Question 1

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

Accepted Answer

Flammability

Question 2

A sample of matter is uniform throughout and can be separated into two substances by a physical process. How should this sample be classified?

Accepted Answer

Homogeneous mixture (solution)

Question 3

Which of the following statements best describes the Law of Constant Composition?

Accepted Answer

A compound always contains the same proportion of elements by mass.

Question 4

Which separation technique would be most effective for separating a mixture of sand and salt water?

Accepted Answer

Filtration

Question 5

A student measures the mass of a metal cube as 15.0 g and its volume as 2.0 cm$$^3. $$What is the density of the metal?

Accepted Answer

$$7.5\ \mathrm{g/cm^3$}$$

Question 6

Which of the following is an intensive property?

Accepted Answer

Density

Question 7

Convert $$25.0\ ^\circ\mathrm{C} to $$Kelvin.

Accepted Answer

$$298.15\ \mathrm{K}$$

Question 8

Which of the following is NOT a base SI unit?

Accepted Answer

Liter

Question 9

A cyclist at the top of a hill has which type of energy at its maximum?

Accepted Answer

Potential energy

Question 10

Which of the following numbers has four significant figures?

Accepted Answer

$$1.030 	imes 10^4$

Question 11

A student records the following measurements for the mass of a sample: 2.51 g, 2.50 g, 2.52 g. The true mass is 2.00 g. Which statement is correct?

Accepted Answer

The measurements are precise but not accurate.

Question 12

Which of the following is a physical change?

Accepted Answer

Melting of ice

Question 13

Which of the following best describes a heterogeneous mixture?

Accepted Answer

A mixture with variable composition throughout

Question 14

How many milliliters are in 0.250 liters?

Accepted Answer

$$250\ \mathrm{mL}$$

Question 15

Which of the following is an example of a compound?

Accepted Answer

Water

Question 16

A solution is prepared by dissolving table salt in water. Which method would best separate the salt from the water?

Accepted Answer

Distillation

Question 17

Which of the following is the correct equation for converting Celsius to Fahrenheit?

Accepted Answer

$$^\circ\mathrm{F} = \frac{9}{5}(^\circ\mathrm{C}) + 32$$

Question 18

A sample of gold has a mass of 38.64 g and a volume of 2.00 cm$$^3. $$What is its density?

Accepted Answer

$$19.32\ \mathrm{g/cm^3$}$$

Question 19

Which of the following is a derived SI unit?

Accepted Answer

Liter

Question 20

Which of the following best describes the difference between an element and a compound?

Accepted Answer

Elements cannot be decomposed into simpler substances, compounds can.

Chapter 1: Introduction to Matter, Energy, and Measurement – Study Notes

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