Question 1

Which of the following is the correct formula for density?

Accepted Answer

$$Density = \frac{Mass}{Volume}$$

Question 2

A student measures a liquid and finds its mass to be $$25.0\ g$$ and its volume to be $$20.0\ mL. $$What is the density of the liquid?

Accepted Answer

$$1.25\ g/mL$$

Question 3

Which of the following best describes the Kinetic Molecular Theory for gases?

Accepted Answer

Gas particles are in constant random motion and collisions between particles are elastic.

Question 4

If a sample of gas is heated at constant pressure, what happens to its volume?

Accepted Answer

The volume increases.

Question 5

Which of the following is the correct relationship between pressure and volume for a gas at constant temperature (Boyle's Law)?

Accepted Answer

$$P \propto \frac{1}{V}$$

Question 6

A block of metal has a mass of $$54.0\ g$$ and a volume of $$18.0\ cm^3$. Will it float in water? (Density of water = 1.00$$\ $$g/cm^3)$$

Accepted Answer

No, because its density is greater than water.

Question 7

Which of the following statements about significant figures is correct when multiplying or dividing measurements?

Accepted Answer

The answer should have as many significant figures as the measurement with the fewest significant figures.

Question 8

Which of the following best describes the difference between an atom and an ion?

Accepted Answer

Atoms are neutral, ions have a positive or negative charge.

Question 9

Which element is represented by the atomic number 17?

Accepted Answer

Chlorine

Question 10

Which of the following is the correct electron configuration for a neutral atom of oxygen ($$Z=8$$)?

Accepted Answer

$$1s^2$$\ $$2s^2$$\ $$2p^4$$

Question 11

Which of the following best explains why metals are good conductors of electricity?

Accepted Answer

Metals have loosely held valence electrons that can move freely.

Question 12

Which of the following is the correct formula for the compound formed between sodium and chlorine?

Accepted Answer

$$NaCl$$

Question 13

Which of the following is a property of ionic compounds?

Accepted Answer

They conduct electricity when dissolved in water.

Question 14

Which of the following best describes the trend in atomic radius across a period in the periodic table?

Accepted Answer

Atomic radius decreases from left to right.

Question 15

A sample of gas at $$2.0\ atm$$ and $$300\ K$$ occupies a volume of $$4.0\ L. $$What will the volume be if the pressure is increased to $$4.0\ atm at $$constant temperature?

Accepted Answer

$$2.0\ L$$

Question 16

Which of the following is the correct Lewis structure for carbon dioxide ($$CO_2$$)?

Accepted Answer

$$O=C=O$$

Question 17

Which of the following is the correct formula for calculating the energy of a photon?

Accepted Answer

$$E = h 
u$$

Question 18

Which of the following best describes the difference between a covalent bond and an ionic bond?

Accepted Answer

Covalent bonds involve the sharing of electrons, while ionic bonds involve the transfer of electrons.

Question 19

Which of the following is the correct formula for calculating the frequency of light given its wavelength?

Accepted Answer

$$
u = \frac{c}{\lambda}$$

Question 20

Which of the following best describes the trend in electronegativity across a period in the periodic table?

Accepted Answer

Electronegativity increases from left to right.

General Chemistry 1st Semester Final Exam Review Guide – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards