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Chemistry Chapter 1 Quiz - Answered, Exams of Chemistry

Southern University System (SUS)Chemistry

A chemistry quiz with 40 multiple-choice questions covering topics such as the physical states of matter, the law of constant composition, homogeneous and heterogeneous mixtures, elements and compounds, chemical reactions, intensive and extensive properties, units and measurements, significant figures, and density calculations. The quiz provides the correct answers and explanations, making it a valuable resource for students studying introductory chemistry concepts. The document could be useful for university students taking general chemistry courses, high school students preparing for chemistry exams, or lifelong learners interested in reviewing fundamental chemistry principles.

Typology: Exams

2023/2024

Available from 08/25/2024

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Chemistry Chapter 1 Quiz-Answered
1) What is the physical state in which matter has a specific volume but does not have a
specific shape?
A) gas
B) solid
C) liquid
D) salts
E) ice - ANSWER-C) liquid
2) The law of constant composition applies to ________.
A) solutions
B) heterogeneous mixtures
C) compounds
D) homogeneous mixtures
E) solids - ANSWER-C) compounds
3) A combination of sand, salt, and water is an example of a ________.
A) homogeneous mixture
B) heterogeneous mixture
C) compound
D) pure substance
E) solid - ANSWER-B) heterogeneous mixture
4) A small amount of salt dissolved in water is an example of a ________.
A) homogeneous mixture
B) heterogeneous mixture
C) compound
D) pure substance
E) solid - ANSWER-A) homogeneous mixture
5) Which one of the following has the element name and symbol correctly matched?
A) S, sodium
B) Tn, tin
C) Fe, iron
D) N, neon
E) B, bromine - ANSWER-C) Fe, iron
6) Which one of the following elements is identified by the chemical symbol, Al?
A) tin
B) aluminum
C) mercury
D) copper
E) lead - ANSWER-B) aluminum
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Chemistry Chapter 1 Quiz-Answered

