Question 1

Which of the following best describes a chemical property of matter?

Accepted Answer

Flammability

Question 2

A sample of matter is observed to have a definite volume but no definite shape. Which state of matter is this sample in?

Accepted Answer

Liquid

Question 3

Which of the following is an example of a physical change?

Accepted Answer

Melting ice in a glass of water

Question 4

According to Dalton’s Atomic Theory, which statement is correct?

Accepted Answer

Atoms of different elements can combine to form compounds.

Question 5

Which of the following is a homogeneous mixture?

Accepted Answer

Salt dissolved in water

Question 6

A pure substance that cannot be broken down into simpler substances by chemical means is called a(n):

Accepted Answer

Element

Question 7

Which of the following is the correct scientific notation for 0.00056?

Accepted Answer

$$5.6 	imes 10$$^{-4}$$

Question 8

How many significant figures are in the measurement 0.00450 g?

Accepted Answer

3

Question 9

Which of the following is an example of a compound?

Accepted Answer

Water ($$H_2O)$$

Question 10

A patient’s blood sample is analyzed and found to have different properties in different locations of the sample. This sample is best classified as:

Accepted Answer

A heterogeneous mixture

Question 11

Convert 2500 mL to liters using the correct conversion factor.

Accepted Answer

$$2.5 	ext{ L}$$

Question 12

Which of the following is NOT a physical property?

Accepted Answer

Ability to react with acid

Question 13

A student measures the mass of a sample as 0.02030 g. How many significant figures does this measurement have?

Accepted Answer

4

Question 14

Which of the following best describes the difference between mass and weight?

Accepted Answer

Mass is constant regardless of location, weight changes with gravity.

Question 15

Which of the following is an example of a chemical change?

Accepted Answer

Burning gasoline in a car engine

Question 16

A nurse needs to convert a patient’s weight from pounds to kilograms. If the patient weighs 154 lb, what is the weight in kilograms? (Use $$1 	ext{ kg} = 2.20 	ext{ lb}$$, round to 2 significant figures)

Accepted Answer

$$70 	ext{ kg}$$

Question 17

Which of the following is a correct statement about mixtures?

Accepted Answer

Mixtures can be separated by physical means.

Question 18

Which of the following measurements contains 4 significant figures?

Accepted Answer

45.00

Question 19

A solution is prepared by dissolving 5.00 g of glucose in 100.0 mL of water. Which term best describes this solution?

Accepted Answer

Homogeneous mixture

Question 20

Which of the following is the correct way to express 0.000345 in scientific notation with the correct number of significant figures?

Accepted Answer

$$3.45 	imes 10$$^{-4}$$

Matter and Measurements: Foundations of Chemistry for Healthcare Professionals

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