Q: Which of the following is a correct conversion factor for converting inches to centimeters?

$$1\ \text{in} = 2.54\ \text{cm}$$

Q: Which of the following is the correct formula for specific heat?

$$q = m \times s \times \Delta T$$

Question 1

Which of the following best defines chemistry?

Accepted Answer

The study of the composition, structure, properties, and changes of matter.

Question 2

Which of the following is a chemical property?

Accepted Answer

Reactivity with oxygen

Question 3

A sample of matter has a definite volume but no definite shape. Which state of matter is this?

Accepted Answer

Liquid

Question 4

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

Accepted Answer

Dissolving sugar in water

Question 5

Which of the following is a pure substance?

Accepted Answer

Copper

Question 6

What is the correct symbol for the element potassium?

Accepted Answer

K

Question 7

Which of the following is a compound?

Accepted Answer

Sodium chloride (NaCl)

Question 8

A student measures the mass of a sample three times and gets 12.34 g, 12.35 g, and 12.33 g. What is the best way to report the mass with the correct number of significant figures?

Accepted Answer

12.34 g

Question 9

Convert 0.000215 to scientific notation.

Accepted Answer

$$2.15 	imes 10$$^{-4}$$

Question 10

Which of the following is the correct relationship for density?

Accepted Answer

$$d = \frac{m}{V}$$

Question 11

A sample of gold has a mass of 38.6 g and a volume of 2.00 mL. What is the density of gold in $$g/mL$$?

Accepted Answer

$$19.3\ g/mL$$

Question 12

Which of the following is a correct conversion factor for converting inches to centimeters?

Accepted Answer

$$1\ 	ext{in} = 2.54\ 	ext{cm}$$

Question 13

A patient weighs 154 lb. What is the mass in kilograms? ($$1\ 	ext{kg} = 2.205\ 	ext{lb})$$

Accepted Answer

$$69.8\ 	ext{kg}$$

Question 14

Which of the following is the correct formula for converting Celsius to Kelvin?

Accepted Answer

$$K = ^\circ C + 273.15$$

Question 15

A 50.0 g sample of water is heated from 20.0°C to 70.0°C. How much heat (in cal) is absorbed? (Specific heat of water = $$1.00\ 	ext{cal/g}^\circ	ext{C})$$

Accepted Answer

$$2500\ 	ext{cal}$$

Question 16

Which of the following is an example of a heterogeneous mixture?

Accepted Answer

Chocolate chip cookies

Question 17

Which of the following statements about elements and compounds is correct?

Accepted Answer

Compounds are made of two or more elements chemically combined in fixed ratios.

Question 18

A solution is prepared by dissolving 5.00 g of NaCl in enough water to make 250.0 mL of solution. What is the concentration of NaCl in $$g/mL$$?

Accepted Answer

$$0.0200\ g/mL$$

Question 19

Which of the following is the correct formula for specific heat?

Accepted Answer

$$q = m 	imes s 	imes \Delta T$$

Ch. 1 Lecture Notes: Measurement and the Properties of Matter

Study Guide - Practice Questions

Study Guide - Flashcards