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15
×
50 g of CO2 + 50g of H2O equals 20g of C6H12O6 + 40g of O2. Is this equation balanced or unbalanced?
Unbalanced
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seesaw
Swap points!
Oops!
×
rocket
Go to first place!
Okay!
×
shark
Other team loses 5 points!
Okay!
×
thief
Give points!
5
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15
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25
15
×
Physical or Chemical Change: A piece of bread molds.
Chemical
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15
×
Physical or Chemical Change: A chain link fence rusting
Chemical
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15
×
A(n) ____________________ is a shorthand representation of an element or compound using chemical symbols.
Chemical Formula
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thief
Give points!
5
10
15
20
25
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star
Double points!
Okay!
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fairy
Take points!
5
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20
25
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banana
Go to last place!
Oops!
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 15 points!
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rocket
Go to first place!
Okay!
×
shark
Other team loses 20 points!
Okay!
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baam
Lose 5 points!
Oops!
15
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Which of the following chemical formulas contains the most elements? a. CO b. NaCl c. NaHCO3 d. H2O
c. NaHCO3
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15
×
Balanced or Unbalanced? 6CO2 + 6H2O â C6H12O6 + 6O2
Balanced
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15
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Which number in a chemical formula tells you how many atoms of an element you have?
Subscript
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15
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Balanced or Unbalanced? SnO2 + 2H2 â Sn + H2O2
Unbalanced
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15
×
The ____________________ are the elements or compounds on the left side of a chemical equation.
Reactants
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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
×
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
×
How many molecules of carbon dioxide does this formula indicate you have: 6CO2?
6
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×
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