Properties of Matter Types of Properties Changes Properties

Properties of Matter Types of Properties & Changes

Properties of Matter (characteristics) A property is a characteristic that describes the substance.

In your Notebook…. . Create a T Chart like this…. . Physical Properties Chemical Properties

Under Physical Properties • A characteristic that can be OBSERVED without changing the COMPOSITION of the substance. Ex: density, ability to dissolve, break (make smaller) • If you can see it. • If you can measure it.

Under Chemical Properties • A characteristic that DESCRIBES how the substance CHANGES into something NEW. Ex: flammable, reactivity • If it is an ability

List the following as Examples Under Physical & Chemical Properties

Blue color

Density

Flammability

Solubility ability to dissolve

Reacts with acid to form H 2

SUPPORTS COMBUSTION

Sour taste

Melting point

Reacts with water to form a gas

Reacts with a base to form water

Hardness

Boiling point

Can neutralize a base

Luster

Odor

In your Notebook…. . Create a T Chart like this…. . Physical Changes Chemical Changes

Under Physical Changes • A change that affects the form of a chemical substance but does not change the chemical composition of that substance. • Ex: Change in state (s, l, g) – Evaporation – Melting – dissolving

Under Chemical Changes • When a substance combines with another to form a new substance , a reaction occurs. • Ex: the identity changes – destruction – new substance

List the following as Examples Under Physical & Chemical Changes

Sodium hydroxide dissolves in water

HCl reacts with potassium hydroxide to produce a salt, water, and heat

A piece of wood is sliced in half

Water is heated and changed into steam

Water freezes and turns to ice

Condensation

Milk sours

Sugar dissolves in water

Wood rotting

Food is digested in the stomach

Some other Properties

Intensive Properties DO NOT depend upon the amount of matter in the sample Ex: Density Color Hardness Malleability Melting Point

Extensive Properties depend upon the amount of matter in the sample Ex: Mass Volume Weight Temperature