Physical Science Module 1
This quiz may be taken as many times as you wish as practice to increase comprehension of material. Have fun!
- 1.
What is the smallest chemical unit of matter?
- A.
Molecule
- B.
Atom
- C.
Solution
- D.
Concentration
Correct Answer
B. AtomExplanation
An atom is the smallest chemical unit of matter. It consists of a nucleus, which contains protons and neutrons, and electrons that orbit around the nucleus. Atoms combine together to form molecules, which are groups of atoms bonded together. A molecule is a larger unit of matter compared to an atom. A solution is a mixture of two or more substances, and concentration refers to the amount of solute present in a given amount of solvent. Neither of these options represents the smallest unit of matter, which is an atom.Rate this question:
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- 2.
What are two or more atoms linked together to make a substance with unique properties?
- A.
Molecule
- B.
Atom
- C.
Solution
- D.
Concentration
Correct Answer
A. MoleculeExplanation
A molecule is formed when two or more atoms are chemically bonded together. These atoms can be of the same element or different elements. The unique arrangement and combination of atoms in a molecule give it distinctive properties that are different from the individual atoms. Therefore, a molecule is a substance with unique properties due to the specific arrangement of its constituent atoms.Rate this question:
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- 3.
What is the quantity of a substance within a certain volume?
- A.
Atom
- B.
Molecule
- C.
Solution
- D.
Concentration
Correct Answer
D. ConcentrationExplanation
Concentration refers to the amount of a substance present within a specific volume. It is a measure of how much solute is dissolved in a solvent or how much of a particular component is present in a mixture. In other words, concentration tells us the relative abundance or strength of a substance in a given volume.Rate this question:
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- 4.
Sulfur is a yellow powder that is composed of sulfur atoms. Sulfur dioxide is a colorles, poisonous gas that contains sulfur atoms. Is sulfur dioxide composd of atoms or molecules?
- A.
Atoms
- B.
Molecules
Correct Answer
B. MoleculesExplanation
Sulfur dioxide is composed of molecules. In the given question, it is mentioned that sulfur dioxide is a gas that contains sulfur atoms. Since atoms combine to form molecules, it can be inferred that sulfur dioxide is composed of molecules.Rate this question:
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- 5.
You are reading a scientist's notes and you notice a measurement that is listed at "12.3 kilograms." This measurement represents ____________________.
- A.
Length
- B.
Mass
- C.
Volume
Correct Answer
B. MassExplanation
The measurement listed as "12.3 kilograms" represents mass. Mass is a measure of the amount of matter in an object, and it is commonly measured in kilograms.Rate this question:
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- 6.
What metric prefix means "1000?"
- A.
Centi
- B.
Kilo
- C.
Milli
- D.
Deci
Correct Answer
B. KiloExplanation
The metric prefix "kilo" means "1000". It is used to denote a factor of 1000 in the metric system. For example, a kilogram is equal to 1000 grams. Therefore, "kilo" is the correct answer for the given question.Rate this question:
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- 7.
How many centimeters are in 1.6 meters?
- A.
0.16 cm
- B.
1.6 cm
- C.
160 cm
- D.
1600 cm
Correct Answer
C. 160 cmExplanation
There are 100 centimeters in 1 meter. Therefore, to find the number of centimeters in 1.6 meters, we multiply 1.6 by 100. This gives us 160 centimeters.Rate this question:
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- 8.
An object's volume is 0.12 kL. What is its volume in liters?
- A.
0.12 L
- B.
1.2 L
- C.
12 L
- D.
120 L
Correct Answer
D. 120 LExplanation
The correct answer is 120 L because 0.12 kL is equal to 120 L. The prefix "kilo" represents a factor of 1000, so 0.12 kL is equivalent to 0.12 multiplied by 1000, which equals 120. Therefore, the object's volume is 120 liters.Rate this question:
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- 9.
A rock has a mass of 45.1 kg. What is its mass in slugs? (1 slug = 14.49 kg) Round to the nearest whole number.
- A.
3 kg
- B.
15 kg
- C.
45 kg
- D.
675 kg
Correct Answer
A. 3 kgExplanation
The correct answer is 3 kg. To convert the mass of the rock from kilograms to slugs, we divide the mass in kilograms by the conversion factor of 14.49 kg/slug. Therefore, 45.1 kg ÷ 14.49 kg/slug = 3.11 slugs. Since we are asked to round to the nearest whole number, the mass of the rock in slugs is 3 slugs.Rate this question:
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- 10.
The average length of a cubit is ______________.
- A.
45 mm
- B.
45 cm
- C.
45 in
- D.
45 ft
Correct Answer
B. 45 cmExplanation
A cubit is an ancient unit of length that was commonly used in many ancient civilizations. It is typically defined as the distance from the elbow to the tip of the middle finger. The average length of a cubit is believed to be around 45 cm, although it may vary slightly depending on the individual. Therefore, the correct answer is 45 cm.Rate this question:
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Mar 21, 2023Quiz Edited by
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Jul 17, 2012Quiz Created by
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