An acid is a substance that produces hydrogen ions in water. When an acid dissolves in water, hydrogen molecules interact with water molecules to form hydronium ions. The strength of an acid is determined by the concentration of hydrogen atoms; the more hydrogen atoms in a solution, the stronger the acid; and, the less hydrogen atoms in a solution, the weaker the acid. Acids generally have a sour taste, react strongly with metals, and become less acidic when mixed with a base.
A base is a substance that forms hydro...
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- Animals are used in research to develop new medicines and for scientists to test the safety of the medicines. This animal testing is called vivisection. Research is being carried out at universities, medical schools and even in primary and elementary schools as well as in commercial facilities which provide animal experiments to industry. (UK Parliament) In addition, animals are also used in cosmetic testing, toxicology tests, “defense research” and “xenotransplantation”. All around the world, a huge amount of animals are sentenced to life in a laboratory cage and they are obliged to feel loneliness and pain.... [tags: Against Animal Testing]
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1634 words (4.7 pages)
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