Q: Which of the following is a correct sequence for converting $$1.25$$ miles to rods, given $$1 \ \mathrm{mile} = 1760 \ \mathrm{yards}$$ and $$5 \ \mathrm{yards} = 1 \ \mathrm{rod}$$?

$$1.25 \ \mathrm{miles} \times \frac{1760 \ \mathrm{yards}}{1 \ \mathrm{mile}} \times \frac{1 \ \mathrm{rod}}{5 \ \mathrm{yards}}$$

Question 1

Which of the following best describes the difference between a scientific law and a scientific theory?

Accepted Answer

A law is a statement of what happens; a theory is a statement of why something happens.

Question 2

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

Accepted Answer

The temperature increased by $$5 \ ^\circ \mathrm{C}.$$

Question 3

Experiments in science are primarily designed to:

Accepted Answer

Verify or disprove hypotheses.

Question 4

Which statement about hypotheses and theories is correct?

Accepted Answer

A hypothesis is an untested idea; a theory is a tested, broad explanation.

Question 5

Given the following conversions: $$5 \ \mathrm{yards} = 1 \ \mathrm{rod}$$, $$1 \ \mathrm{mile} = 1760 \ \mathrm{yards}$$, how many rods are in $$1.25$$ miles?

Accepted Answer

$$400 \ \mathrm{rods}$$

Question 6

Which of the following best describes a qualitative observation?

Accepted Answer

The solution is cloudy.

Question 7

A student proposes that increasing the temperature will increase the rate of a chemical reaction. This statement is best classified as:

Accepted Answer

A hypothesis

Question 8

Which of the following is NOT a characteristic of a scientific theory?

Accepted Answer

It is a statement of what happens under certain conditions.

Question 9

If a scientist observes that a chemical reaction produces a color change and measures the temperature increase, which type of observations are being made?

Accepted Answer

Qualitative and quantitative

Question 10

Which of the following best illustrates the process of scientific inquiry?

Accepted Answer

Making observations, forming a hypothesis, conducting experiments, and developing a theory.

Question 11

A student measures the mass of a sample as $$3.50 \ \mathrm{g}$$ and the volume as $$1.40 \ \mathrm{mL}. $$What is the density of the sample?

Accepted Answer

$$2.50 \ \mathrm{g/mL}$$

Question 12

Which of the following is a correct sequence for converting $$1.25$$ miles to rods, given $$1 \ \mathrm{mile} = 1760 \ \mathrm{yards}$$ and $$5 \ \mathrm{yards} = 1 \ \mathrm{rod}$$?

Accepted Answer

$$1.25 \ \mathrm{miles} 	imes \frac{1760 \ \mathrm{yards}}{1 \ \mathrm{mile}} 	imes \frac{1 \ \mathrm{rod}}{5 \ \mathrm{yards}}$$

Question 13

Which of the following statements is true regarding scientific laws?

Accepted Answer

They describe what happens under specific conditions.

Question 14

A scientist collects data on the color, shape, and size of a mineral sample. This is an example of:

Accepted Answer

Qualitative observation

Question 15

Which of the following is the best example of a quantitative result from an experiment?

Accepted Answer

The solution's temperature increased by $$8 \ ^\circ \mathrm{C}.$$

Question 16

Which of the following is NOT a step in the scientific method?

Accepted Answer

Stating a law before making observations.

Question 17

A theory differs from a hypothesis in that a theory:

Accepted Answer

Is a broad explanation supported by evidence.

Question 18

Which of the following best describes the role of experiments in science?

Accepted Answer

They are designed to test hypotheses.

Question 19

A student observes that a reaction produces $$15 \ \mathrm{mL} of $$gas. This is an example of:

Accepted Answer

Quantitative observation

Fundamental Concepts in Scientific Method and Unit Conversions

Study Guide - Practice Questions

Study Guide - Flashcards