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- 1. Multiple ChoiceLarge bodies of water do not quickly fluctuate in temperature. Why?Water is a solvent.Water has a high heat capacity.Water acts as a buffer.Water is non-polar.
- 2. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 3. Multiple Choice
The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid formless polarmore polarless densemore dense - 4. Multiple ChoiceThe tightness across the surface of water that enables paper clips to float is ____________.adhesioncapillary actionsurface tensionpolarity
- 5. Multiple ChoiceWhich statement explains why water molecules stick together?both sides are negativeone side has a positive charge and the other side has a negative chargeone side has a negative charge adn the other side has a neutral chargeboth sides are positive
- 6. Multiple Choice
Surface tension of water is the cohesive force between water molecule and other molecule.
True
False
- 7. Multiple Choice
Surface tension of the water is the cohesive force between water molecule on the surface of water.
True
False
- 8. Multiple Choice
Cohesive force between water molecules and adhesive force between water molecules and other molecules enable this phenomenon __________________ occur.
surface tension
capillary action
float on water
photosynthesis
- 9. Multiple Choice
Water is a compound that consist of 3 atom which is 2 atom oxygen and 1 atom hydrogen
True
False
- 10. Multiple ChoiceWhat word describes when water is attracted to other substances?cohesionadhesioncapillary actionsurface tension
- 11. Multiple ChoiceAttractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are calledCovalent bondsIonic bondsPolar bondsHydrogen bonds
- 12. Multiple ChoiceWhy does ice float?As water freezes, it expands and its density decreases.As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.As water freezes, air becomes trapped between the hydrogen bonds of water molecules.As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
- 13. Multiple ChoiceWhich end of the water molecule has a slightly positive charge?the oxygen endthe hydrogen endboth ends are slightly positiveneither end is positive
- 14. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 15. Multiple ChoiceWhich of the following is LEAST likely to dissolve in water?nonpolar fats and oilspolar sugar moleculessalt made of a positive sodium ion and a negative chloride ionall of the substances will dissolve easily in water
- 16. Multiple ChoiceLarge bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?Water is an acid.Water is a versatile solvent.Water has a high heat capacity.Water acts as a buffer.
- 17. Multiple ChoiceSmall insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?The insects are light enough so that they do not break the hydrogen bonds holding the water molecules togetherThe insects actually use their wings to hover slightly above the water's surface and they only skim it with their feetThe insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surfaceThe insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
- 18. Multiple ChoiceWhy does water move from the roots to the leaves of plants?Water is pushed by solutesCapillary action pulls the water molecules like a chainWater is pulled by gravityWater’s cohesion causes it to “pull” towards the leaves
- 19. Multiple ChoiceWater is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?Water expands as it freezes.Water is an excellent solvent.Water exhibits cohesive behavior.Water is able to moderate temperature.
- 20. Multiple ChoiceWhy does ice stay at the top of oceans instead of sinking to the bottom?Ice is colder than liquid water.Ice is less dense than liquid water.Ice is more dense than liquid water.Ice is warmer than liquid water.
- 21. Multiple ChoiceA florist places a bouquet of white carnations in water containing blue dye. After a time, the flowers turn blue. What process helped the carnations to change color?Specific heatSurface tensionCohesion and adhesion of water moleculesFormation of covalent bonds between hydrogen and oxygen molecules
- 22. Multiple ChoiceWater has a much higher specific heat than most other covalent compounds. What do you predict might happen if water had a low specific heat instead?Flooding would occur and animals would be forced to migrateHarmful organisms living in water would reproduce at a rapid rateOrganisms that are sensitive to changes in temperature would diePlants would not have enough water to effectively carry out photosynthesis
- 23. Multiple ChoiceWhich of the following characteristics of water is not a result of hydrogen bonding?adhesive strengthcapillaritycohesive strengthAll of the above are a result of hydrogen bonding.
- 24. Multiple Choice
Water is "sticky" because...
of cohesion.
of adhesion.
of the attraction between the positively charged hydrogen atoms and the negatively charged oxygen atom.
of capillary action.
- 25. Multiple Choice
Water drops being attracted to each other is an example of ____________.
capillary action
adhesion
specific heat index
cohesion
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