Solutions (Alan's Notes)

Question 0

Define Insoluble.

Answer 0

Incapable of being dissolved.

Question 1

Define soluble.

Answer 1

Capable of being dissolved or liquefied.

Question 2

Define solute.

Answer 2

The dissolved matter in a solution.

Question 3

Define solvent.

Answer 3

A substance that dissolves another to form a solution.

Question 4

Define solution.

Answer 4

A mixture where the particles of a solute are homogeneously spread amongst the particles of a solvent.

Question 5

Define Chemical Compound.

Answer 5

A chemical compound consists of two or more elements, chemically combined. Compounds cannot be separated by physical means while mixtures can be separated.

Question 6

Define electrolyte.

Answer 6

A substance that dissolves and conducts and electric current and produces free ions in solution.

Question 7

Define strong electrolyte.

Answer 7

• When dissolved in water these solutes are entirely present as independent mobile ions. They are able to carry a strong electric current.
• Even essentially insoluble ionic compounds can be strong electrolytes because when added to water the small amount that does dissolve is completely ionized.
• A dilute solution can be a strong electrolyte.
• A vinegar is very soluble and highly concentrated but it is a weak electrolyte.

Question 8

Define Weak Electrolyte.

Answer 8

When dissolved in water solutes are partly present as independent mobile ions. These electrolytes carry a weak electric current. The solution may be concentrate but be a weak electrolyte.

Question 9

Define non electrolytes.

Answer 9

Produce no ions and carry no current. Dissolve in water.

Question 10

Acid-base-electrolyte rule.

Answer 10

• STRONG acid = STRONG electrolytes

* weak acid or base = weak electrolytes

Question 11

What is the concentration of a solution?

Answer 11

The amount of solute dissolved in a given amount of solution or solvent.

Question 12

What is a concentrated solution?

Answer 12

One in which a large amount of solute is dissolved in a certain volume of solvent.