CHEMISTRY

Introduction

we experience changes in our every day activities as burning candle or paper, boiling water or an egg, cooking food, digestion etc. 

In chemistry, these changes  are classified into two main types that is to say; temporary (physical) changes and permanent (chemical) changes. Temporary changes involve changes in physical properties without forming new substances, and these changes are often reversible. Examples include melting ice and dissolving salt in water. In contrast, permanent changes result in the formation of new substances with different chemical properties, and these changes are typically irreversible. Examples include burning wood and growth. Understanding these distinctions is essential for comprehending the nature of physical and chemical processes in matter. 

ACTIVITY 1. INVESTINGATING THE EFFECT OF HEAT ON CANDLE WAX.

REQUIREMENTS

A small piece of candle, match stick, watch glass.

Procedure

> In your groups place a candle on a watch glass and light it.

> Allow it to burn for 2 minutes  and record your observations.