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15
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Balanced or Unbalanced? 6CO2 + 6H2O â C6H12O6 + 6O2
Balanced
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eraser
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fairy
Take points!
5
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25
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gift
Win 25 points!
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lifesaver
Give 25 points!
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15
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How do you determine if a chemical equation is balanced or unbalanced?
The total amount of atoms of each element must be the same on the reactants and products side of the equation.
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15
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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
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Physical or Chemical Change: Sugar dissolving in tea.
Physical
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seesaw
Swap points!
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magnet
Take 15 points!
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rocket
Go to first place!
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thief
Give points!
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25
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banana
Go to last place!
Oops!
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shark
Other team loses 15 points!
Okay!
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
15
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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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15
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Physical or Chemical Change: A chain link fence rusting
Chemical
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The ____________________ are the elements or compounds on the left side of a chemical equation.
Reactants
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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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Which of the answers below would be a correct chemical symbol of an element? a. BE b. be c. bE d. Be
Be
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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
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Balanced or Unbalanced? Mg + HCl â MgCl2 + H2
Unbalanced
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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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How many atoms, elements, and molecules does the following formula have: 4C3H8 ?
Atoms: 44, Elements: 2, Molecules: 4
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