Thursday, January 22, 2009

IS MATTER AROUND US PURE part 1

Question (pg 15)
1. What is meant by a pure substance?
A pure substance is a substance which consists of a single type of particles.

1. Differentiate between homogenous and heterogenous mixtures with examples.


Homogenous

Heterogenous

1. It has a uniform composition throughout its mass.

It does not have a uniformorm composition throughout the mass

2. It has no visible boundaries of separation between the various constituents

It has visible boundaries of separation between the various constituents

3. eg – Sugar solution

eg – Mixture of sugar and sand

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