Variables
What is the independent variable in an experiment?
-The "If" statement in the hypothesis
-The ONE variable you change
What tool do you use to measure mass and what unit do you use?
Triple Beam Balance/ grams
Find the volume of a cube with these measurements:
L- 2.0 cm, H- 3.0 cm, W- 1.0 cm
6.0 cm
56.43
56.4
When do you use a bar graph?
To compare
What is the dependent variable in an experiment?
-The "then" statement in the hypothesis
-What changes because of the independent variable
What do you use to measure volume, and what units do you use?
Graduated Cylinder/ mL
What is the meniscus and how do you read it?
-The curve of the liquid in the graduated cylinder
-Look at the surface at eye level, measure at the BOTTOM of the curve
38.19
38.2
What could be a hypothesis for:
A Chemistry student wants to conduct a study of how the amount of Oxygen in the air makes students score higher on their tests. She sets up two classrooms, one with highly oxygenated air, and one with regularly oxygenated air and gives them both the same test.
If:
Then:
If:
Then:
What is the constant variable in an experiment?
Every other variable.
What do you use to measure length?
Ruler/ Meter, Centimeter
What is the volume of the item:
Original: 5.0 mL
After object place in graduated cylinder: 6.0 mL
1.0 mL
23.00001
23.0
step-by-step recipe for your science experiment
Procedure
A Chemistry student wants to conduct a study of how the amount of Oxygen in the air makes students score higher on their tests. She sets up two classrooms, one with highly oxygenated air, and one with regularly oxygenated air and gives them both the same test.
What are the Independent and Dependent variables?
IV: Oxygen in the air
DV: Test scores
What do you use to measure Temperature, and what units do you use?
Thermometer/ Celsius
What is the volume of the item:
Original: 5.0 mL
After object place in graduated cylinder: 8.2 mL
3.2 mL
56.26
56.3
Educated guess about how things work
Hypothesis
A Chemistry student wants to conduct a study of how the amount of Oxygen in the air makes students score higher on their tests. She sets up two classrooms, one with highly oxygenated air, and one with regularly oxygenated air and gives them both the same test.
Name a Constant Variable from above
same test, same amount of students, temperature...
What system of measurement do we use in science?
Metric System
Find the volume of a cube with these measurements:
L- 4.2 cm, H- 3.0 cm, W- 5.0 cm
63.0 cm
120.789
120.8
Amount of mass in a given volume
Denisty