Let us observe several examples of matter and find out how they differ. We may first classify them according to two general categories-homogeneous or heterogeneous. This classification is based on easily observable properties.so as not to get confused,try to rememenber the origin of each term. The term homogenous comes from homo ( the same) and…[Read more]

Let us observe several examples of matter and find out how they differ. We may first classify them according to two general categories-homogeneous or heterogeneous. This classification is based on easily observable properties.so as not to get confused,try to rememenber the origin of each term. The term homogenous comes from homo ( the same) and…[Read more]

Let us observe several examples of matter and find out how they differ. We may first classify them according to two general categories-homogeneous or heterogeneous. This classification is based on easily observable properties.so as not to get confused,trx to rememenber the origin of each term. The term homogenous comes from homo ( the same) and…[Read more]

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. These are properties that are permanent or that depend on the kind of substance itself. For example, we kn0w that pure water is c0l0rless and is a liquid at room temperature; does n0t burn,freezes at 0’c, and boils at 100’C at sea level. Carbon dioxide is a colorless ,odorless gas at room temperature and does not burn. Ethanol, the common…[Read more]

Any material under study is called a system. Chemists in general are interested in the study of chemical or material systems. When we study a chemical system,we first observe and describe its properties. If we want to group different kinds of matter,we should lo0k for similarities and differences in their instrinsic properties. These are…[Read more]

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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]

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.

There is no single method by which scientists solve problems.different people seek solutions to a certain problem in different ways.though some scientists fail to find the solution to a certain problem,they sometimes discover something else of value by chance or serendipity.the word serendipity came from the story the princess of serendip.these…[Read more]

Piña,cotton,wool,linen,polyester,and nyl0n fabrics are s0me of the natural and synthetic polymers utilized in the garment industqy.bulletproof vests and helmets are made of polymers.windshields of vehicles are made of glass sheets,laminated with clear plastics.when shattered,the plastic holds the glass in vehicles is made of alternathing layers…[Read more]