1. Physical (Properties and Changes)

Name: ______Date: ______

Science 9 Chemistry

5.2 Properties of Matter

The special characteristics of pure substance that make each one unique are called ______

1.  Physical (Properties and Changes)

A physical property

Any property that can be observed without forming a new substance is a physical property.

These can include: color, texture, lustre, smell, state, melting point, boiling point, hardness, malleability, ductility, crystal shape, viscosity, solubility, density and conductivity (electrical and heat).

1. Intensive: A physical property that will be the same regardless of the amount of matter.

• density: ______

• color: ______

• conductivity: ______

• malleability: ______

• luster: ______

2. Extensive: A physical property that will change if the amount of matter changes.

• mass: ______

• volume: ______

• length: ______

Physical Change-

Change in which the matter's physical appearance is altered, but composition remains unchanged. (Change in state of matter)

v  Three main states of matter are: ______

Ø  Solid is distinguished by a fixed structure. Its shape and volume do not change. In a solid, atoms are tightly packed together in a fixed arrangement.

Ø  Liquid is distinguished by its malleable shape (is able to form into the shape of its container), but constant volume. In a liquid, atoms are close together but not in a fixed arrangement.

Ø  Gas is made up of atoms that are separate. However, unlike solid & liquid, a gas has no fixed shape and volume.

Melting point

______

Boiling point

______

See Table 3 in Page 159 Melting and Boiling points of some Common Substances

Examples of physical properties

§  Malleability- ______

§  Ductility-______

______

§  Solubility- ______

______

§  Thermal conductivity-______

Density- density is a physical property that describes the relationship between mass and volume. is the mass per unit volume of a substance. Lead is very dense, so it makes a good sinker for a fishing line. The following formula can be used:

Example: A piece of aluminum has a mass of 38 g, and a volume of 13.8 cm3
Calculate its density?

Chemical properties:

Any property that describes how a substance reacts with another substance when forming a new substance is a chemical property. Chemical properties include: reaction with acids, ability to burn (combustibility), reaction with water, behaviour in air and reaction to heat, toxicity, and stability.

§  Flammability:______

§  Corrosion: ______

______

§  Reaction with Acid: ______

______