Chemistry I SOL Practice Test — Set 4 of 6
Set 4 of 6 — 50 more free Chemistry I SOL practice questions from official VDOE released tests.
1. According to the periodic table, which series of elements is ordered according to decreasing reactivity?
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Answer: B — Cs, Mg, Si, He
2. With n representing the outermost energy level, the electron configuration for that level for elements in Group 14 is—
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Answer: G — ns²np²
3. An alkali metal will most readily react with—
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Answer: C — a halogen
4. Niels Bohr’s contribution to modern atomic theory was the proposition that—
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Answer: G — an atom has electrons in discrete energy levels
5. O₂, N₂, Cl₂, and I₂ are examples of—
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Answer: A — diatomic molecules
6. Which of these is the correct name for KBr?
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Answer: G — Potassium bromide
7. Which of the following is a balanced chemical equation?
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Answer: D — C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
8. Iron(III) chloride reacts with sodium carbonate to produce iron(III) carbonate and sodium chloride. Which is the balanced equation?
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Answer: H — 2FeCl₃ + 3Na₂CO₃ → Fe₂(CO₃)₃ + 6NaCl
9. How many different elements are present in NH₄OH?
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Answer: B — 3
10. Which equation best represents the reaction between sulfuric acid and calcium hydroxide?
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Answer: H — H₂SO₄ + Ca(OH)₂ → CaSO₄ + 2H₂O
11. According to its Lewis diagram, a nitrogen molecule has a—
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Answer: B — linear structure and a triple bond
12. The name for NH₄F is—
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Answer: G — ammonium fluoride
13. Cobalt can form ions with charges of 2+ and 3+. Which set represents two possible chemical formulas for cobalt combined with oxygen?
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Answer: F — CoO and Co₂O₃
14. The equation Mg + I₂ → Mg²⁺ + 2I⁻ describes—
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Answer: A — magnesium transferring an electron to each atom of iodine
15. Sodium iodide exhibits what type of bond?
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Answer: G — Ionic
16. Which of the following reactions is a decomposition reaction?
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Answer: A — 2KClO₃ → 2KCl + 3O₂
17. Which of the following reactions is a neutralization reaction?
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Answer: G — KOH + HNO₃ → KNO₃ + H₂O
18. Which of the following is an example of an ionic equation?
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Answer: A — 2AgNO₃ + Cu → Cu(NO₃)₂ + 2Ag
19. When seltzer tablets are placed in water, they fizz as they release a gas. To increase the speed that the gas is released, it would be best to increase the—
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Answer: G — temperature of the water
20. What is the mass of one mole of S₈?
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Answer: C — 257 g
21. What is the mass of 2 moles of HgO?
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Answer: J — 433 g
22. One mole of which compound contains two moles of hydrogen atoms?
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Answer: B — H₂S
23. A compound contains one mole of particles and has a mass of 58.5 g. The compound could be—
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Answer: G — NaCl
24. For the reaction 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O, how many moles of oxygen gas are needed to produce 12 moles of water?
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Answer: D — 14
25. For the reaction H₂(g) + I₂(g) ⇌ 2HI(g), ten moles of hydrogen and ten moles of iodine are placed in a sealed container at 490 °C. After some time, small amounts of hydrogen and iodine remain and the concentration of hydrogen iodide becomes constant. This occurs because—
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Answer: J — the reaction reached equilibrium
26. Indicator color-change ranges: • Methyl orange: red below pH 3.2, yellow above pH 4.4 • Methyl red: red below pH 4.8, yellow above pH 6.0 A solution turns methyl orange yellow and methyl red red. What could be the pH of the solution?
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Answer: C — 4.6
27. Which of the following is not a base?
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Answer: H — H₂SO₄
28. Nitrogen gas is collected over water at 20 °C. The vapor pressure of water at 20 °C is 18 mmHg. If the total pressure is 765 mmHg, what is the partial pressure of nitrogen?
