Question 1

Which of the following best describes the image in Figure 1 showing the hydrogen spectrum?

Accepted Answer

The emission spectrum of hydrogen

Question 2

Which group on the Periodic Table contains elements that are all gases at room temperature?

Accepted Answer

Group 18 (Noble gases)

Question 3

What is the electron configuration for a neutral atom of sodium (Na)?

Accepted Answer

$$1s^2$$\ $$2s^2$$\ $$2p^6$$\ $$3s^1$$

Question 4

Which of the following is the correct formula for the compound formed between barium and bromine?

Accepted Answer

$$BaBr_2$$

Question 5

The products in the complete combustion of octane ($$C_8H_{18}) $$are:

Accepted Answer

$$CO_2$$ and $$H_2O$$

Question 6

Which of the following reactions is best described as a double displacement reaction?

Accepted Answer

$$AgNO_3 + $$NaCl \rightarrow AgCl + $$NaNO_3$$

Question 7

A sample of $$O_2$$ gas has a volume of $$2.00\ L at$$ $$1.00\ atm$$ and $$273\ K. $$What will the volume be if the pressure is increased to $$2.00\ atm at $$constant temperature?

Accepted Answer

$$1.00\ L$$

Question 8

Which of the following best describes the relationship between temperature and the kinetic energy of gas molecules?

Accepted Answer

As temperature increases, kinetic energy increases

Question 9

The specific heat of water is $$4.18\ J/g\cdot K. $$How much heat is required to raise the temperature of $$50.0\ g of $$water from $$20.0\ ^\circ C to$$ $$30.0\ ^\circ C$$?

Accepted Answer

$$2090\ J$$

Question 10

Which isotope of strontium is most abundant based on the periodic table and isotope data?

Accepted Answer

$$^{88}Sr$$

Question 11

A balloon with initial volume $$V_1 = 1.0$$\ L$$ at P_1$ = 1.0\ atm is $$compressed to $$V_2 = 0.5$$\ L$$. What is the final pressure P_2$ if temperature is constant?

Accepted Answer

$$2.0\ atm$$

Question 12

Which of the following elements is a transition metal?

Accepted Answer

Iron (Fe)

Question 13

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 14

Which of the following ions has the largest radius?

Accepted Answer

$$Cl^-$$

Question 15

Which of the following is the correct Lewis structure for $$CO_2$$?

Accepted Answer

O=C=O with all atoms having full octets

Question 16

Which of the following best describes the type of bond in $$NaCl$$?

Accepted Answer

Ionic bond

Question 17

Which of the following is a property of metals?

Accepted Answer

Good conductors of electricity

Question 18

Which of the following is the correct molecular formula for glucose?

Accepted Answer

$$C_6H_{12}O_6$

Question 19

Which of the following best describes the effect of increasing temperature on the solubility of most solids in water?

Accepted Answer

Solubility increases

Question 20

Which of the following is the correct balanced equation for the reaction between hydrochloric acid and sodium hydroxide?

Accepted Answer

$$HCl + NaOH \rightarrow NaCl + H_2O$$

Exam 2 Study Guide: Chemistry Concepts and Problem-Solving

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