2.1 Properties of Water Practice Flashcard Biology

Front

Attraction between molecules of the same substance ex. Water to water

Back

cohesion

Front

Dissolving substance in a solution

Back

solvent

Front

mixture of water and non-dissolved material

Back

suspension

Front

Why can a water strider skate along the top of a pond?

Back

Hydrogen bonds result in water cohesion (surface tension).

Answer explanation

Cohesion is where water molecules stick together because of hydrogen bonding.

Front

Attractions between water molecules are called ....

Back

Hydrogen bonds

Front

The attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attraction to other water molecules.

Back

cohesion

Answer explanation

Cohesion is where water molecules stick together because of hydrogen bonding.

Front

Why is water considered a universal solvent?

Back

It dissolves most substances.

Answer explanation

A solvent is a liquid that allows other substances to dissolve into it. Remember, most chemical reactions happen in solution (dissolved in a liquid).

Front

The water is sticking to the underside of the leaf because of...... Options: Adhesion, Cohesion, Capillary action, Subversion

Back

Adhesion

Answer explanation

Make sure you read this question closely. It asks why it is sticking to the LEAF - that is an additional surface so that is ADHESION.

Front

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood? Options: strongly acidic, slightly acidic, strongly basic, slightly basic

Back

slightly basic

Front

The table shows the pH of several solutions. Which solution is the most acidic? Options: vinegar, milk, water, bleach

Back

vinegar