Chemistry

Chemistry, 03.10.2019 01:30, zahid79

Is plastic wrap anf mixture or substance

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Chemistry, 22.06.2019 21:50, donttrip10

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car

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Mathematics, 19.07.2019 12:30, heyyyyy39

Leon has a piece of cheese shaped like a triangular prism that he needs to wrap in plastic wrap. what is the minimum amount of plastic wrap that he needs to cover the entire piece of cheese? 42 squared 84 squared 96 squared 108 squared

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Social Studies, 18.08.2019 18:50, ligittiger12806

Earth science – unit 6: earth's water experiment: water purification imagine being stranded in the desert without any clean water. how would you survive without becoming dehydrated? as long as you have a piece of plastic, some rocks, and a cup, you can purify dirty water using the water cycle. the purification process uses the "greenhouse effect" to cause evaporation and condensation. the setup used to purify the water is called a solar still. in this experiment, you will purify water using a solar still. objectives explain how evaporation and condensation can be used to purify water. materials 1 cup of dirt 4 cups of water small glass large glass bowl clear plastic wrap small, round rock sunshine directions pour the water into the bowl. mix in the dirt. place the small glass in the center of the bowl. the lip of the glass should stand taller than the dirt and water mixture, but shorter than the sides of the bowl. find a sunny spot outside. place the bowl in direct sunlight. place the plastic wrap over the bowl. put the rock in the center of the plastic wrap, directly over the cup. gently push down on the rock until the sides of the plastic wrap slope at about a 45° angle. secure the loose sides of the plastic wrap to the outside of the bowl. leave the bowl in the sun for three or four hours. remove the plastic wrap. look in the cup and in the bowl. record your observations. respond to the questions below. questions answer the questions in the essay box below. is the water in the cup dirty? why or why not? what happened to the water in the bowl? this project simulates a real world process. what does the plastic wrap represent? what does the water in the cup represent? which two parts of the water cycle are at work?

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Biology, 27.09.2019 02:00, Emptypockets451

Pour the water into the bowl. mix in the dirt. experiment: water purification place the small glass in the center of the bowl. the lip of the glass should stand taller than the dirt and water mixture, but shorter than the sides of the bowl. find a sunny spot outside. place the bowl in direct sunlight. place the plastic wrap over the bowl. put the rock in the center of the plastic wrap, directly over the cup. gently push down on the rock until the sides of the plastic wrap slope at about a 45° angle. secure the loose sides of the plastic wrap to the outside of the bowl. leave the bowl in the sun for three or four hours. remove the plastic wrap. look in the cup and in the bowl. record your observations. respond to the questions below. questions answer the questions in the essay box below. is the water in the cup dirty? why or why not? what happened to the water in the bowl? this project simulates a real world process. what does the plastic wrap represent? what does the water in the cup represent? which two parts of the water cycle are at work?

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