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20
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What is an Ionic bond?
When a big amount of cations interact with a big amount of anions becomes stable to form an ionic crystal
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10
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What is a molecule of an element?
A group of atoms of same element
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15
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What are characteristics of non metals?
No metallic shine, bad conductors of heat and electricity, many gases, low mp and bp, tend to gain electrons, solids are rigid
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15
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What is a molecule of a compound?
When atoms of at least two different elements combine
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15
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Why do atoms remain bonded?
If the energy of the system is lower when they are bonded than when they are apart
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banana
Go to last place!
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star
Double points!
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gift
Win 5 points!
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thief
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25
15
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What is a metallic bond?
Positive ions of a metal share an electron cloud that hold the atoms together in a metallic substance
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15
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How do elements appear in order on the periodic table?
Increasing atomic number
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10
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What are the columns of the periodic table also called?
Groups or families
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20
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What are characteristics of metals?
Metallic shine, good conductors of heat and electricity, solid in normal conditions, high mp and bp, tends to loose electrons, flexible and ductile
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10
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What are molecules made of?
A certain number of atoms
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10
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What is a covalent bond?
non mental + non metal by sharing electrons
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banana
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rocket
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rocket
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lifesaver
Give 10 points!
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15
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What are crystals made of?
A variable number of atoms, ions or molecules, arranged in a pattern that is periodic in 3D
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10
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What is the octet rule?
After bonding, the atoms exchange electrons in order to get 8 electrons in the outer shell
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heart
Other team wins 20 points!
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gold
Win 50 points!
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shark
Other team loses 10 points!
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banana
Go to last place!
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