8th Benchmark MP2
Quiz by R. Solomon
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18 questions
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- Q1How can you reduce energy transfer to or from a sample of water?Use insulation to reduce energy transfer.Use expansion to reduce energy transfer.Use problem-solving skills to prevent energy transfer.Use compression to reduce energy transfer.45s
- Q2What is an engineering design problem?A challenge in which insulation is used to determine which provides the most energy transfer.A challenge in which engineers create their own process to answer a problem.A challenge in which scientists attempt to disprove a factual statement.A challenge in which engineers must follow a specific process to answer a problem.45s
- Q3Which explanation correctly explains dissolving?Dissolving occurs when both the solute and solvent particles gain energy and collide.Dissolving occurs when solute particles lose energy, cause the solvent particles to gain energy.Dissolving occurs when solvent particles collide with a solute, breaking it apart.Dissolving occurs when solvent particles gain energy and collide more frequently.45s
- Q4What is the average change in kinetic energy when something dissolves?The kinetic energy will first go up, and then go down.The kinetic energy stays the same.The kinetic energy decreases.The kinetic energy increases.45s
- Q5What happens to the kinetic energy and bonds of molecules when substances melts?The kinetic energy increases and the bonds separate.The kinetic energy decreases and the bonds solidify.The kinetic energy increases and the bonds solidify.The kinetic energy decreases and the bonds separate.45s
- Q6When kinetic energy is increased, which of the following two processes may occur?melting, freezingmelting, evaporationevaporation, condensationcondensation, freezing45s
- Q7What is the difference between dissolving and melting?There is no significant difference between dissolving and melting.Kinetic energy increases for both melting and dissolving.Kinetic energy increases in melting, kinetic energy stays the same for dissolving.Kinetic energy increases for melting and decreases for dissolving.45s
- Q8Which diagram represents a liquid?The second.The first.The third.45s
- Q9A chemical reaction involving 20 grams of water and 10 grams of alka seltzer takes place in a closed water bottle. What will be the total weight after the reaction (not including the bottle)?20 grams10 grams30 grams15 grams45s
- Q10During a chemical reaction, what happens to the atoms?They disappear and new substances appear.They are rearranged to create new substances.They get destroyed and new substances form.They are rearranged and create the same substances.45s
- Q11Energy transfers from particles of _____ energy to particles of _____ energy.same, samehigh, lowlow, lowerlow, high45s
- Q12A compound is made of _____ elements.ThreeSeventeen or more.Two or more.One45s
- Q13O2 (little two!) is how many atoms of oxygen?FourThreeTwoOne45s
- Q14H2O is how many atoms?Three - two O's and one HTwo - one H and one OThree - two H's and one OI don't know!45s
- Q154CO2 (little two!) is how many molecules?EightFourThreeTwelve45s
