Chem Pre Lesson Assignment

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created 5 years ago by Tan_Wei_Young
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chemistry
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1

Atom

The basic unit of a chemical element

2

Element

Any material that cannot be broken down into more fundamental substances

3

Compound

A substance formed when two or more chemical elements are chemically bonded together

4

Mixture

A combination of two or more pure substances in which each pure substance retains its individual chemical properties.

5

Chemical bond

Any of several forces, especially the ionic bond, covalent bond, and metallic bond, by which atoms or ions are bound in a molecule or crystal.

6

Aqueous

A solution in which the solvent is water

7

Homogenous

Substances and mixtures which are in a single phase

8

Heterogenous

Substances and mixtures which are in a different phases

9

F reezing

The process which a liquid changes into a solid

10

Vaporisation

The process that occurs when a chemical or element is converted from a liquid or a solid to a gas

11

Evaporation

The process which a liquid changes into a gas

12

Condensation

The process by which vapor in the air is changed into liquid

13

Sublimation

The transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase

14

Deposition

The transition of a substance directly from gas to solid phase without passing through the intermediate liquid phase

15

IUPAC

International Union of Pure and Applied Chemistry