Types of structure: Elements compounds and mixtures: Chemistry: (9:1)

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16 Terms

1
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Ion

An atom or group of atoms that has lost or gained electrons and therefore a positive or negative charge.

<p>An atom or group of atoms that has lost or gained electrons and therefore a positive or negative charge.</p>
2
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Polyatomic ion

An ion that is made of more then one atom

<p>An ion that is made of more then one atom</p>
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Metal ion

an atom which has lost electrons forming a positive ion

<p>an atom which has lost electrons forming a positive ion</p>
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Non-metal ion

an atom which has gained electrons forming negative ions.

<p>an atom which has gained electrons forming negative ions.</p>
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Covalent bond

a shared pair of electrons

<p>a shared pair of electrons</p>
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Molecule

two or more atoms held together by covalent bonds

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Metallic bonding

Positively charged metal ions are surrounded by delocalised outer electrons

<p>Positively charged metal ions are surrounded by delocalised outer electrons</p>
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Particles in an ionic compound

Positive and negative ions

<p>Positive and negative ions</p>
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Particle in a simple covalent substance

Molecules

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Particles in a giant covalent substance

Covalently bonded atoms

<p>Covalently bonded atoms</p>
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Particles in a metallic substance

Positive ions and delocalised electrons

<p>Positive ions and delocalised electrons</p>
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Electrostatic forces of attraction

Strong forces of attraction between oppositely charged particles

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Elements that form ionic compounds

Metals and non-metals together

<p>Metals and non-metals together</p>
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Elements that form covalent bonds

non-metals

<p>non-metals</p>
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Elements that form metallic bonds

metals and alloys

<p>metals and alloys</p>
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Alloy

A metal mixed with other elements

<p>A metal mixed with other elements</p>