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15
×
Briefly explain the Law of Conservation of Mass in your own words.
The Law of Conservation of Mass states that matter cannot be created or destroyed.
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lifesaver
Give 25 points!
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seesaw
Swap points!
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rocket
Go to first place!
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baam
Lose 5 points!
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15
×
Which of the following chemical formulas contains the most molecules? a. 5CO b. 3H2O c. 2Fe2O3 d. 4C3H8
a. 5CO
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15
×
Which number in a chemical formula tells you how many molecules of an element or compound you have?
Coefficient
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trap
No points!
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seesaw
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rocket
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banana
Go to last place!
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15
×
Physical or Chemical Change: A chain link fence rusting
Chemical
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thief
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5
10
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25
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magnet
Take 5 points!
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gift
Win 25 points!
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banana
Go to last place!
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15
×
How many atoms, elements, and molecules does the following formula have: 4C3H8 ?
Atoms: 44, Elements: 2, Molecules: 4
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15
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In a(n) ____________________ equation the number of atoms for each element are equal for the reactants and products.
Balanced
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15
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Balanced or Unbalanced? 6CO2 + 6H2O â C6H12O6 + 6O2
Balanced
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15
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If the number of atoms of each element in a chemical equation are not equal on both sides of a chemical equation, then the equation is -
Unbalanced
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15
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The __________ are the elements or compounds on the right side of a chemical equation.
products
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15
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Physical or Chemical Change: A piece of bread molds.
Chemical
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15
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A(n) ____________________ is a shorthand representation of an element or compound using chemical symbols.
Chemical Formula
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thief
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5
10
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20
25
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fairy
Take points!
5
10
15
20
25
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rocket
Go to first place!
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lifesaver
Give 25 points!
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15
×
Balanced or Unbalanced? SnO2 + 2H2 â Sn + H2O2
Unbalanced
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