Podcast
Questions and Answers
What is the derived unit for measuring force?
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)?
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?
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?
Which of the following units is used to express density?
What is the definition of velocity in terms of its derived unit?
What is the definition of velocity in terms of its derived unit?
What happens to the density of an object when pressure is increased?
What happens to the density of an object when pressure is increased?
What is the specific gravity of a substance?
What is the specific gravity of a substance?
At what temperature does water have a density of 999.8395 kg/m³?
At what temperature does water have a density of 999.8395 kg/m³?
Which of the following statements about temperature measurement is correct?
Which of the following statements about temperature measurement is correct?
In what situation does increasing mass not lead to an increase in density?
In what situation does increasing mass not lead to an increase in density?
What does flammability refer to?
What does flammability refer to?
Which characteristic is NOT associated with solids?
Which characteristic is NOT associated with solids?
Which of the following represents oxidation?
Which of the following represents oxidation?
What is the basic unit of mass in the International System of Units (SI)?
What is the basic unit of mass in the International System of Units (SI)?
Which property describes an extensive property of matter?
Which property describes an extensive property of matter?
Which unit corresponds to luminous intensity in the SI system?
Which unit corresponds to luminous intensity in the SI system?
What describes the motion of particles in a liquid?
What describes the motion of particles in a liquid?
Which of the following is a chemical property of a substance?
Which of the following is a chemical property of a substance?
What is the formula for calculating density?
What is the formula for calculating density?
How does density typically vary with temperature and pressure?
How does density typically vary with temperature and pressure?
Which of the following characteristics defines gases?
Which of the following characteristics defines gases?
Which of the following is NOT a fundamental SI unit?
Which of the following is NOT a fundamental SI unit?
Which of the following is NOT a physical property?
Which of the following is NOT a physical property?
What is the role of the mole in the SI system?
What is the role of the mole in the SI system?
Which characteristic does NOT describe liquids?
Which characteristic does NOT describe liquids?
What is the primary distinction between intensive and extensive properties?
What is the primary distinction between intensive and extensive properties?
Flashcards
Density
Density
Density is the mass of a substance per unit volume.
Specific Gravity
Specific Gravity
The ratio of the density of a substance to the density of a reference material (usually water).
Effect of pressure on density
Effect of pressure on density
Increasing pressure on an object decreases its volume, increasing its density.
Effect of temperature on 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 Unusual Density
Water's density is unusual because its solid form (ice) is less dense than its liquid form.
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Area
Area
The extent of a two-dimensional space
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States of Matter
States of Matter
The different forms in which matter can exist: solid, liquid, and gas.
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Physical Property
Physical Property
A characteristic that describes matter without changing its chemical composition.
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Volume
Volume
The amount of three-dimensional space occupied by an object.
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Velocity
Velocity
Rate of change of position (speed and direction).
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Chemical Property
Chemical Property
A characteristic that describes matter's ability to change into a different substance.
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Extensive Property
Extensive Property
A physical property that depends on the amount of matter present.
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Converting moles to grams
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
Intensive Property
A physical property that does not depend on the amount of matter present.
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Molar mass
Molar mass
Mass of one mole of a substance, given in grams per mole (g/mol)
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Density
Density
A measure of how much mass is contained within a given volume.
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Boiling Point
Boiling Point
The temperature at which a substance changes from a liquid to a gas.
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Heat of Combustion
Heat of Combustion
Energy released when a substance burns completely in oxygen.
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Flammability
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
Oxidation
The loss of electrons in a chemical reaction.
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Reduction
Reduction
The gain of electrons in a chemical reaction.
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Chemical Reaction
Chemical Reaction
A process where substances change into new substances with different chemical formulas.
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SI Units
SI Units
The International System of Units, a metric system used in science, medicine, and industry.
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Density
Density
The mass of a substance contained in a specific volume.
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Density Variation
Density Variation
Density changes with temperature and pressure, usually small for solids and liquids, greater for gases.
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Units of Measurement
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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