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Answer: B — 747 mmHg
29. A gas has a volume of 50.0 cm³ at 73 °C. What volume will the gas occupy at 123 °C if pressure remains constant?
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Answer: H — 37.5 cm³
30. Using the ideal gas law, how many moles of a gas are present if the pressure is 100 kPa, the volume is 50.0 dm³, and the temperature is 50 °C?
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Answer: B — 1.86 moles
31. A balloon containing gas is submerged in a water bath. One way to increase the volume of gas in the balloon is to—
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Answer: G — increase the temperature of the water
32. Which phase change involves the absorption of heat?
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Answer: C — Liquid to gas
33. The heat of vaporization at the boiling point is: • Water: 539 cal/g • Alcohol: 204 cal/g • Chloroform: 59 cal/g What most likely causes chloroform to have the lowest heat of vaporization?
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Answer: H — Weakest intermolecular forces
34. How many calories are required to raise the temperature of 105 g of water from 30.0 °C to 70.0 °C?
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Answer: C — 4.20 × 10³
35. The table below lists properties of several liquids: • Benzene: nonpolar • Methanol: polar • Hexane: nonpolar • Octane: nonpolar • Water: polar A substance known to be soluble in water is being dissolved. Which other solvent would most likely dissolve this substance?
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Answer: G — Methanol
36. How many valence electrons does a neutral atom of silicon have?
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Answer: B — 4
37. The correct name for P₂O₅ is —
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Answer: D — diphosphorus pentoxide
38. Which of the following is a balanced equation?
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Answer: A — H₂ + Br₂ → 2HBr
39. Which of the following best describes sublimation?
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Answer: D — A solid forming a gas
40. The reaction times for three trials of an experiment are 90.3 s, 90.2 s, and 90.5 s. Which average time is expressed using the correct number of significant figures?
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Answer: A — 90.3
41. Which set of coefficients will balance the equation Al₂(SO₄)₃ + HCl → AlCl₃ + H₂SO₄?
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Answer: C — 2, 6, 2, 3
42. At room temperature, chlorine exists as a gas, bromine exists as a liquid, and iodine exists as a solid. The physical states of these elements indicate that melting point —
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Answer: C — increases from top to bottom within group 17
43. Using the following information: • Ammonium ion: NH₄⁺ • Phosphate ion: PO₄³⁻ What is the correct formula for ammonium phosphate?
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Answer: C — (NH₄)₃PO₄
44. 20 protons, 20 neutrons, 18 electrons Which represents an atom of calcium?
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Answer: B — 2
45. Which half-reaction represents reduction?
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Answer: D — Al⁰ → Al³⁺ + 3e⁻
46. A scientist has found the isotope oxygen-19. How many neutrons are present in this isotope?
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Answer: A — 8
47. The melting point of a white solid was determined in four repeated trials to be 56.0°C, 55.0°C, 57.5°C, and 55.5°C. What temperature should be reported as the melting point?
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Answer: C — 56.0°C
48. What is the name of the laboratory equipment used for strongly heating small amounts of solids, typically made of porcelain and able to withstand high temperatures?
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Answer: D — Evaporating dish
49. A titration curve shows pH on the vertical axis (0–14) and volume of NaOH added (0–50 mL) on the horizontal axis. The equivalence point occurs at pH ≈ 9.0. Which indicator is best for showing a color change at the equivalence point?
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Answer: B — Indigo carmine (pH range 11.4–13.0)
50. N₂ + 3H₂ → 2NH₃ If 6 L of hydrogen gas are used, how many liters of nitrogen gas are needed at STP?
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Answer: A — 2 L
Chemistry I SOL practice test — FAQ
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How many Chemistry I SOL practice questions are there?
Across all sets, there are 278 Chemistry I practice questions drawn from official Virginia Department of Education released SOL tests. This set has 50.
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The questions are adapted from official VDOE released SOL tests for Chemistry I. SOL Prep is an independent study aid and is not affiliated with or endorsed by the Virginia Department of Education.
Practice items adapted from Virginia Department of Education released SOL tests. Practice items are provided for study purposes and are not affiliated with or endorsed by the Virginia Department of Education.