Chemistry I SOL Practice Test — Set 5 of 6
Set 5 of 6 — 50 more free Chemistry I SOL practice questions from official VDOE released tests.
1. Which of the following best represents the reaction between hydrochloric acid and sodium hydroxide?
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Answer: A — 2HCl + 2NaOH → Na(OH)₂ + H₂Cl₂
2. Which of the following has little or no effect on the boiling point of water?
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Answer: A — Increasing air pressure above the liquid
3. Formaldehyde (H₂CO) reacts with oxygen to form CO₂ and H₂O. How many moles of CO₂ are produced from reacting 2 moles of H₂CO with excess oxygen?
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Answer: D — 8
4. Four solutions have the following pH values: A: 2 B: 6 C: 9 D: 12 Which pair would be acidic if mixed in equal quantities?
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Answer: D — C and D
5. The elements characterized by an incomplete d sublevel are called —
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Answer: A — transition elements
6. A graph shows temperature (°C) on the x-axis and pressure (kPa) on the y-axis for four liquids labeled 1–4. At 101.3 kPa, liquid 1 boils at the lowest temperature. Which liquid boils at the lowest temperature?
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Answer: D — 4
7. The net charge on an aluminum ion is +3 because there are —
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Answer: A — 10 protons and 13 electrons
8. The type of formula that shows the arrangement of atoms and bonds is called —
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Answer: D — structural
9. Standard atmospheric pressure is 101.3 kPa. According to the described boiling point graph in Question 21, which liquid boils at the lowest temperature?
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Answer: A — 1
10. Which of the following is a mixture?
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Answer: B — Glucose
11. In the reaction 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O what is the mole ratio of C₄H₁₀ to CO₂?
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Answer: B — 2:13
12. One indicator that electrons in atoms are limited to specific energy levels is that —
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Answer: C — Doppler shifts occur in atomic spectra
13. A heating curve for 1 kg of water shows temperature versus heat added. Between points labeled 2 and 3, temperature remains constant at 0°C while heat is added. During this interval, energy is being used to —
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Answer: B — heat liquid water
14. A container holds 20.0 g of neon gas. Under the same conditions, how many grams of xenon would the container hold?
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Answer: C — 262 g
15. In the reaction H₂SO₄ + KOH → H₂O + K⁺ + HSO₄⁻ which substance is the base?
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Answer: B — KOH
16. What is the molecular formula of a substance with empirical formula C₂H₅ and molecular mass 58 g/mol?
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Answer: A — C₂H₅
17. According to Boyle’s law, the relationship between pressure and volume of a gas at constant temperature is —
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Answer: B — inversely proportional
18. In the combustion of ethane, how many moles of CO₂ are produced from 1.00 mole of C₂H₆?
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Answer: D — 4.00
19. Charles’ Law explains why —
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Answer: D — some gases react only at high temperatures
20. What is a possible cause of a large percentage error in an experiment where MgO is produced from burning magnesium?
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Answer: B — The same balance was used throughout
21. For the equilibrium 2HCl(g) ⇌ H₂(g) + Cl₂(g) which change will shift equilibrium to the right?
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Answer: A — Doubling reactant concentration
22. The energy required to raise the temperature of 1 g of a substance by 1°C is called —
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Answer: D — specific heat capacity
23. The empirical formula for C₆H₁₂ is —
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Answer: A — C₃H₆
24. In the reaction Na₂CO₃ + Ca(OH)₂ → 2NaOH + CaCO₃ what type of reaction is represented?
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Answer: B — Double replacement
25. Which completes the equation 2O₃(g) → ___ (g)?
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Answer: A — O₂
26. In a periodic table created by an alien, element G is a metal and element E is a nonmetal. What type of bond would form between G and E?
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Answer: C — Covalent
27. A graph shows total mass of a flask and contents versus time during the reaction of CaCO₃ with HCl. The mass decreases rapidly from 0–10 s, then decreases more slowly. During which interval is the reaction fastest?
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Answer: A — 0–10 s
28. A graduated cylinder initially contains 10 mL of water. After object X is added, the water level rises to 35 mL. What is the volume of object X?
