Hydrogen radical is represented by the formula?
H2
H
OH
H2O
Give an example for an element?
Oxygen Molecule
Oxygen atom
Oxygen ion
Oxygen particle
Write the atomic molecule from below?
Na2O3
NaCl
CaCl2
A combination of symbols that represents the elements present in a compound is known as?
Atomicity
Valency
Chemical formula
Chemical symbols
Symbol of gold?
Ag
Hg
Au
Go
Anything that has mass and occupies space is known as?
Atom
Element
Matter
Compound
Symbol of Calcium is represents?
CA
Ca
C
Cal
Write the chemical formula of common salt is?
NH3
HCL
An element is a substance?
With only one kind of atom
Which can be broken down into simpler substance
With two or more elements
Building block of a substance
Elements present in water are?
Hydrogen
Oxygen
Both Hydrogen and Oxygen
Only Hydrogen