Q: Which of the following is a correct conversion factor for converting from grams to kilograms?

$$1\ \text{kg} = 1000\ \text{g}$$

Question 1

A patient’s temperature is measured as 102.2 °F. What is this temperature in degrees Celsius? Use the formula $$C = \frac{5}{9}(F - 32).$$

Accepted Answer

$$39.0\ ^\circ C$$

Question 2

Which of the following is a derived unit in the SI system?

Accepted Answer

Joule (J)

Question 3

A sample of gold has a mass of 96.5 g and a volume of 5.00 cm$$^3. $$What is the density of gold? Use $$	ext{Density} = \frac{	ext{mass}}{	ext{volume}}.$$

Accepted Answer

$$19.3\ 	ext{g/cm}^3$$

Question 4

Which of the following best describes a heterogeneous mixture?

Accepted Answer

Sand and iron filings

Question 5

Which of the following is the correct electron arrangement for a neutral atom of sodium (Na, atomic number 11)?

Accepted Answer

2, 8, 1

Question 6

Which of the following is a correct metric unit equivalent?

Accepted Answer

1 mL = 1 cm$$^3$$

Question 7

Which of the following elements is a transition metal?

Accepted Answer

Iron (Fe)

Question 8

A 50.0 g sample of water is heated from 25.0 °C to 75.0 °C. How much heat is absorbed? ($$c = 4.18\ 	ext{J/g}^\circ	ext{C}$$, $$q = mc\Delta T)$$

Accepted Answer

$$10,450\ 	ext{J}$$

Question 9

Which of the following statements about potential and kinetic energy is correct?

Accepted Answer

A stretched bow has potential energy.

Question 10

Which of the following is NOT a property of metals on the periodic table?

Accepted Answer

Brittle

Question 11

Which of the following is the correct number of significant figures in the measurement 0.004560 g?

Accepted Answer

4

Question 12

Which of the following best describes the trend in atomic radius across a period (left to right) on the periodic table?

Accepted Answer

Atomic radius decreases

Question 13

A neutral atom of chlorine has 17 protons and 18 neutrons. What is its mass number?

Accepted Answer

35

Question 14

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

Accepted Answer

Boiling water

Question 15

Which of the following is a correct conversion factor for converting from grams to kilograms?

Accepted Answer

$$1\ 	ext{kg} = 1000\ 	ext{g}$$

Question 16

Which of the following statements about subatomic particles is correct?

Accepted Answer

Neutrons have no charge

Question 17

Which state of matter has a definite volume but no definite shape?

Accepted Answer

Liquid

Question 18

Which of the following is the correct formula for calculating the energy required to change the temperature of a substance?

Accepted Answer

$$q = mc\Delta T$$

Question 19

Which of the following is a real-life example of a homogeneous mixture?

Accepted Answer

Vinegar

Question 20

Which of the following best describes the relationship between mass number and atomic number?

Accepted Answer

Mass number = number of protons + number of neutrons

Exam 1 Study Guide: Fundamental Concepts in GOB Chemistry

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