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- 1. Multiple ChoiceThe Law of Conservation of Energy states:Energy can created or destroyed but not transformedEnergy cannot be created or destroyed, it can only transformedEnergy can't be created, destroyed or transformed
- 2. Multiple Choice
After cooking, you place a hot pan on a cold counter. After a while, the frying pan, the counter, and the air in the room will all be at the same temperature. Why?
Because thermal energy will be transferred from the pan to its surroundings
Thermal energy from the pan will be transferred to the air, but not the counter
Thermal energy from the pan will absorb the coldness from the counter
None of the above
- 3. Multiple Choice
The heat energy that is released when fuel is consumed was originally stored in the fuel's...
chemical bonds
burning flame
waste products
candle wx
- 4. Multiple Choice
Nash puts his cold Coke Slurpee on to the metal roof of his mom's car. Describe the heat transfer that takes place.
Heat is transferred from the car's roof into the Slurpee and increases the temperature of the Slurpee.
Heat is transferred from the Slurpee into the roof and increases the temperature of the roof.
The Slurpee stays the same temperature until it is completely gone.
The roof doesn't change temperature due to the fact that it sits in the sun all day.
- 5. Multiple Choice
On a cold day, Jamarria puts a hot bowl of soup down on a concrete table. Describe the energy transformation that will occur.
Heat from the air is transferred to Jamarria's hand.
Heat from the hot bowl of soup is transferred to the car door.
Heat from the concrete table is transferred to the hot bowl of soup.
Heat from the hot bowl of soup is transferred to the concrete table.
- 6. Multiple Choice
If energy is lost during a chemical reaction, it is usually lost in the form of...
potential energy
radiant energy
heat energy
all of the above
- 7. Multiple Choice
Heat always travels from...
Warm to cool
Cool to warm
Warm to warm
Cool to cool
- 8. Multiple ChoiceAccording to which law of energy, energy can't be created or destroyed?First law of motionThe law of tacosLaws of Energylaw of conservation of energy
- 9. Multiple ChoiceWhat is the left part of a chemical equation called?
H2 + O → H2OReactantsProductsYieldsChemical Equation - 10. Multiple Choice2H2 + O2 ----> 2H2O What is the product?------>2H2O2H2+ O2
- 11. Multiple Choice
When reactants combine, the resulting products need to have ________ the reactants
the same properties as
many properties in common with
different properties than
none of the above
- 12. Multiple Choice
In a chemical reaction, you begin with 23 atoms. When the reaction is over you would expect to have ______ atoms remaining.
23
less than 23
more than 23
There is not enough information to tell
- 13. Multiple ChoiceHow many TOTAL atoms are on the REACTANT side of this equation?
CH4 + 2O2 → CO2 + 2H2O57911 - 14. Multiple Choice
If reactants' mass is 18g , what is the mass of the reactants ?
15
36
81
18
- 15. Multiple ChoiceHow many elements are in C6H12O6?1234
- 16. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 17. Multiple ChoiceWhich of the following is a sign that a chemical reaction has occurred?change in shapemeltingformation of a gasdissolving
- 18. Multiple ChoiceFizzing, foaming, and burning are all examples ofChemical changePhysical change
- 19. Multiple ChoiceIs melting iron a physical or chemical change?PhysicalChemical
- 20. Multiple ChoiceIs bending copper wire a physical or chemical change?PhysicalChemical
- Answer choicesTagsAnswer choicesTags