basic constitution of matter

How many elements are there in the periodic table

• 100

• 25

• 118

• 61

_____are the smallest particles which can exist independently

• atoms

• molecules

• elements

• compound

Molecules with one atom are called _____ molecules

• polyatomic

• diatomic

• monoatomic

• triatomic

The word atom is derived from _______ word

• Spanish

• Latin

• greek

• french

The word atom means?

• something indivisible

• Something invisible

• Something invincible

• Something in multiplicable

In _____ sir Humphrey Davy discovered that when electricity is passed through water it splits into _______ and ______

• 1806-hydrogen and oxygen

• 1806-hydrogen and carbon

• 1999-oxygen and carbon

• 1806-oxygen and carbo

________ are pure substance which cannot be split into simpler components through chemical process

• compund

• molecules

• atoms

• elements