Science 9: Matter and Chemical Change MC1 & MC2 Vocabulary

Particle Theory of Matter

1. All matter is made up of tiny particles

2. Each pure substance has its own kind of particle

3. Particles are attracted to each other

4. Particles are always moving

5. Warmer particles move faster than cold particles

Matter

Anything that has mass and occupies space, chemistry is the study of the properties of matter and the changes that matter undergoes

Pure Substance

A material that contains only one kind or particle

Mixture

A combination of two or more pure substances such that each one’s properties are not lost, but may be hidden

Homogeneous

A mixture in which particles are uniformly scattered; has a uniform compisition

Heterogeneous

A mixture in which the particles are not uniformly scattered; does not have a uniform composition

Element

A pure substance made up of one type of particle, cannot be broken down into simpler substances by means of a chemical change

Compound

Pure substances that are made up of two or more elements chemically combined together; can be broken down into elements again by chemical means

Solution

Mechanical Mixture

Physical Change

Chemical Change

Physical Properties

Chemical Properties

Malleable

Conductivity

Observation

Theory

Law

Model

Antonie Lavoisier

Law of Conservation of Mass

Law of Definite Composition

Electrolysis

John Dalton

J.J. Thomson

Ernest Rutherford

Niels Bohr

De Broglie & Schrodinger

Atomic Nucleus

Proton

Neutron

Electron

Dimitri Mendeleev

Periodic Table

Metal/Non-metal Staircase

Metal

Non-metal

Metalloid

Malleable

Ductile

Chemical Family/Groups

Periods

Alkali metals

Alkaline Earth Metals

Halogens

Noble Gases

Element Symbols

Atomic Mass/Mass Number

Atomic Number

Proton

Neutron

Electron