Properties of Water
Which is a cause of polarity in water molecules?
high electronegativity difference between oxygen and hydrogen
Which best explains why water has a high specific heat?
Hydrogen bonds increase the amount of energy that is required for the temperature to change.
Which statement would be true about a water molecule if it had a linear shape?
It would be a nonpolar molecule.
Which statement is true about the electrons in each polar bond of a water molecule?
They are more attracted by the oxygen atom than by the hydrogen atom.
Which statement best describes how water's properties relate to its functions in a human's biological systems?
Water absorbs a lot of energy from the skin due to its high specific heat.
Water can resist a greater external force than ethanol can. Which statement best describes this difference?
Water has greater surface tension than ethanol.
Which best explains why blood and the cytoplasm of cells are mainly composed of liquid water?
Water is an important transport and reaction medium.
Which example best shows that the chemistry of water is helpful to plants?
Water's polarity causes cohesion that pulls other water molecules up through a plant.
Which is the best example of water regulating an organism's body temperature?
a jogger sweating after a run
Water molecules are polar because the
water molecule has a bent shape.