Basics

Elements are the basic building blocks of all substances and cannot be broken down into simpler substances by chemical means. Elements are made up of one type of atom and each atom contains a +charged nucleus and -charged electrons. In a chemical reaction atoms are rearranged but none are created or destroyed. Compounds are formed when atoms of two or more elements combine

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Metals

Metals: Non-metals: Strong Brittle Malleable and ductile Low melting and boiling points High melting and boiling points Poor conductors of electricity Good conductors of electricity Poor conductors of heat Good conductors of heat Dull looking Mainly solids at room temp. . Shiny when polished

ores found in the earths crust contain metals combined with other elements and these can be extracted using chemical reactions the difficulty involved in extracting metals increases as their reactivity increases

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basics

Elements are the basic building blocks of all substances and cannot be broken down into simpler substances by chemical means. Elements are made up of one type of atom and each atom contains a +charged nucleus and -charged electrons. In a chemical reaction atoms are rearranged but none are created or destroyed. Compounds are formed when atoms of two or more elements combine

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definitions

Oxidation:gain of oxygen Reduction:loss of oxygen displacement/competition reactions: when the more reactive element takes the less reactive elements thing Alloy:a mixture made by mixing molten metals and its properties can be modified by changing its composition aluminum: strong, lightweight, resistant to corrosion, conductor of electricity and heat copper: resistant to corrosion, anti bacterial, good conductor, recyclable, easy to alloy Titanium:lightweight, strong, corrosion resistant and abundant in nature.

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Salts

acid+metals=salt + hydrogen acid + alkali= salt + water acid + base= salt +water acid + carbonate= salt+carbon dioxide + water acid +hydrogen=salt +carbon dioxide + water hydrochloric=chloride sulfur=sulphate nitric=nitrate

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