Metal reactions and properties at Albany Junior High School NZ
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| Metals | Elements that are shiny, conduct heat and electricity well and often have high melting and boiling points.
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| non-metals | Elements that are not shiny, and do not conduct heat and electricity well. They often have low melting and boiling points. The solid ones are brittle.
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| Property | Something that is used to describe how a material behaves and what it is like. Hardness is a property of some solids.
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| Salts | Compounds made in some reactions involving acids. They have a metal part and a non-metal part. The non-metal part is usually chloride, sulphate or nitrate (e.g. potassium sulphate).
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| Weathered | Broken down by chemical or physical changes.
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| Base | A chemical which reacts with an acid to form a salt.
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| Neutralisation | Mixing an acid and a base together to make a solution with a pH of 7.
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| Oxidised | When a substance reacts with oxygen to form an oxide.
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| Reactive | A substance that reacts with many other substances, or reacts very easily.
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| Unreactive | A substance that reacts with few other substances, or reacts very slowly or not at all.
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| Corrode | When something (such as stone or metal) reacts with chemicals in the air or water and gets worn away.
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| Oxide | A compound formed when something reacts with oxygen.
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| Reactivity Series | A list of metals which shows them in order of their reactivity, with the most reactive at the top.
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| Sulphates | Compounds containing sulphur and oxygen. They are the type of salt formed when a reaction with sulphuric acid occurs.
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| Bonds | Forces holding particles together.
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| displace | When one element takes the place of another in a compound – a type of substitution.
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| Displacement reaction | A reaction where one element takes the place of another in a compound.
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| electrolysis | A process where electricity is used to split compounds apart, normally to produce an element.
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| Metals | good conductors of heat and electricity
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| Metals | shiny
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| Metals | solids, often with high melting points (except for mercury)
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| Metals | found on the left-hand side of the Periodic Table
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| Metals | sometimes magnetic – three metals are magnetic (iron, cobalt and nickel)
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| Metals | form basic oxides
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| Metals | rigid when thick and bendy when thin
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| Metals | can be hammered into shape
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| Non-metals | poor conductors of heat and electricity (except for carbon in the form of graphite which conducts electricity)
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| Non-metals | dull
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| Non-metals | mostly solids or gases
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| Non-metals | found on the right-hand side of the Periodic Table
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| Non-metals | never magnetic
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| Non-metals | form acidic oxides
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| Non-metals | brittle
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| Non-metals | cannot be hammered into shape – the solid ones break
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| metal reacting with an acid | salt and hydrogen gas is given off.
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| Chlorides | made when hydrochloric acid is used.
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| Sulphates | made when sulphuric acid is used.
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| Nitrates | made when nitric acid is used.
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| test for hydrogen | put a burning splint into a test tube of gas. If hydrogen is present, it will explode with a squeaky ‘pop’.
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| Bases | l metal oxides, metal hydroxides and metal carbonates
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| metal oxide / metal hydroxide reacting with an acid | form water and a salt by neutralisation.
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| metal carbonate reactingwith an acid. | form salt, carbon dioxide and water by neutralisation
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| test for carbon dioxide | Limewater goes milky if carbon dioxide is bubbled through it.
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| Sequence to make copper sulfate | Sulphuric acid. Add copper oxide powder. Add powder until unreacted copper oxide is left. Filter & remove unreacted copper oxide. Transfer filtrate to evaporating basin. Heat basin gently. When third of water evaporates, leave to cool. Examine crystals.
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