POP Quiz: Water and Its Properties

What percentage of the human body is made up of water?

• 30-40%

• 40-50%

• 60-70%

• 70-80%

What is the significance of water's high specific heat?

• It allows water to freeze quickly.

• It helps water to evaporate easily.

• It enables water to absorb and release heat slowly.

• It makes water a poor conductor of electricity.

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What is the relationship between ice and liquid water in terms of density?

• Ice is denser than liquid water.

• Ice and liquid water have the same density.

• Ice is less dense than liquid water.

• Ice density varies with temperature.

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What property of water allows it to stick to itself?

• Adhesion

• Cohesion

• Solvent properties

• Density

What is the angle between the bonds in a water molecule?

• 90°

• 104.5°

• 120°

• 180°

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What is the shape of a water molecule?

• Linear

• Bent

• Circular

• Square

How many pairs of unshared electrons does the oxygen atom in a water molecule carry?

• One

• Two

• Three

• Four

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What is the charge on the hydrogen end of a water molecule?

• Partial negative charge

• Full negative charge

• Partial positive charge

• Neutral charge

What is the result of the oxygen atom hogging electrons in a water molecule?

• The oxygen end becomes positively charged

• The hydrogen end becomes negatively charged

• The oxygen end becomes partially negative

• The molecule becomes non-polar

What is the effect of water's polarity on its molecules?

• They repel each other

• They attract each other

• They become non-polar

• They dissolve in oil