Podcast
Questions and Answers
Which measurement contains an incorrect number of significant figures?
Which measurement contains an incorrect number of significant figures?
- 2038 (four)
- 0.00142 (three)
- 40.04 (two)
- 4 × 10^2 (one) (correct)
What volume, in mL, should be used for 22.6 g of bromine with a density of 3.12 g/mL?
What volume, in mL, should be used for 22.6 g of bromine with a density of 3.12 g/mL?
- 70.5
- 22.6
- 7.24 (correct)
- 0.138
How many micrograms are in 0.0158 g?
How many micrograms are in 0.0158 g?
- 1.58 × 10^-6
- 1.58
- 1.58 × 10^6 (correct)
- 1.58 × 10^-4
Which of the following represents the largest mass?
Which of the following represents the largest mass?
What is the temperature equivalent of 38 °C in Kelvin?
What is the temperature equivalent of 38 °C in Kelvin?
Which of the following represents the proper number of significant figures in the result of $45.36 M$?
Which of the following represents the proper number of significant figures in the result of $45.36 M$?
What is the density of ethanol if the mass of 236 mL is 186 g?
What is the density of ethanol if the mass of 236 mL is 186 g?
How many millimeters are there in $0.010 km$?
How many millimeters are there in $0.010 km$?
If an object weighs $3.95 kg$, what is its weight in pounds?
If an object weighs $3.95 kg$, what is its weight in pounds?
Which of the following is considered a measurement that is not exact?
Which of the following is considered a measurement that is not exact?
In the metric system, the prefix 'micro' represents which of the following?
In the metric system, the prefix 'micro' represents which of the following?
Which of the following processes does not represent a chemical change?
Which of the following processes does not represent a chemical change?
Which of the following processes represents a physical change?
Which of the following processes represents a physical change?
Flashcards
Matter
Matter
Anything that occupies space and has mass.
Compound
Compound
A substance formed by the chemical combination of two or more elements in fixed proportions.
Significant Figures
Significant Figures
The number of digits in a measurement that are known with certainty plus one estimated digit.
Chemical Change
Chemical Change
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Physical Change
Physical Change
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Density
Density
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Metric Prefix micro
Metric Prefix micro
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Conversion Factor
Conversion Factor
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Significant Figures in 2038 (four)
Significant Figures in 2038 (four)
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Significant Figures in 0.00142 (three)
Significant Figures in 0.00142 (three)
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Bromine Volume (22.6 g)
Bromine Volume (22.6 g)
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Micrograms to Grams Conversion (0.0158 g)
Micrograms to Grams Conversion (0.0158 g)
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Volume Conversion (600 mL to fluid ounces)
Volume Conversion (600 mL to fluid ounces)
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Study Notes
Multiple Choice Questions
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Question 1: Light is not matter. Options include air, light, atoms, wood, and water.
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Question 2: Water is a compound. Options include water, milk, sodium metal, iron.
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Question 3: The answer to 242.0 g - 42.00 g has 3 significant figures.
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Question 4: Dissolving sugar in water does not represent a chemical change. Options include dissolving sugar, reaction of sodium with water, souring of milk, iron rusting, and leaves changing color.
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Question 5: 15 hours is not an exact measurement. Options include 15 hours, 1 cm = 10 mm, 6 apples, 8 students, and 9 chairs.
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Question 6: Micro represents 10⁻⁶.
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Question 7: Fermenting grape juice is not a physical change. Options include squeezing juice, fermenting juice, melting ice, evaporating water, and distillation of ethanol.
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Question 8: The density of ethanol is 0.788 g/mL.
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Question 9: 0.010 km is equal to 1.0 x 10⁴ millimeters.
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Question 10: 3.95 kg is equal to 8.70 pounds.
Additional Questions
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Question 11: 45.36 M / 3.2 S = 14.2
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Question 12: Incorrect example: 40.04 (two)
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Question 13: 22.6 g of bromine = 7.24 mL (Density of bromine is 3.12 g/mL)
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Question 14: 0.0158 g = 1.58 x 10⁴ µg
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Question 15: 600. mL is equal to 20.4 fluid ounces.
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Question 16: 25 kg is the largest mass. Options include 2.5 × 10⁻² mg, 2.5 × 10⁹ fg, 25 kg, 2.5 × 10¹⁵ pg, and 2.5 × 10¹⁰ ng.
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Question 17: 38°C is the highest temperature. Options include 38 °C, 302 K, 96 °F, and the freezing point of water.
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Question 18: 21.8 g of osmium occupies 0.965 cm³.
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Question 19: The result of the calculation 12.00000 × 0.9893 + 13.00335 × 0.0107 requires 3 significant figures.
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Question 20: 45 m/s is equal to 1.6 x 10² km/hr.
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Description
Test your knowledge on fundamental chemistry concepts with this comprehensive quiz focused on matter, compounds, and significant figures. Explore questions about physical and chemical changes, measurements, and density. Perfect for high school chemistry students!
