Changes are constanly occurring around us and within us,many changes occur in the environment-in the air,natural waters,land,and in organisms that thrive there.sometimes matter changes on its own likf when plants decay or a piece of iron gets rusty.

The biosphere is made up of all living things and their habitat. Life is usually confined to the atmospher,the land surface,the top layer of the soil,and the upper layers of the oceans, lakes and rivers. The existence of life in the upper atm0sphere depends on the supply of water as well as carbon dioxide. Few living things are found above 3 200…[Read more]

The biosphere is made up of all living things and their habitat. Life is usually confined to the atmospher,the land surface,the top layer of the soil,and the upper layers of the oceans, lakes and rivers. The existence of life in the upper atm0sphere depends on the supply of water as well as carbon dioxide.

Perhaps,you think of salt as the one you use for seasoning food,sodium chloride or table salt. The term salts includes all comrounds of metals and nonmetals. A simple salt is formed when a metal combines with one or more nonmetals. Oxygen is usually the second nonmel. Hence.they are called oxysalts. Double salts are formed when two or more metals…[Read more]

Compounds may be classified based on the presence of the element caraon. There is a a very large group of compounds containing the element carbon that possess a unique set of properties. They number in milli0ns but it is convenient to study them as a group.some are naturally occurring and and mostly present in living organisms or are of living…[Read more]

Compounds may be classified based on the presence of the element caraon. There is a a very large group of compounds containing the element carbon that possess a unique set of properties. They number in milli0ns but it is convenient to study them as a group.some are naturally occurring and and mostly present in living organisms or are of living…[Read more]

Compounds may be classified based on the presence of the element caraon. There is a a very large group of compounds containing the element carbon that possess a unique set of properties. They number in milli0ns but it is convenient to study them as a group.some are naturally occurring and and mostly present in living organisms or are of living origin.

This unit has introduced you to chemistry. You got a picture of what its study entails,the discipline of the mind needed to make scientific studies,the skills required in employing the scientific method,and the importance of measurements in science. As you go on with you study using this textbook,you will learn more about chemistry. What you…[Read more]

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chemistry is about the things we need and use in our daily lives-air,water,food,clothing,medicine,dwelling,telecommunication,transportation,fuel,etc.our culure and our environment are somehow shaped by the development of our knowlege of science.chemistry particularly,has made significant contributions to society.