  1. What is the physical state in which matter has a specific volume but does not have a specific shape? A) gas B) solid C) liquid D) salts E) ice - ANSWER-C) liquid
  2. The law of constant composition applies to ________. A) solutions B) heterogeneous mixtures C) compounds D) homogeneous mixtures E) solids - ANSWER-C) compounds
  3. A combination of sand, salt, and water is an example of a ________. A) homogeneous mixture B) heterogeneous mixture C) compound D) pure substance E) solid - ANSWER-B) heterogeneous mixture
  4. A small amount of salt dissolved in water is an example of a ________. A) homogeneous mixture B) heterogeneous mixture C) compound D) pure substance E) solid - ANSWER-A) homogeneous mixture
  5. Which one of the following has the element name and symbol correctly matched? A) S, sodium B) Tn, tin C) Fe, iron D) N, neon E) B, bromine - ANSWER-C) Fe, iron
  6. Which one of the following elements is identified by the chemical symbol, Al? A) tin B) aluminum C) mercury D) copper E) lead - ANSWER-B) aluminum
  1. Which one of the following is often separated into its components by simple techniques such as filtering or decanting? A) heterogeneous mixture B) compounds C) homogeneous mixture D) elements E) solutions - ANSWER-E) solutions
  2. For which of the following, can the composition vary? A) pure substance B) element C) both homogeneous and heterogeneous mixtures D) homogeneous mixture E) heterogeneous mixture - ANSWER-C) both homogeneous and heterogeneous mixtures
  3. If matter is uniform throughout and cannot be separated into other substances by physical means, it is ________. A) a compound B) either an element or a compound C) a homogeneous mixture D) a heterogeneous mixture E) an element - ANSWER-B) either an element or a compound
  4. Homogeneous mixtures are also known as ________. A) solids B) compounds C) elements D) substances E) solutions - ANSWER-E) solutions
  5. The law of constant composition says ________. A) that the composition of a compound is always the same B) that all substances have the same composition C) that the composition of an element is always the same D) that the composition of a homogeneous mixture is always the same E) that the composition of a heterogeneous mixture is always the same - ANSWER-A) that the composition of a compound is always the same
  6. Which of the following is an illustration of the law of constant composition? A) Water boils at 100 °C at 1 atm pressure. B) Water is 11% hydrogen and 89% oxygen by mass. C) Water can be separated into other substances by a chemical process. D) Water and salt have different boiling points. E) Water is a compound. - ANSWER-B) Water is 11% hydrogen and 89% oxygen by mass.
  1. Of the following, ________ is the largest mass. A) 25 kg B) 2.5 × 10-2 mg C) 2.5 × 1015 pg D) 2.5 × 109 fg E) 2.5 × 1010 ng - ANSWER-A) 25 kg
  2. Which one of the following is the highest temperature? A) 38 °C B) 96 °F C) 302 K D) none of the above E) the freezing point of water - ANSWER-A) 38 °C
  3. Which one of the following is true about the liter? A) It is the SI base unit for volume. B) It is equivalent to a cubic decimeter. C) It is slightly smaller than a quart. D) It contains 106 cubic centimeters. E) It is slightly smaller than a gallon. - ANSWER-B) It is equivalent to a cubic decimeter.
  4. Which of the items below would be considered the most dense? A) a piece of wood with a volume of 2.5 L and a mass of 12.5 kg B) a ball with a volume of 139 mL and a mass of 93 g C) a tire with a volume of 2.12 L and a mass of 4.22 × 104 mg D) a wire with a volume of 3.91 × 10-7 L and a mass of 7.93 × 10-1 ng E) a block of metal with a volume of 1350 mL and a mass of 1.29 × 103 g - ANSWER-A) a piece of wood with a volume of 2.5 L and a mass of 12.5 kg
  5. Which calculation clearly shows a conversion between temperatures in degrees Celsius, °C, and temperature in Kelvins, K? A) K = °C + 273. B) K = 273.15 - °C C) K = [°C - 32] / 1. D) K = [°C + 32] × 1. E) K = °C - ANSWER-A) K = °C + 273.
  6. Osmium has a density of 22.6 g/cm3. What volume (in cm3) would be occupied by a 21.8 g sample of osmium? A) 0. B) 1. C) 493 D) 2.03 × 10- E) 2.03 × 103 - ANSWER-A) 0.
  1. Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm? A) 2.1 × 104 g B) 4.3 × 102 g C) 1.3 × 103 g D) 1.4 g E) 2.3 × 10-2 g - ANSWER-C) 1.3 × 103 g
  2. Precision refers to ________. A) how close a measured number is to other measured numbers B) how close a measured number is to the true value C) how close a measured number is to the calculated value D) how close a measured number is to zero E) how close a measured number is to infinity - ANSWER-A) how close a measured number is to other measured numbers
  3. Accuracy refers to ________. A) how close a measured number is to zero B) how close a measured number is to the calculated value C) how close a measured number is to other measured numbers D) how close a measured number is to the true value E) how close a measured number is to infinity - ANSWER-D) how close a measured number is to the true value
  4. Which of the following has the same number of significant figures as the number 1.00310? A) 1 × 106 B) 199. C) 8. D) 5. E) 11.76 - ANSWER-B) 199.
  5. Acceleration due to gravity of a free-falling object is 9.8 m/s2. Express this in millimeters/millisecond2. A) 9.8 × 10- B) 9.8 × 103 C) 9.8 × 10- D) 9. E) 9.8 × 10-3 - ANSWER-E) 9.8 × 10-
  6. A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL. What is the density of the object determined to an appropriate number of significant figures? A) 8 × 10-1 g/mL B) 7.9 × 10-1 g/mL C) 7.86 × 10-1 g/mL D) 7.859 × 10-1 g/mL
  1. The density of a gold nugget is 19.3 g/cm3. If the volume of the gold nugget is 0.00369 L, the mass of the nugget is ________ g. A) 71. B) 0. C) 19. D) 5. E) none of the above - ANSWER-A) 71.
  2. A temperature of ________ K is the same as 63 °F. A) 17 B) 276 C) 290 D) 29 E) 336 - ANSWER-C) 290
  3. A certain liquid has a density of 2.67 g/cm3. 1340 g of this liquid would occupy a volume of ________ L. A) 1.99 × 10- B) 50. C) 3. D) 35. E) 0.502 - ANSWER-E) 0.