The properties of water

What does it mean when a molecule is said to be "polar"?

• When there is an EVEN distribution of electrons between its atoms.

• When there is an UNEVEN distribution of electrons between its atoms.

• when it is negatively charged

• When it has no charge.

How do hydrogen bonds between water molecules occur?

• When Hydrogen molecules are attracted to other hydrogen molecules

• When oxygen molecules are attracted to other oxygen molecules.

• When the H + charge is attracted to 0- charge of another water molecule.

• When the H + charge is attracted to 0- charge of the same water molecule.

Why is water such a good solvent?

• It can dissolve oil

• Because of its polarity

• It can dissolve ionic compounds and other polar molecules

• It is not a good solvent

An acid is a compound that forms ____ ion solutions. A base forms _____ ion solutions.

• Hydrogen / Hydrogen

• Hydroxide / Hydroxyde

• Oxide / Hydroxide

• Hydrogen / Hydroxyde

The spider can stand on water due to the _____ that creates surface tension

• cohesion

• adhesion

• capillarity

• polarity