• Copper

• Carbon monoxide

• Cobalt oxide

What is an example of a mixture?

• Table salt
• Salt water
• Oxygen
• Air

Atomic number 10 is

• Ne

• Cr

• Si

• Cl

Choose the option that cannot be a chemical symbol.

• a

• H

• O

• Cl