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INTRODUCTION TO CHEMISTRY ( Form 1 )
Chemistry is a branch of science which deals with the study of the
composition and properties of matter OBJECTIVE By the end of the lesson you should be able to:
Recall scientific concepts related to chemistry learned in primary
INTRODUCTION TO CHEMISTRY ( Form 1 )
Chemistry is a branch of science which deals with the study of the composition and properties of matter
By the end of the lesson you should be able to: Recall scientific concepts related to chemistry learned in primary schools.
REVIEW OF TOPICS LEARNT IN PRIMARY SCHOOL
By the end of this lesson you should be able to relate the knowledge learnt in primary school to what we are going to study in Chemistry.
From Primary school you also learnt that a mixture consists of two or more substances combined. Mixtures can be separated using different methods
CONDUCTORS AND NON CONDUCTORS
Some substances conduct electricity while others do not: A simple electric circuit can be used to test whether a substance is a conductor or non conductor.
A drug is a chemical substance which is introduced into the body to cause a curative or pleasurable effect. Medical drugs are introduced to prevent or cure (treat) diseases or to reduce their symptoms. Some drugs can be prescribed by a qualified doctor and others are not. Those that are prescribed by the doctor are known as prescribed drugs while the others are non-prescribed drugs (also known as Over-the-Counter (OTC) drugs.
The common OTC drugs include painkillers such as aspirin and Paracetemol, anti-acids and a variety of cold and flu remedies. Therefore, the doctor gives the exact amount of the drug to be taken at a specific time. This is then referred to as dosage. Over-dosing or Under-dosing one may lead to serious health problems such as death. Other drugs are commonly abused
COMMONLY ABUSED DRUGS
Drug abuse is the use of a drug for any purpose other than which it is intended. Drugs if abused have different effects. Therefore drug abuse is the use of a drug for a/y purpose other than which it is intended. Drugs if abused have different effects. Our environment consists of materials and substances. All these are produced through various processes. CHEMISTRY AND SOCIETY
At primary school level, we learnt science as a general subject. At secondary level the study of science is split into three main subjects. These are: Physics, Biology and Chemistry.
By the end of the lesson you should be able to appreciate what the study of Chemistry is all about. Chemistry is a branch of science which deals with the study of the composition and properties of matter. In this definition, Composition refers to what a substance is made of. Properties refers to how a substance behaves and how their state changes from one form to another under certain conditions
APPLICATIONS OF CHEMISTRY
Chemistry has contributed to the understanding of our environment through various processes. Various processes are studied.
Past Exam Papers for KCPE and KCSE
We have an enourmous data quiz bank of past papers ranging from 1995 - 2014 .
Quick Revision Booklets
Candidates who would want their papers remarked should request for the same within a month after release of the results. Those who will miss out on their results are advised to check with their respective school heads and not with the examination council. .
Candidate benefit from our quick revision booklets which are comprehensive and how to tackle examination question methods.
e-Content Digital Multimedia
As a supplementary to coursework content our e-library for digitized multimedia CDs while enhance and ensure that you never missed that important concept during the normal class lessons. It is a Do it Yourself Project.
Other Goodies for KCSE ONLINE Members!
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