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Properties of water
Mrs McSwords
| Question | Answer |
|---|---|
| What are the two different molecules in water? | hydrogen and oxygen |
| what is polarity? | consisted in which opposite ends have a positive and negative charge. |
| in which states of matter can water exist in nature on earth? | soiled, liquid and gas |
| True or false: fresh water density is lowest at 4 degrees Celsius. | false it can go lower. |
| way dose ice float in water? | water becomes less dense. |
| why dose surface water sink and the water on the bottom rise? | because the warm water is heaver. |
| how do you tell when water is at its max density ? | warm water rises. |
| why does ice stay on the surface? | warmer air |
| what causes water? | macules |
| Identify 5 of earth's oceans. | Pacific, Atlantic, Indian, Arctic, Southern |
| what ocean is the deepest? | Pacific |
| How does the ocean get salty? | Rain water washes over rocks and minerals |
| Name the 2 sources of water in the Earth's oceans? | condensation (rain) and asteroids & comets |
| Brackish water is made of: | fresh and sea water |
| Resources from the seafloor: | energy sources and minerals |
| Examples of energy sources from the seafloor. | oil, natural gas, methane |
| sodium chlorine breaks apart or____. | dissolves |
| True or False:The density of ice is lower than the same density of liquid water. | True |
| Are particles of liquid water closer or farther together than particles of the same volume of frozen water. | Closer |
| The _____ charge of the oxygen atom of 1 molecule attracts the _____charge hydrogen atoms of other water molecules | negative/positive |
| Define cohesion | attraction among molecules that are alike |
| Define adhesion | attraction of molecules that are not alike |
| How does sodium chloride dissolve in water? | + charged sodium atoms (Na+) are attracted to the (-) charged oxygen atoms of water, the (-) charged chlorine atoms(Cl) are attracted to the (+) charged hydrogen atoms. The sodium chlorine breaks apart (dissolves). |
| The importance of water's density to life on earth. | the water freezes and becomes less dense. |