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. Atoms are the building blocks of matter. A molecule is a group of atoms. H ydrogen. Hydrogen. Hydrogen C arbon. Hydrogen Carbon. Li thium. Lithium. Lithium Ti tanium. Lithium Titanium. Au for G old. Au for Gold Ag for s ilver.

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.

Atoms are the building blocks of matter.

A molecule is a group of atoms.


Hydrogen



Hydrogen

Carbon


Hydrogen

Carbon


Lithium



Lithium

Titanium


Lithium

Titanium


Au for Gold


Au for Gold

Ag for silver


A number following the element refers to the quantity of those atoms.

The number comes after the element.

For example, H2O means two hydrogens and one Oxygen, H2O4S means two hydrogens, four oxygens and one sulphur

The order in which the elements are written usually follows the rule developed by Edwin Hill in 1900. According to this rule, when you have Carbon it goes first, Hydrogen is second and the rest are in alphabetical order.


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

H

Ag

Au


C those atoms.

Li

Ti

Ag

H

Au


C those atoms.

Li

Ti

Ag

H

Au


C those atoms.

Li

Ti

H

Ag

Au


Li those atoms.

Ti

C

H

Ag

Au


Li those atoms.

C

H

Ti

Ag

Au


Li those atoms.

Ti

C

H

Ag

Au


Li those atoms.

Ti

C

H

Ag

Au


Li those atoms.

Ti

C

H

Ag

Au


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