Scientific Method Chemistry

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?

• Acid has no effect on the health of this type of plant.

• High acidity is helpful to this type of plant.

• Low acidity is harmful to this type of plant.

• High acidity is harmful to this type of plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A process or series of steps used by scientists to solve a problem or answer a question. 

• scientific method

• recipe

• metric system

Tags

NGSS.MS-LS1-1

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method

• recipe

• data collection

• metric system

What step does every scientific experiment begin with?

• hypothesis

• question/problem

• procedures

• conclusion

List the steps of the scientific method

d

e

f

c

b

a

Results and Analysis

Observation

Conclusion

Hypothesis

Question

Experiment

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NGSS.MS-LS1-5

Conclusions based on an experiment are most likely to be accepted when

• they are consistent with experimental data and observations

•  they are derived from investigations having many experimental variables

•  scientists agree that only one hypothesis has been tested

•  hypotheses are based on one experimental design

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NGSS.MS-PS1-2

What is the first step in the scientific method?

• Identify the problem

• Conclusion

• Form a hypothesis

A testable answer to a scientific question

• Question

• Observation

• Hypothesis

• Experiment

Tags

NGSS.MS-LS1-5

This is the last step in the scientific method

• Draw a conclusion

• Record your data as results

• Share what you have learned with others

• Collaborate with others

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Which is NOT a step in the scientific method?

• Make observation

• Form a theory

• Collect data

• Form a hypothesis