Structure of matter a. Evidence of the Prticulate Nature of Matter The idea that matter is made up of minute particles called atoms dates back to the ancient Greeks. According to the Greek philosopher Democritus, a given piece of substance, say a piece of yam, can be cut into smaller and smaller bits, until eventually
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The benefits of the internet are as follows: INFORMATION: The internet gives you access to information on any subjects of your interest. This makes the internet a valuable research tool. Most sources such as news paper and magazines have websites and a number of them only exist online. RESEARCH: You can make use of the
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Definition of Authority Authority is the legitimate or socially approved use of power. It is the legitimate power which one person or a group holds over another. The element of legitimacy is vital to the notion of authority and is the main means by which authority is distinguished from the more general concept of power.
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Calculation of Mean, Median and Mode of Ungrouped Data Mean, median, and mode are three basic ways to look at the value of a set of numbers. You will start by learning about the mean. The mean, often called the average, of a numerical set of data, is simply the sum of the data values divided
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Introduction to Organic Chemistry – Hydrocarbons Organic chemistry originally meant the chemistry of compounds obtainable from plants and animals – living organisms. Organic chemistry is that branch of chemistry that deals with the structure, properties, and reactions of compounds that contain carbon. In other word, organic chemistry is defined as the chemistry of carbon compounds.
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Introduction There are no special respiratory organs in unicellular and aquatic organisms such as Amoeba and Paramecium. Oxygen that dissolves in water diffuses into the body while carbon dioxide goes out of the body through the entire body surface. The cell membrane acts as the respiratory surface. The concentration of oxygen in water is higher
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Introduction The term solubility refers to the maximum amount of material that will dissolve in a given amount of solvent at a given temperature to produce a stable solution. Saturated and Unsaturated Solution A saturated solution of a solute at a particular temperature is one which contains as much solute as it can dissolve at
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Programme A program is a set of instructions given to a computer to perform a specific task. A computer program is a list of instructions that tell a computer what to do. Everything a computer does is done by using a computer program. Some examples of computer programs: A web browser like Mozilla Firefox and Apple Safari can be used
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Magnifiers Perhaps the simplest optical instrument is the lens magnifier. Without optical aid, we cannot “see” things close up. The eye will simply not focus closer than about 0.25 m (unless you are nearsighted!). But an object places just inside the focal point of a converging lens will produce a large virtual image that can
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Topic: Aquatic Habitat Introduction Aquatic habitat is a body of water in which certain organisms live naturally. In other words, aquatic habitats are habitats or places that relates to lives in water. Organisms that live in water are called aquatic organisms. Examples of aquatic organisms are fish, crabs, toads, plants etc.[membership] Types of Aquatic Habitats There
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