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Chemical bond types and naming conventions (3 ES ...

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    Chemical bond types and naming conventions. Physics and chemistry 3rd ESO
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  • What is a chemical compound?
    A substance formed by 2 or more atoms chemically joined together
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  • Why do atoms form compounds?
    To become stable by gaining, loosing or sharing electrons
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  • Which group of elements is the most reactive? Why?
    Group 17; they only need 1 electron to become stable
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  • When a neutral atoms gains 1 electron, it becomes a NEGATIVE ion. WHY?
    Because now it has more electrons that protons
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  • What are the 3 types of chemical bonds?
    Ionic bonds, covalent bonds and metallic bonds
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  • Covalent bonds happen between METAL/NON-METAL and METAL/NON-METAL elements.
    non-metal and non-metal elements
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  • In covalent bonds, atoms GAIN/LOSE/SHARE electrons.
    share
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  • Nitrogen is in group 15. How many covalent bonds can it form?
    up to 3
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  • In ionic bonds, atoms GAIN/LOSE/SHARE electrons?
    gain and lose
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  • Ionic bonds happen betweem METAL/NON-METAL and METAL/NON-METAL elements.
    metal and non-metal
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  • An ionic bond is formed because of _________ attraction between an anion and a cation.
    ELECTRICAL attraction
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  • What type of bond will form between N and O?
    covalent
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  • What type of bond will form between Mg and O?
    ionic
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  • What do we call this compound? KF
    potassium flouride
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  • What do we call this compound? CaS
    calcium sulphide
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  • What is 'oxidation number'?
    a number with a +/- sign that represents the number of electrons that an atom would gain or lose when it forms a compound
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