Physics Chapter 5 Quiz
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Questions and Answers

What is the derived unit for measuring force?

  • m/s
  • G/cm3
  • Joule
  • kg·m/s2 (correct)

How many grams are in 0.572 moles of glucose (C6H12O6)?

  • 90 g
  • 102.96 g (correct)
  • 180 g
  • 72 g

What is the formula used to convert moles to grams?

  • No. of grams = no. of moles × molar mass (correct)
  • No. of grams = molar mass/no. of moles
  • No. of grams = no. of moles/molar mass
  • Molar mass = no. of grams/no. of moles

Which of the following units is used to express density?

<p>G/cm3 or G/ml (B)</p> Signup and view all the answers

What is the definition of velocity in terms of its derived unit?

<p>Rate of change of position over time (B)</p> Signup and view all the answers

What happens to the density of an object when pressure is increased?

<p>Density increases as the volume decreases. (A)</p> Signup and view all the answers

What is the specific gravity of a substance?

<p>Density of the substance divided by the density of water. (C)</p> Signup and view all the answers

At what temperature does water have a density of 999.8395 kg/m³?

<p>0ºC (C)</p> Signup and view all the answers

Which of the following statements about temperature measurement is correct?

<p>Temperature can be measured in Celsius, Kelvin, or Fahrenheit. (C)</p> Signup and view all the answers

In what situation does increasing mass not lead to an increase in density?

<p>When the substance is water frozen into ice. (B)</p> Signup and view all the answers

What does flammability refer to?

<p>The ability of a compound to burn when exposed to flame (D)</p> Signup and view all the answers

Which characteristic is NOT associated with solids?

<p>Arranged in a totally irregular manner (A)</p> Signup and view all the answers

Which of the following represents oxidation?

<p>Loss of electrons (D)</p> Signup and view all the answers

What is the basic unit of mass in the International System of Units (SI)?

<p>Kilogram (C)</p> Signup and view all the answers

Which property describes an extensive property of matter?

<p>Mass (A)</p> Signup and view all the answers

Which unit corresponds to luminous intensity in the SI system?

<p>Candela (D)</p> Signup and view all the answers

What describes the motion of particles in a liquid?

<p>Move around past each other (D)</p> Signup and view all the answers

Which of the following is a chemical property of a substance?

<p>Heat of combustion (B)</p> Signup and view all the answers

What is the formula for calculating density?

<p>ρ = m/v (B)</p> Signup and view all the answers

How does density typically vary with temperature and pressure?

<p>It typically varies more for gases than for solids and liquids. (D)</p> Signup and view all the answers

Which of the following characteristics defines gases?

<p>Move randomly and have no fixed shape or volume (A)</p> Signup and view all the answers

Which of the following is NOT a fundamental SI unit?

<p>Pressure (D)</p> Signup and view all the answers

Which of the following is NOT a physical property?

<p>Heat of combustion (A)</p> Signup and view all the answers

What is the role of the mole in the SI system?

<p>It measures the amount of substance. (B)</p> Signup and view all the answers

Which characteristic does NOT describe liquids?

<p>Particles vibrate in fixed positions (A)</p> Signup and view all the answers

What is the primary distinction between intensive and extensive properties?

<p>Extensive properties depend on the amount of matter, while intensive do not. (B)</p> Signup and view all the answers

Flashcards

Density

Density is the mass of a substance per unit volume.

Specific Gravity

The ratio of the density of a substance to the density of a reference material (usually water).

Effect of pressure on density

Increasing pressure on an object decreases its volume, increasing its density.

Effect of temperature on density

Increasing temperature of a substance increases its volume thus lowering its density.

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Water's Unusual Density

Water's density is unusual because its solid form (ice) is less dense than its liquid form.

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Area

The extent of a two-dimensional space

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States of Matter

The different forms in which matter can exist: solid, liquid, and gas.

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Physical Property

A characteristic that describes matter without changing its chemical composition.

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Volume

The amount of three-dimensional space occupied by an object.

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Velocity

Rate of change of position (speed and direction).

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Chemical Property

A characteristic that describes matter's ability to change into a different substance.

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Extensive Property

A physical property that depends on the amount of matter present.

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Converting moles to grams

Multiply the number of moles by the molar mass of the substance to find the mass in grams.

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Intensive Property

A physical property that does not depend on the amount of matter present.

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Molar mass

Mass of one mole of a substance, given in grams per mole (g/mol)

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Density

A measure of how much mass is contained within a given volume.

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Boiling Point

The temperature at which a substance changes from a liquid to a gas.

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Heat of Combustion

Energy released when a substance burns completely in oxygen.

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Flammability

The ability of a compound to burn when exposed to a flame, typically at high temperatures in the presence of oxygen.

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Oxidation

The loss of electrons in a chemical reaction.

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Reduction

The gain of electrons in a chemical reaction.

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Chemical Reaction

A process where substances change into new substances with different chemical formulas.

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SI Units

The International System of Units, a metric system used in science, medicine, and industry.

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Density

The mass of a substance contained in a specific volume.

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Density Variation

Density changes with temperature and pressure, usually small for solids and liquids, greater for gases.

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Units of Measurement

The standard metrics for physical quantities, including mass (kilogram), time (second), temperature (Kelvin), electrical current(Ampere), amount of substance (mole), luminous intensity (candela), length (meter).

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