Copper 390 380 Silver 230 Platinum 130 Five metal samples, with equal masses, are heated to 200oC. Each solid is dropped into a beaker containing 200 ml 15oC water. Which metal will cool the fastest? A) aluminum B) copper C) gold D) platinum None of the E) Explanation: The correct answer is platinum. Specific heat is the measure of the heat energy required to increase or decrease the temperature of a substance by a certain temperature interval. Platinum has the lowest specific heat; that means it takes less energy to lower or raise the temperature of platinum compared to the other four solids. 30) Conduction occurs more easily between solids and liquids. This is because the particles in are further and A) move faster. closer together and B) move faster. further and move C) more slowly. closer together and move D) more slowly. None of the E) above Explanation: Gases do not transfer heat as easily through conduction because their particles are further apart and move faster. Close proximity of molecules in a substance helps facilitate the transfer of heat. Quiz Standard 8 Answer Key Teacher Name: Quiz Generated On: 04-29-2016 1) Barbie sits on one end of a see-saw and Ken sits on the Barbie goes up in the air and Ken stays down on the ground. In order for Ken to make Barbie move down, he should stand on the A) board.
Copper 390 380 Silver 230 Platinum 130 Five metal samples, with equal masses, are heated to 200oC. Each solid is dropped into a beaker containing 200 ml 15oC water. Which metal will cool the fastest? A) aluminum B) copper C) gold D) platinum E) None of the Explanation: The correct answer is platinum. Specific heat is the measure of the heat energy required to increase or decrease the temperature of a substance by a certain temperature interval. Platinum has the lowest specific heat; that means it takes less energy to lower or raise the temperature of platinum compared to the other four solids. 30) Conduction occurs more easily between solids and liquids. This is because the particles in are A) further and move faster. B) closer together and move faster. C) further and move more slowly. D) closer together and move more slowly. E) None of the above Explanation: Gases do not transfer heat as easily through conduction because their particles are further apart and move faster. Close proximity of molecules in a substance helps facilitate the transfer of heat. Quiz Standard 8 Answer Key Teacher Name: Quiz Generated On: 04-29-2016 1) Barbie sits on one end of a see-saw and Ken sits on the Barbie goes up in the air and Ken stays down on the ground. In order for Ken to make Barbie move down, he should A) stand on the board.
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