Chemical Formulas And Chemical Equations

Question 1

Chemical formula

Answer 1

A chemical formula is used to represent a compound or molecule of a compound. It consists of the symbols of the element in the compound.

Question 2

Hydrogen chloride

Answer 2

HCl

Question 3

Water

Answer 3

H2O

Question 4

Methane

Answer 4

CH4

Question 5

Carbon dioxide

Answer 5

CO2

Question 6

Hydrogen peroxide

Answer 6

H2O2

Question 7

Chloride

Answer 7

Cl

Question 8

Oxide/Dioxide

Answer 8

O

Question 9

Sulfide

Answer 9

S

Question 10

Sulfate

Answer 10

SO

Question 11

Carbonate

Answer 11

CO

Question 12

Hydroxide

Answer 12

OH

Question 13

Reactants

Answer 13

Come first

Chemicals

Question 14

Product

Answer 14

Right side.

Chemical produced in a chemical reaction.

Question 15

Balanced equation

Answer 15

A balanced equation is one in which the total number of atoms of each element on the left side of the equation is equal to to the total number of atoms on the right side of the equation.

Question 16

Chemical symbols

Answer 16

An element is represented by a chemical symbol. A symbol may be used to indicate one atom of an element.
When a symbol is followed by a number, this represents a molecule of that element, e.g. H2 is hydrogen and tells us there are two atoms of hydrogen in a molecule of hydrogen.