pH Scale
Vocabulary
Scientific Method
Graphing/Measurement
Lab Safety
100
Pure water would sit here on the pH scale:
7
100
This type of data describes qualities or characteristics and is non-numerical:
Qualitative data
100
What is the first step of a scientific investigation?
State the problem
100
Measure the specimen below in millimeters.
25mm
100
This type of foot-wear is recommended during lab:
Closed-toe shoes
200
What is the range of acids on the pH scale?
Less than 7
200
Remember to read at the bottom of the curved line or:
Meniscus
200
In one of his experiments with pea plants, Chris noted that 75% of the offspring of a certain cross had green pea pods. This statement would be considered
Observation
200
How many mL of liquid is seen here?
14mL
200
Before starting a lab, students should place their backpacks:
Under their tables, or away from walk paths.
300
What is the range of bases on the pH scale?
Value greater than 7
300
In order to consider an experiment valid, it must be _____ , AND ________.
The experiment must be repeated, and yield similar results
300
In an experiment, the setup that provides a basis of comparison is known as:
a control
300
Is the independent variable graphed on the X or Y axis?
X axis
300
Consider all lab chemicals and specimens to be:
Dangerous
400
A pH scale is a method used to determine if the chemical property of a solution is:
an acid or a base
400
This type of data deals with numbers that can be counted or measured:
Quantitative data
400
Determine the independent variable in this experiment.
"The height of bean plants depends on the amount of water they receive."
Water they receive
400
On the data table below, identify the dependent variable:
Number of pups
400
I should dispose of all waste materials only:
As directed by my teacher
500
Keeping pH values at the proper level is part of:
homeostasis
500
"The sky is cloudy, because it is going to rain." Is an example of:
Assumption/Inference
500
Determine the dependent variable in this experiment.
Four groups of rats are first massed and then fed identical diets except for the amount of vitamin A they receive. Each group gets a different amount. After 3 weeks on the diet, the rats’ masses are measured again to see if there has been a decrease.
Rat mass
500
What is the percentage of resistant bacteria in 1991?
5
500
If I break glass ware during a lab I should first:
Stop and tell the teacher