• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/18

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

18 Cards in this Set

  • Front
  • Back

What makes water polar?

Water has a positive and negative end, separated by a distance. Each molecule has two slightly positive hydrogens, and a slightly negative oxygen.

What types of substances can water dissolve?

Polar molecules, ions and ionic compounds. (E.g. glucose as a Pilar molecule, and sodium chloride as an ionic compound)

His does water acting as a transport medium assist plants?

Water transports minerals in the xylem, and sucrose and amino acids in the phloem.

Water cannot dissolve what type if molecule?

Non polar, such as lipids.

In what biochemical reactions does water act as a metabolite?

Condensation and hydrolysis e.g. maltose+water=glucose+glucose and glucose+fructose=sucrose+water.

What does water having a high specific heat capacity mean?

That a lot of energy is needed to raise 1g of water by 1°C (specifically, 4.186J/g°C).

Why is the specific heal capacity of water high?

Because water has hydrogen bonds, which restrict the movement of molecules. A lot of energy is needed to break these bonds, and thus increase the temperature.

What is is a useful feature of water having a high specific heat capacity, in aquatic habitats?

That significant temperature fluctuations are prevented, which provides aquatic organisms with stability in their habitat.

Where is water having a high latent heat of vaporisation useful?

In human temperature control, as when sweat evaporates, the body cools.

In plants, how are the cohesive properties of water useful?

Water sticks together in columns, which means it can be pulled-up xylem vessels.

How is the surface tension of water useful?

In a pond, this property means that insects (e.g. pond skaters) can shift across the top of a pond.

How come the surface tension of water is made possible?

Due to its cohesive properties.

At what temperature is water most dense?

4°C.

Name on if the few substances which is more dense than water, as a liquid.

Mercury.

How is water's high density useful for aquatic life?

Is supports aquatic organisms.

How come ice is less dense than liquid water?

Water molecules in ice bond in a tetrahedral arrangement, due to hydrogen bonds. This created spaces between molecules, giving ice a low density.

How is the low density of ice useful?

It can provide insulation to aquatic life, if a sheet of ice forms on a pond.

How is the transparency of water useful?

It enables plants underwater to photosynthesise.