Lab Safety
Lab Equipment
Measurement
Scientific Method
Experimental Design
100
Who should you tell immediately when something breaks during a lab?
The teacher
100
What is the following lab equipment called?
Graduated Cylinder
100
What tool do we use to measure length in the lab?
A: balance scale
B: graduated cylinder
C: Ruler
D: Stopwatch
C: Ruler
100
What is the first step of the Scientific Method process?
Making observations
100
A specific, testable prediction is called a ____?
Hypothesis
200
to put out small fires.
200
What is this tool called?
A triple beam balance
200
What type of system of measurement do scientists use, as well as the major part of the world (except United States of America)?
Metric system
200
What part of an experiment is used as a standard of comparison?
the control group
200
Finish the phrase:
If____________, Than _______?
If IV, than DV
300
What is the acronym for remembering how to use a fire extinguisher in case of emergencies?
P.A.S.S.
300
What is a petri dish used for?
Used to grow bacteria and fungi
300
What is the formula to calculate density?
D = Mass/Volume
300
Three tropical plants are kept at different humidity levels inside of a greenhouse for 10 weeks. Three plants are also left outside in normal conditions. The height of the plants is measured once a week. Which group of plants is considered the control group?
The three plants left outside of the greenhouse
300
What is the difference between scientific law vs. theory?
A scientific law attempts to DESCRIBE a scientific phenomenon.
A theory attempts to EXPLAIN a scientific phenomenon.
400
What does this symbol mean?
Oxidizer, severe fire hazard and promotes combustion in other materials.
400
What is this piece of equipment AND what is its function?
Erlenmeyer flask.
Used to measure and contain liquid, particularly useful to gently stir the content inside the liquid as it has a narrow neck and slanted sides.
400
A student needs to determine the density of an unknown rock sample by dropping the rock into
a graduated cylinder containing water. The original volume in the graduated cylinder is 20.0
mL. The student then drops the rock sample into the graduated cylinder and determines the
new volume to be 30.0 mL. If the mass of the rock is determined to be 18 grams, what is the
density of this sample?
1.8 g/mL
400
What is the very last step that scientists do to share their data with other scientists all across the world?
Publish their work in a peer review process.
400
Label the following statements as either QUALItative or QUANtitative.
A: There are 5 zebras.
B: The zebras are black and white.
A: QUANtitative
B: QUALItative
500
What does this chemical symbol mean?
A corrosive substance.
500
What is this equipment?
a compound light microscope.
500
Why does oil float on top of water? Hint: think about density
Oil is LESS dense than water. Anything that has a density LESS than water, will float. Anything that has a density MORE than water, will sink.
500
Recall Francesco Redi's Experiment.
What was the independent variable?
What was the dependent variable?
What were some constants?
What was the control group?
What was the experimental group?
Independent variable: covering of the jar
Dependent variable: number/presence of maggots.
Constants: type of jar, environment, type of meat, etc.
Control group: jar with no covering
Experimental group: jar with covering
500
What are the 6 steps to the Scientific Method (also called Experimental Design) process?
1: Make observations
2: Ask a question
3: Form a hypothesis
4:: Test hypothesis by conducting experiment
5: Collect and Analyze Data
6: Draw a conclusion