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- 1. Multiple Choice
The chemical compound of water isHOH2OH3OHO2 - 2. Multiple ChoiceWater is a universal solventTrueFalse
- 3. Multiple ChoiceA Compound that is being dissolved is called aSolutionSoluteSolventSuspension
- 4. Multiple ChoiceA solvent is...substance into which the solute dissolvesa compound being dissolveda substance that does not dissolveNone of the above
- 5. Multiple ChoiceA water strider can skate along the top of a pond because:covalent bonds result in water cohesionhydrogen bonds result in water cohesion (surface tension)water striders have adapted to take advantage of water cohesionlow surface tension of water
- 6. Multiple ChoiceWhy can water have no net charge but have slight charges in different parts of the molecule?The oxygen end is slightly negative and the hydrogen end is slightly positiveThe hydrogen end is slightly negative and the oxygen end is slightly positiveThe hydrogen and oxygen ends change in polarityBecause it is hydrophobic
- 7. Multiple ChoiceAttractions between water molecules are calledCovalent bondsIonic bondsPolar bondsHydrogen bonds
- 8. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 9. Multiple ChoiceAcids have more what?OH ionsOH- ionsH+ ionsAll of the above
- 10. Multiple ChoiceWater is polar because...The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.The molecule has two poles, at which the it is colder than other regions of the molecule.The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.The water molecule is neutral.
- 11. Multiple ChoiceTrue or false, water is a polar molecule?TrueFalse
- 12. Multiple ChoiceWhat word describes when water is attracted to other substances?cohesionadhesioncapillary actionsurface tension
- 13. Multiple ChoiceThe attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attraction to other water molecules.adhesioncapillary actioncohesionsurface tension
- 14. Multiple ChoiceApproximately what percentage of the water on Earth is freshwater?0.1%2.6%50%97%
- 15. Multiple ChoiceTrue of False: There is less water on our planet today then there was 10,000 years ago.TrueFalse
- 16. Multiple ChoiceAcid (H+) + base (OH-) → water + saltThe reaction above is solutionThe reaction above is a suspensionThe reaction above is neutralizationThe reaction above is condensation
- 17. Multiple ChoiceThe pH scale is a range from:1-70-141-141-20
- 18. Multiple ChoiceA(n) ______ is a substance with a pH less than 7AcidAlkalineBaseBuffer
- 19. Multiple ChoiceA(n) _______ is a substance with a pH greater than 7.BaseAcidBufferWater
- 20. Multiple ChoiceThis substance releases OH- into solutionAcidBaseNeutral
- 21. Multiple ChoiceLarge bodies of water help to keep nearby climates from being too hot or too cold because they...absorb heat in the spring and slowly release that heat in the fallabsorb heat in the fall and slowly release that heat in the springabsorb heat in the summer and slowly release that heat in the winterabsorb heat in the winter and slowly release that heat in the summer
- 22. Multiple ChoiceWhy does water move from the roots to the leaves of plants?Water is pushed by solutes.Capillary action pulls the water molecules like a chain.Water is pulled by gravity.Water’s cohesion causes it to “pull” towards the leaves.
- 23. Multiple ChoiceWhat property of water helps to moderate earth's temperature?adhesioncohesionspecific heat capacitypH
- 24. Multiple ChoiceIn what form of water do the molecules move the fastest?solidliquidgasthey are all the same
- 25. Multiple Choice
Water can dissolve many substances, like ions, gases, and sugars. Water is considered the "-------"
Universal Solvent
Surface Tension
Polarity
Cohesion
- 26. Multiple Choice
Mixture where the components are evenly distributed throughout
solute
solution
solvent
suspension
- 27. Multiple Choice
Which of the following processes is shown by arrow 1 in the image below?
Evaporation
Transpiration
Precipitation
Infiltration/Percolation
- 28. Multiple Choice
Which arrow in the image below shows the following process: Condensation
1
2
4
5
- 29. Multiple Choice
The process of water slowly passing through soil and permeable rock layers in the ground into an aquifer.
Precipitation
Evaporation
Condensation
Infiltration/Percolation
- 30. Multiple Choice
Milk is ___ times more basic than lemon juice.
10
100
1,000
10,000
- 31. Multiple ChoiceA neutralization reaction will (almost) always produce...water & saltwatersaltwater & carbon
- 32. Multiple ChoiceIf an acid is combined with a base of equal strength, the result will most likely bea neutral solution.a stronger acid.impossible to tell without testing the pH.a stronger base
- 33. Multiple Choice
Buffers allow us to keep
Homeostasis
Dynamic equilibrium
Cell transport
Selective permeability
- 34. Multiple Choice
The water that is stored below Earth's surface. It usually can be accessed through wells and or pump.
surface water
groundwater
water table
water cycle
- 35. Multiple Choice
The process of collecting moisture or vapor through the pores in the surfaces of plant's leaves is called
evaporation
transpiration
sublimation
accumulation
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