Category: Chemistry

Chemistry
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DISTINCTION BETWEEN COMPOUNDS AND MIXTURES

DISTINCTION BETWEEN COMPOUNDS AND MIXTURES   The following example of iron, sulphur and iron sulphide will make us understand the difference between mixtures and compounds.  …

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Chemistry
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CONSTITUENTS OF MATTER

CONSTITUENTS OF MATTER   Atoms, Molecules, Elements and Compounds The Atom An atom is the smallest particle of a substance which can have its own characteristic properties….

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Chemistry
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CONDUCTORS AND INSULATORS

CONDUCTORS AND INSULATORS  The ability to conduct electricity is the major simple distinction between elements that are metals and non-metals.   Electrical Conductors A conductor…

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Chemistry
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CLASSIFICATION OF SUBSTANCES

Pure Substance Pure means that only one substance is present in the material and can be a pure element or compound. A simple physical test…

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Chemistry
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CONDUCTORS AND NON-CONDUCTORS

CONDUCTORS AND NON-CONDUCTORS  All metals (copper, iron, lead, magnesium etc) and graphite, a non-metal. Most non-metals (sulphur, iodine, charcoal etc.) Most solid compounds (All gases…

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Chemistry
Posted in Chemistry

COMPOUNDS AND THEIR PROPORTIONS

COMPOUNDS AND THEIR PROPORTIONS  All elements are represented by a chemical symbol. It is either a single capital letter, or a capital letter followed by…

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Chemistry
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MATTER

MATTER  Matter is: Anything that has mass and occupies space (has volume) Composed of particles (molecules, ions, atoms). These are in constant motion attracting one…

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Chemistry
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SIMPLE CLASSIFICATION OF SUBSTANCES

CLASSIFICATION OF SUBSTANCES  Matter Matter can be classified as either a mixture or a pure substance. Mixtures contain at least two substances. If you can…

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Chemistry
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NAMES OF LABORATORY APPARATUS

Which apparatus? You wouldn’t dream of trying a chicken using a spoon, or of drying your hair in over a stove! In everyday life, we…

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Chemistry
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SCIENTIFIC METHOD

SCIENTIFIC METHOD  The scientific method is a set of ideas or a procedure that scientists use to investigate things they want to understand. By using…

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Chemistry
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CHEMISTRY LABORATORY

Safety rules and regulations Your school science laboratory is set up so that you can perform science experiments in safety provided that you follow the…

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Chemistry
Posted in Chemistry

INTRODUCTION TO CHEMISTRY

INTRODUCTION TO CHEMISTRY  Welcome to Chemistry, the Science concerned with the study of matter. In simplest terms, chemistry is the science of matter. Anything that…

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