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Chemical bond types and naming conventions (3 ES ...
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Game Code: 321376
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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
15
Why do atoms form compounds?
To become stable by gaining, loosing or sharing electrons
15
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
15
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.
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15
Nitrogen is in group 15. How many covalent bonds can it form?
up to 3
15
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
15
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
15
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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