1. Science Jeopardy $100 $200 $300 $400 $500 Chemical Reactions
Law of Conservation of Mass
Acids and Bases
The Chemistry of Living Things
Density
Buoyancy
$100
$200
$300
$400
$500
Type in your category names. Then go to each slide and type in your questions and answers for each category. Slides start with # 2 in the top left hand corner and move down to the end of the category then go to the top of the next category to the right. (2-6 then 7-11 etc.)
When you run the power point and you click on the dollar amount the question will show up. Click the space bar to see the answer. Click MAIN to return to the category page. The dollar amount will change color to indicate the question has already been used. To reset the game, close the power point and reopen it. If you type .pps at the end it will open in a slideshow. If you type .ppt it will open to edit.
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2. The 6 after the H in C3H6 is called a ___________.
Subscript
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3. What are the reactants in the following chemical equation
What are the reactants in the following chemical equation? 2C2H6 + 7O CO2 + 6H2O
2C2H6 + 7O2
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4. In the chemical equation 2C2H6 + 7O2 4CO2 + 6H2O, what does the arrow mean?
Yields
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5. The four clues that a chemical change has occurred are:
Gas formation (bubbles)
Energy change (heat or light)
Color change
Solid formation
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6. New substances can only be formed by ______ __________.
Chemical reactions
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7. cannot be created or destroyed
The law of conservation of mass states that ___________ ____________________________.
Mass/matter/atoms
cannot be created or destroyed
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8. In a chemical equation, the number of atoms at the beginning of the reaction are _________ the number of atoms at the end of the equation.
Equal to
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9. Is this equation balanced or unbalanced? N2 + H2 NH3
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10. Why do we have to balance this equation? N2 + H2 NH3
There are less atoms in the products, so it looks like atoms were destroyed in the reaction (which is impossible.)
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11. What is the balanced equation for this reaction? N2 + H2 NH3
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12. Lemon juice and vinegar are classified as ____________.
Acids
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13. Ammonia is classified as a __________.
base
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14. Acids have a pH of ________.
Less than 7
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15. Pure water is a neutral substance that has pH of ________.
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16. Acids usually contain this element.
(Hydrogen)
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17. Covalent compounds that are composed of carbon-based molecules are called _______.
Organic Compounds
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18. Why does Carbon form the backbone of organic compounds?
Carbon can form up to 4 bonds.
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19. Which of the following is a carbohydrate: sugar, enzymes, cooking oil, DNA?
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20. In which group of organic compounds does DNA belong?
Nucleic Acid
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21. In which cell structure would you find an abundance of phospholipids?
Cell membrane
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22. Density is ______ per _______.
Mass per volume
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23. What is the density of an object that has a volume of 200 mL and a mass of 400g?
2 g/mL
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24. A cereal box is 5cm by 4cm by 2cm
A cereal box is 5cm by 4cm by 2cm. If its mass is 20 g, what is the density of the box?
.5 g/cm3
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25. The amount of matter in a certain volume is __________.
density
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26. A liquid has a density of 2g/mL. If the mass is 50g, what is its volume?
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27. A buoyant force on an object causes it to ____________.
float
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28. Which liquid is the least dense?
LIQUID D
LIQUID C
LIQUID B
LIQUID A
Liquid D
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29. Density of Bean = Density of Liquid C
If a bean floats in Liquid C, what does that say about the bean’s density?
LIQUID D
LIQUID C
LIQUID B
LIQUID A
Density of Bean =
Density of Liquid C
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30. If an object weighing 100N displaces a volume of water with a weight of 30N, what is the buoyant force on the object?
30N
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31. Which of the following objects will sink in water. 1 g/mL
Which of the following objects will sink in water? g/mL g/mL g/mL g/mL
2 g/mL
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