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- 1. Multiple Choice
The chemical compound of water isHOH2OH3OHO2 - 2. Multiple ChoiceWater is a universal solventTrueFalse
- 3. Multiple ChoicePure water has aNeutral pHNegative pHPositive pHBoth Negative and Positive pH
- 4. Multiple ChoiceA Compound that is being dissolved is called aSolutionSoluteSolventSuspension
- 5. Multiple ChoiceA solvent is...substance into which the solute dissolvesa compound being dissolveda substance that does not dissolveNone of the above
- 6. Multiple ChoiceWhat is water made of?WaterLiquidHydrogen and oxygenBlue
- 7. Multiple ChoiceWhat is an example of something that dissolves in waterYourselfSugarA rockA boat
- 8. 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
- 9. 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
- 10. Multiple ChoiceAttractions between water molecules are calledCovalent bondsIonic bondsPolar bondsHydrogen bonds
- 11. Multiple ChoiceWhich end of the water molecule has a slightly positive charge?the oxygen endthe hydrogen endboth ends are slightly positiveneither end is positive
- 12. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 13. 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
- 14. Multiple ChoiceWhich types of compounds dissolve easily in water?Polar and NonpolarPolar and IonicNonpolar and IonicCovalent and Nonpolar
- 15. Multiple ChoiceFish need oxygen from which molecule?O2The O in H2OThe oxygen from a tankNone of the above
- 16. Multiple ChoiceWhich of these would LEAST affect turbidity?AlgaeFish fecesSaltGasoline
- 17. Multiple ChoiceAcids have more what?OH ionsOH- ionsH+ ionsAll of the above
- 18. Multiple ChoicePhosphates are important to life but can also cause what deadly phenomenon to occur?More oxygen availabilityMore sunlight availabilityFish thrivingEutrophication
- 19. Multiple ChoiceWhich type of water makes soaps not work?HardSoft
- 20. Multiple ChoiceWhat do chemists add to soap to allow it to work in hard water?nitrogenphosphatesArtificial scentsartificial colors
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