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Answer: A — 20 mL
29. How many liters are equivalent to 5 milliliters?
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Answer: C — 500 L
30. Five trials of gas volume measurements give 5.20, 5.20, 5.19, 5.20, and 5.20 L for a known value of 2.20 L. This data reflects —
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Answer: A — low precision and low accuracy
31. A gas mixture has a total pressure of 755 mmHg. If argon exerts 174 mmHg and helium exerts 389 mmHg, what is the partial pressure of oxygen?
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Answer: C — 366 mmHg
32. A student uses a metric ruler marked in centimeters with millimeter subdivisions (each small division equals 0.1 cm). The left end of a nail is aligned at 0.00 cm. The right end of the nail lies halfway between the 3.5 cm and 3.6 cm marks. According to the precision of the ruler, what is the measured length of the nail?
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Answer: G — 3.55 cm
33. The following reaction is illustrated: hydrogen gas reacts with oxygen gas to form water. The unbalanced equation is H₂ + O₂ → H₂O. What are the coefficients of the correctly balanced equation, listed in the order H₂, O₂, H₂O?
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Answer: C — 2, 1, 2
34. Elements from which two groups in the periodic table would most likely combine with each other to form an ionic compound?
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Answer: H — Groups 1 and 17
35. Which of the following describes what takes place when iron atoms are oxidized from Fe to Fe²⁺ ions?
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Answer: B — A loss of two electrons
36. An ice-skating rink has tubes under its floor to freeze the water. Salt water is cooled well below the freezing point of pure water and pumped through the tubes. Why can the salt water be cooled to such a low temperature without freezing?
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Answer: G — Adding salt to water lowers its freezing point.
37. A potential energy diagram for a chemical reaction shows energy on the vertical axis and progress of reaction on the horizontal axis. The diagram includes a high activation energy barrier for the uncatalyzed reaction and a lower activation energy barrier for the catalyzed reaction. Which numbered label represents the effect of a catalyst on the reaction?
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Answer: B — 2
38. In chemical compounds, covalent bonds form when —
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Answer: H — pairs of electrons are shared between two nonmetal atoms
39. Which scientist was the first to conclude through experimentation that atoms have positive charges in their nuclei?
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Answer: D — Rutherford
40. Soda water is a solution of carbon dioxide dissolved in water. This solution is composed of a —
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Answer: H — gaseous solute in a liquid solvent
41. If the heat of fusion of water is 80 cal/g, how much heat energy is required to change 15.0 g of ice at 0°C to 15.0 g of liquid water at 0°C?
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Answer: C — 1200 cal
42. Three elements, X, Y, and Z, have consecutive increasing atomic numbers. If element X is a noble gas, what will be the symbol for the ion of element Z in its compounds?
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Answer: J — Z²⁺
43. A gas cylinder contains 4.00 moles of oxygen gas at 300.0 K. The pressure is 400.0 kPa. Using R = 8.31 kPa·dm³/(mol·K), what is the volume of the gas?
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Answer: C — 24.9 dm³
44. ?AgNO₃ +?AlCl₃ →?AgCl +?Al(NO₃)₃ Which set of coefficients balances this equation, listed in the order AgNO₃, AlCl₃, AgCl, Al(NO₃)₃?
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Answer: G — 3, 1, 3, 1
45. The formula for lithium nitride is —
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Answer: B — Li₃N
46. Litmus paper turns red in acidic solutions and blue in basic solutions. Which of the following aqueous solutions will cause litmus paper to turn red?
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Answer: H — HCl
47. Four measurements of the same object are recorded: • Measurement 1: 5.2 g • Measurement 2: 5.4 g • Measurement 3: 3.0 g • Measurement 4: 2.45 g The known mass of the object is 5.38 g. Which measurement is the most accurate?
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Answer: B — 2
48. The correct structural formula for ethane (C₂H₆) shows two carbon atoms single-bonded to each other, with each carbon bonded to three hydrogen atoms. Which option correctly represents this structure?
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Answer: G — —
49. If a student’s hand is accidentally exposed to an acidic solution, what should be done?
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Answer: B — Rinse the hand in running water.
50. A diagram shows one compound breaking apart into two simpler substances. What type of reaction does this represent?
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Answer: F — Decomposition
Chemistry I SOL practice test — FAQ
Are these Chemistry I SOL practice questions free?
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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.
Are these real Virginia SOL questions?
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.