Question 1

Which step of the scientific method is best represented by a nurse recording a patient's blood pressure using a sphygmomanometer, as shown in the image?

Accepted Answer

Making an observation

Question 2

A scientist observes that patients with high blood pressure often have diets high in sodium. What is the next logical step in the scientific method?

Accepted Answer

Formulate a hypothesis about sodium and blood pressure

Question 3

Which of the following best describes a scientific law?

Accepted Answer

A phenomenon that is provably true and universally accepted

Question 4

Which of the following is an example of a quantitative observation?

Accepted Answer

The patient's blood pressure is 140/90 mmHg

Question 5

A doctor proposes: 'If a patient reduces sodium intake, their blood pressure will decrease.' What component of the scientific method does this statement represent?

Accepted Answer

Hypothesis

Question 6

Which of the following best represents the correct order of steps in the scientific method?

Accepted Answer

Observation → Hypothesis → Experiment → Data Analysis → Conclusion → Peer Review & Publish

Question 7

Which of the following statements is a hypothesis?

Accepted Answer

Drinking coffee at night keeps me awake.

Question 8

A scientist collects data showing that patients who reduce sodium intake have lower blood pressure. What is the next step?

Accepted Answer

Draw a conclusion

Question 9

Which of the following is a qualitative observation?

Accepted Answer

The patient looks flushed

Question 10

Which statement about scientific theories is correct?

Accepted Answer

They are testable explanations supported by a large body of evidence

Question 11

A researcher wants to test if a new medication lowers blood pressure. Which step should come immediately after forming a hypothesis?

Accepted Answer

Design and conduct an experiment

Question 12

Which of the following is an example of falsifiability in the scientific method?

Accepted Answer

A theory that can be proven incorrect by new evidence

Question 13

A scientist observes that a chemical reaction always produces the same amount of product under the same conditions. This is best described as:

Accepted Answer

A law

Question 14

Which of the following best describes peer review in the scientific method?

Accepted Answer

Publishing results for evaluation by other scientists

Question 15

A patient’s blood pressure is measured at 150/95 mmHg. Which type of observation is this?

Accepted Answer

Quantitative

The Scientific Method in Chemistry

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