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Published byMaurice Bryant Modified over 9 years ago
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You have 5 minutes left! 1. What phases are shown in the three images below? A. Image 1 is gas, image 2 is liquid, and image 3 is solid. B. Image 1 is liquid, image 2 is solid, and image 3 is gas. C. Image 1 is solid, image 2 is liquid, and image 3 is gas. D. Image 1 is gas, image 2 is solid, and image 3 is liquid. 2. An unopened bottle of water is taken out of the refrigerator and placed on a table. After a while, the bottle is covered with droplets of water. What phase change has occurred? A. melting B. freezing C. boiling D. condensation
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You have 4 minutes left! 1. What phases are shown in the three images below? A. Image 1 is gas, image 2 is liquid, and image 3 is solid. B. Image 1 is liquid, image 2 is solid, and image 3 is gas. C. Image 1 is solid, image 2 is liquid, and image 3 is gas. D. Image 1 is gas, image 2 is solid, and image 3 is liquid. 2. An unopened bottle of water is taken out of the refrigerator and placed on a table. After a while, the bottle is covered with droplets of water. What phase change has occurred? A. melting B. freezing C. boiling D. condensation
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You have 3 minutes left! 1. What phases are shown in the three images below? A. Image 1 is gas, image 2 is liquid, and image 3 is solid. B. Image 1 is liquid, image 2 is solid, and image 3 is gas. C. Image 1 is solid, image 2 is liquid, and image 3 is gas. D. Image 1 is gas, image 2 is solid, and image 3 is liquid. 2. An unopened bottle of water is taken out of the refrigerator and placed on a table. After a while, the bottle is covered with droplets of water. What phase change has occurred? A. melting B. freezing C. boiling D. condensation
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You have 2 minutes left! 1. What phases are shown in the three images below? A. Image 1 is gas, image 2 is liquid, and image 3 is solid. B. Image 1 is liquid, image 2 is solid, and image 3 is gas. C. Image 1 is solid, image 2 is liquid, and image 3 is gas. D. Image 1 is gas, image 2 is solid, and image 3 is liquid. 2. An unopened bottle of water is taken out of the refrigerator and placed on a table. After a while, the bottle is covered with droplets of water. What phase change has occurred? A. melting B. freezing C. boiling D. condensation
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You have 1 minute left! 1. What phases are shown in the three images below? A. Image 1 is gas, image 2 is liquid, and image 3 is solid. B. Image 1 is liquid, image 2 is solid, and image 3 is gas. C. Image 1 is solid, image 2 is liquid, and image 3 is gas. D. Image 1 is gas, image 2 is solid, and image 3 is liquid. 2. An unopened bottle of water is taken out of the refrigerator and placed on a table. After a while, the bottle is covered with droplets of water. What phase change has occurred? A. melting B. freezing C. boiling D. condensation
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Time’s up kiddo’s!!!!!!!!
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Correct Answer: B — freezing Explanation: Freezing is the phase change from a liquid to a solid. Different materials freeze at different temperatures. Water freezes at 0°C. Molten lava has a much higher freezing point, about 1000°C! Molten lava pours from a volcano in Hawaii. After a few hours, the liquid lava hardens into a shiny gray rock. Which phase change has taken place? A. melting B. freezing C. boiling D. condensation
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Correct Answer: B — Image 1 is liquid, image 2 is solid, and image 3 is gas. Explanation: In a liquid, molecules are packed together and move freely. Molecules in a liquid will not show a pattern. Image 1 shows a liquid. In a solid, molecules are held together in a rigid structure. The molecules in a solid will often have a pattern. Image 2 shows a solid. In a gas, molecules move freely and are spaced far apart. Image 3 is a gas. Correct Answer: D — condensation Explanation: The water on the bottle actually came from the air around the bottle. Air contains a small amount of water vapor. When this air hits a cold surface, the water vapor cools and condenses on the bottle.
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