water Flashcards

(12 cards)

1
Q

are water molecules polar or non-polar?

A

polar

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2
Q

what bonds are formed between water molecules as a result of being polar?

A

hydrogen

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3
Q

why is water described as a solvent?

A

because it readily dissolves ions and polar molecules

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4
Q

what is cohesion?

A

cohesion is the force of attraction between water molecules that means they stick to each other.

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5
Q

what atom is positively charged in water?

A

hydrogen

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6
Q

what atom is negatively charged in water?

A

oxygen

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7
Q

how does the polarity of water cause cohesion?

A

cohesion occurs when the positively charged hydrogen atom is attracted to the negatively charged oxygen atom, causing a hydrogen bond to form between the two.

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8
Q

why is water described as a coolant?

A

because water can provide a cooling effect through evaporation.

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9
Q

why is water described as a buffer for changes in temperature?

A

because water has a high specific heat capacity, so a lot of energy is required for it to change temperature.

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10
Q

is ice less dense or more dense than liquid water?

A

less dense

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11
Q

how can water act as a habitat for organisms?

A

it has surface tension

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12
Q
A
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