Grade 10 Chem

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12 Terms

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Ionic Compounds
Compounds formed from the combination of metals and non-metals.
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Molecular Compounds
Compounds composed of two or more non-metals.
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Characteristics of Ionic Compounds
High melting point, very water soluble, highly electrically conductive.
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Example of Ionic Compound
Sodium Chloride (NaCl).
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Characteristics of Molecular Compounds
Lower melting point, tend to not be water soluble, non-conductive of electricity.
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Example of Molecular Compound
Methane (CH4).
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Indicators of Chemical Change
Heat/light production, precipitate from two liquids, gas/bubbles, odour, colour change.
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Valence Electrons and Ionic Charge

Elements gain or lose electrons to achieve a full outer shell

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Law of Conservation of Mass

Mass of reactants = mass of products

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Atoms

Basic units of elements made of protons, neutrons, and electrons.

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Ions

Charged atoms or molecules from gaining or losing electrons.

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Isotopes

Atoms of the same element with different neutron counts.