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15
×
What metal ion produces lilac color flame?
Potassium (K)
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trap
No points!
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gold
Win 50 points!
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fairy
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25
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baam
Lose 25 points!
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15
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What does metallic bond have that other type of bonds doesn't have?
delocalized electrons
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15
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What are valence electrons?
electrons at the outermost shell.
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15
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What bond is in the molecule of water?
covalent bonds
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How do enzyme work in a chemical reaction?
It acts as a catalyst. Using less energy while producing similar amount of products at a shorter periodof time.
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15
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What is the electron configuration of Calcium (Ca)?
2,8,8,2
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15
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The process by which particles move from an area of higher concentration to an area of lower cconcentration.
diffusion
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15
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Give 3 reasons why Francium is the most reactive element?
bigger size more shells, weaker electrostatic force, easy to donate valence electron
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15
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It has similar number of protons and electrons but different atomic mass.
Isotopes
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Who proposed the "Plum Pudding Theory" of atom?
Joseph John (J.J.) Thomson
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monster
Reset all scores!
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gold
Win 50 points!
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gift
Win 15 points!
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banana
Go to last place!
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15
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Which is the most reactive non-mental element.
Fluorine
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15
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What is used in bioleaching?
bacteria
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banana
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star
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fairy
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25
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lifesaver
Give 20 points!
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15
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It is the 7th group of elements.
Halogens
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