Question 1

Which of the following best describes 'matter' as defined in chemistry?

Accepted Answer

Anything that has mass and occupies volume.

Question 2

A scientist is measuring the temperature of a chemical reaction. Which type of property is being measured?

Accepted Answer

Quantitative property

Question 3

Which of the following is NOT considered a base SI unit?

Accepted Answer

Liter ($$L)$$

Question 4

A student records the mass of a sample as $$2.35 	imes 10$$^{-3}$$ grams. Which decimal prefix best represents this value?

Accepted Answer

Milli ($$10^{-3})$$

Question 5

Which of the following is an example of a derived SI unit?

Accepted Answer

Cubic meter ($$m^3)$$

Question 6

A chemical is defined as:

Accepted Answer

A substance that always has the same composition and properties wherever found.

Question 7

Which step in the scientific method involves making a tentative explanation for an observation?

Accepted Answer

Hypothesis

Question 8

A nurse measures a patient's blood pressure and records it as 120 mmHg. This measurement is an example of:

Accepted Answer

Quantitative analysis

Question 9

Which of the following is the correct scientific notation for 0.0000456?

Accepted Answer

$$4.56 	imes 10$$^{-5}$$

Question 10

Which of the following statements about SI units is TRUE?

Accepted Answer

SI units include both base units and derived units.

Question 11

A scientist observes that a chemical reaction produces a color change. This observation is best classified as:

Accepted Answer

Qualitative

Question 12

Which of the following is the correct order of steps in the scientific method?

Accepted Answer

Observation, Hypothesis, Experiment, Model, Further Experiment

Question 13

If a measurement is recorded as $$1.23 	imes 10$$^{4}$$ meters, what is the value in kilometers?

Accepted Answer

$$12.3$$ kilometers

Question 14

Which of the following is a physical property of matter?

Accepted Answer

Color

Question 15

A sample has a mass of $$0.005$$ kilograms. Express this mass in grams using SI prefixes.

Accepted Answer

$$5$$ grams

Question 16

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

Accepted Answer

Conclusion

Question 17

A doctor measures a patient's temperature as $$37.0$$ degrees Celsius. Which SI base unit is used for this measurement?

Accepted Answer

Kelvin ($$K)$$

Question 18

Which of the following is a correct example of a qualitative property?

Accepted Answer

The solution is blue.

Question 19

Which of the following is the correct scientific notation for $$123,000$$?

Accepted Answer

$$1.23 	imes 10$$^{5}$$

Question 20

A nurse needs to administer $$0.25$$ liters of saline solution. How many milliliters is this?

Accepted Answer

$$250 mL$$

Introduction to Chemistry: Matter, Measurement, and Scientific Method

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