unit b matter and chemical change. changes of states properties of matter classification of...

Organization of Matter

Unit B Matter and Chemical Change

Changes of states Properties of matter Classification of matter

Overview

Melting: A solid changing to a liquid Evaporation: A liquid changing to a gas Freezing: A liquid changing to solid Condensation: A gas changing to a liquid Deposition: a gas changing directly to a

solid. Sublimation: a solid changing directly to a

gas.

Changes in states of matter

Changes of states Properties of matter Classification of matter

What is Matter?

Matter is anything that has mass and occupies space.

What are the three states of matter?

Solid Liquid and Gas

Matter

How can we tell when substances differ from one another?

Properties: are the characteristics that can

be used to describe a substance. Two types: Physical and Chemical

Properties

Physical Properties: property that describes the physical appearance and composition of a substance.

Physical Change: The physical composition stays the same the state or appearance is the only thing that is altered.

Physical Properties

Colour LustreEx Dimond high in lustre and Emerald is low

in lustre

Melting point Boiling point Hardness (pg 99 figure 1.7 Mohs hardness

scale).

List of Physical Properties

MalleabilityEx. Gold DuctilityEx. Copper wire Crystal shape Solubility Density Conductivity

Chemical Properties – describes how a substance behaves when it interacts with another.

Reaction with acid Ability to burn Reaction with water Behavior in air Reaction to heat

Changes of states Properties of matter Classification of matter

Can be either an element or a compound.

Element: cannot be broken down to any simpler substances.

Compound: two or elements combining in a chemical reaction.

Pure Substance

Is a combination of pure substances. In a mixture both substances remain in their

pure form, although they are not always easily identified.

4 types of mixtures Mechanical Mixture Solution Suspension Colloid

Mixture