chem lab 1 - 2. The reason that density of scandium is...

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What did you learn? I learned how to verify the volume of an object not directly through the variation of water’s volume before and after putting the purpose. I learned how to calculate the measurement like range, average, deviation… 2 objects have the same volume but different masses; the object has mass fewer than the other will be soaring high because of its density. What do you think? 1. A. steel > aluminum: because steel’s mass > aluminum’s. B. Cold steel > hot steel: steel increase volume when it’s heated C. Water > ice: ice constantly floats when adding up into water D. the nucleus of an atom > the whole atom: the volume of whole atom > the nucleus and the mass of an atom is generally in nucleus
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Unformatted text preview: 2. The reason that density of scandium is twice as calcium even though they have the same mass is because the volume of calcium is twice as scandium. 3. Because of its gas bladder, fish can able to swim. The gas bladder is a gas that initiates gases (oxygen) to increase fish’s volume and buoyancy. Buoyancy is the upward power on fish in water. Fish floats by raising gas in gas bladder and sinks by decreasing volume of gas bladder. 4. The submarine is controlled to float or sink by satisfying the ballast tanks with both air and water to change the mass and density. They controlled the submarine to float or sink regulate the water and air in the ballast tanks....
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This document was uploaded on 03/01/2010.

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