4.1 Word list


Add five words with definitions here



Browse the glossary using this index

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A

Atom

The smallest particle of an element that still has the properties of the element.

atomic theory

everthing is made of tiny particles called atoms.

C

chemical change

the arrangement of atoms in compounds changes to form new compounds.

Compound

Something have two or more atom but atom can't be same.

E

e

symbol of electron

electrons

have a negative charge,surrounding the nucleus


element

A pure substance that cannot be broken down into simpler material. Contain only one kind of atom..

I

Ions

an atom with an electrical charge


J

John Dalton

came up with the Atomic Theory (1800’s)

M

magnesium

a kind of element


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