Definitions c1

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Isotopes
Elements made up of the same type of atoms
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Compund
A compound is formed when 2 or more different elements are chemically joined together
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Ions
An ion is a particle formed when an atom loses or gains one or more electrons to become stable
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Ionic bond
Ionic bonds form when a metal transfers electrons to a non metal producing positive and negative ions
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Covalent bonds
A covalent bond is formed when 2 non metal atoms share an electron pair to obtain a stable electron
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Molecule
A molecule is 2 or more atoms covalently bonded
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Alloys
An alloy is a mixture of 2 or more elements at least one of which is a metal
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Nanoparticles
A nanoparticle is a structure that is 1-100nm in size, they contain a few hundred atoms
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Element
An element is made up of only 1 type of atom
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Melting point
A melting point is the temperature at which a solid changes to a liquid
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Boiling point
A boiling point is the temperature at which a liquid changes to a gas
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Relative atomic mass
The relative atomic mass of an element is a weighed mass of the isotope of the element compared to that of carbon 12 which has a mass of exactly 12
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Pure substance
A pure substance has a sharp, specific melting and boiling point
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Other cards in this set

Card 2

Front

Compund

Back

A compound is formed when 2 or more different elements are chemically joined together

Card 3

Front

Ions

Back

Preview of the front of card 3

Card 4

Front

Ionic bond

Back

Preview of the front of card 4

Card 5

Front

Covalent bonds

Back

Preview of the front of card 5
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