A&P 2 lab slides

Question 1

Solution

Answer 1

A liquid containing a dissolved substance

Question 2

Solvent

Answer 2

Substance (molecule) with the ability to dissolve other substances (solutes) to form a solution

Question 3

Solute

Answer 3

substance being dissolved

Question 4

Suspension

Answer 4

a heterogeneous mixture in which the solute particles do not dissolve but get suspended throughout the bulk of the medium

Question 5

Colloid

Answer 5

A mixture in which very small particles of one substance are distributed evenly throughout another substance

Question 6

pH

Answer 6

The measure of how acidic, neutral or alkaline something is

Question 7

Acidic pH

Answer 7

Less than 7

Question 8

Alkaline (Basic) pH

Answer 8

Greater than 7

Question 9

Neutral pH

Answer 9

Exactly equal to 7

Question 10

Buffer

Answer 10

maintains the pH making it stable within a certain range

Question 11

Litmus paper

Answer 11

a pH indicator that changes color

Question 12

Human body pH

Answer 12

7.35 to 7.45

Question 13

Human body temperature in Celsius and Fahrenheit

Answer 13

37 C or 98.6 F

Question 14

Boiling point of water in Celsius and Fahrenheit

Answer 14

100 C or 212 F

Question 15

Freezing point of water in Celsius and Fahrenheit

Answer 15

0 C or 32 F

Question 16

Independent variable

Answer 16

the parameter that is pre-determined / already known before conducting the experiment

Question 17

Dependent variable

Answer 17

The parameter that is being measured

Question 18

Control variables

Answer 18

The parameter or parameters that are maintained the same between different trials of an experiment

Question 19

Experimental Control

Answer 19

an experiment in which all variable factors have been kept constant and which is used as a standard of comparison to the experimental component in a controlled experiment