AP Physics 1 Flashcards: Internal Structure And Density

What this deck covers

This deck focuses on Internal Structure And Density, giving you a quick way to review the definitions, rules, and examples that matter most for AP Physics 1.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Identify the density of water at 4°C.

Answer: 1,000 kg/m³. Maximum density of water occurs at 4°C.

Flashcard 2: Calculate the density of a liquid with mass 200 g and volume 250 mL.

Answer: Density = 0.8 g/mL. Apply $\rho = \frac{200}{250} = 0.8$ g/mL.

Flashcard 3: Which has a higher density: gold or silver?

Answer: Gold. Gold has density ~19,300 kg/m³ vs silver's ~10,500 kg/m³.

Flashcard 4: What is the effect of temperature on the density of a gas?

Answer: Density decreases as temperature increases. Thermal expansion reduces mass per unit volume at higher temperatures.

Flashcard 5: What is the density of a substance with 0.3 kg mass and 0.1 m³ volume?

Answer: Density = 3 kg/m³. Apply $\rho = \frac{0.3}{0.1} = 3$ kg/m³.

Flashcard 6: Find the density of an object with mass 10 kg and volume 2 m³.

Answer: Density = 5 kg/m³. Apply $\rho = \frac{m}{V} = \frac{10}{2} = 5$ kg/m³.

Flashcard 7: What is the density of aluminum?

Answer: 2,700 kg/m³. Typical density of aluminum at room temperature.

Flashcard 8: State the formula for pressure in terms of density, gravity, and height.

Answer: Pressure = Density × Gravity × Height. Hydrostatic pressure formula relating fluid properties to depth.

Flashcard 9: What is the formula for mass given density and volume?

Answer: Mass = Density × Volume. Rearranged density formula to solve for mass.

Flashcard 10: What is the density of a liquid with 0.5 kg mass and 500 mL volume?

Answer: Density = 1 kg/L. Convert: 500 mL = 0.5 L, so $\rho = \frac{0.5}{0.5} = 1$ kg/L.

Flashcard 11: Find the mass of an object with density 500 kg/m³ and volume 0.2 m³.

Answer: Mass = 100 kg. Apply $m = \rho V = 500 \times 0.2 = 100$ kg.

Flashcard 12: Which has a higher density: gold or silver?

Answer: Gold. Gold has density ~19,300 kg/m³ vs silver's ~10,500 kg/m³.

Flashcard 13: How does increasing the temperature affect the density of a solid?

Answer: Generally decreases density. Thermal expansion reduces density with increased temperature.

Flashcard 14: What is the SI unit of mass?

Answer: Kilogram (kg). Standard International System unit for quantity of matter.

Flashcard 15: Find the density of a substance with 50 g mass and 25 cm³ volume.

Answer: Density = 2 g/cm³. Apply $\rho = \frac{50}{25} = 2$ g/cm³.

Flashcard 16: Identify the instrument used to measure the density of liquids.

Answer: Hydrometer. Float-based device measuring liquid density via buoyancy.

Flashcard 17: What is the formula for volume given mass and density?

Answer: Volume = $\frac{\text{mass}}{\text{density}}$. Rearranged density formula to isolate volume.

Flashcard 18: What is the SI unit of mass?

Answer: Kilogram (kg). Standard International System unit for quantity of matter.

Flashcard 19: Identify the density of copper.

Answer: 8,960 kg/m³. Typical density of copper at room temperature.

Flashcard 20: Find the mass of water with volume 3 L and density 1 kg/L.

Answer: Mass = 3 kg. Apply $m = \rho V = 1 \times 3 = 3$ kg.

Flashcard 21: Identify the unit of density in the SI system.

Answer: Kilograms per cubic meter (kg/m³). Standard International System unit for density measurements.

Flashcard 22: What is the formula for density?

Answer: Density = $\frac{\text{mass}}{\text{volume}}$. Mass per unit volume, fundamental relationship for material properties.

Flashcard 23: Which material has a greater density: lead or aluminum?

Answer: Lead. Lead has density ~11,340 kg/m³ vs aluminum's ~2,700 kg/m³.

Flashcard 24: How does increasing the temperature affect the density of a solid?

Answer: Generally decreases density. Thermal expansion reduces density with increased temperature.

Flashcard 25: State the relationship between density and buoyancy.

Answer: Higher density objects sink; lower density objects float. Buoyant force depends on relative densities of object and fluid.

Flashcard 26: Find the mass of water with volume 3 L and density 1 kg/L.

Answer: Mass = 3 kg. Apply $m = \rho V = 1 \times 3 = 3$ kg.

Flashcard 27: What is the density of a cube with 3 cm sides and 54 g mass?

Answer: Density = 2 g/cm³. Volume = $3^3 = 27$ cm³, so $\rho = \frac{54}{27} = 2$ g/cm³.

Flashcard 28: Find the density of a substance with 50 g mass and 25 cm³ volume.

Answer: Density = 2 g/cm³. Apply $\rho = \frac{50}{25} = 2$ g/cm³.

Flashcard 29: What is the density of iron?

Answer: 7,870 kg/m³. Typical density of iron at room temperature.

Flashcard 30: Identify the density of mercury.

Answer: 13,600 kg/m³. Very high density liquid metal used in barometers.

Flashcard 31: Identify the density of mercury.

Answer: 13,600 kg/m³. Very high density liquid metal used in barometers.

Flashcard 32: Find the volume of an object with mass 2 kg and density 4 kg/m³.

Answer: Volume = 0.5 m³. Apply $V = \frac{m}{\rho} = \frac{2}{4} = 0.5$ m³.

Flashcard 33: What is the density of iron?

Answer: 7,870 kg/m³. Typical density of iron at room temperature.

Flashcard 34: What is the density of ethanol?

Answer: 789 kg/m³. Typical density of ethyl alcohol at room temperature.

Flashcard 35: What is the density of a substance with 0.3 kg mass and 0.1 m³ volume?

Answer: Density = 3 kg/m³. Apply $\rho = \frac{0.3}{0.1} = 3$ kg/m³.

Flashcard 36: Which has a higher density: ice or liquid water?

Answer: Liquid water. Ice is less dense (~917 kg/m³) than liquid water.

Flashcard 37: What is the density of a gas with mass 2 g and volume 1,000 cm³?

Answer: Density = 0.002 g/cm³. Apply $\rho = \frac{2}{1000} = 0.002$ g/cm³.

Flashcard 38: State the relationship between density and buoyancy.

Answer: Higher density objects sink; lower density objects float. Buoyant force depends on relative densities of object and fluid.

Flashcard 39: What is the density of a cube with 3 cm sides and 54 g mass?

Answer: Density = 2 g/cm³. Volume = $3^3 = 27$ cm³, so $\rho = \frac{54}{27} = 2$ g/cm³.

Flashcard 40: Find the volume of a metal block with mass 1,200 kg and density 6,000 kg/m³.

Answer: Volume = 0.2 m³. Apply $V = \frac{1200}{6000} = 0.2$ m³.

Flashcard 41: What is the SI unit of volume?

Answer: Cubic meter (m³). Standard International System unit for three-dimensional space.

Flashcard 42: Identify the density of water at 4°C.

Answer: 1,000 kg/m³. Maximum density of water occurs at 4°C.

Flashcard 43: Find the density of an object with mass 10 kg and volume 2 m³.

Answer: Density = 5 kg/m³. Apply $\rho = \frac{m}{V} = \frac{10}{2} = 5$ kg/m³.

Flashcard 44: What is the effect of temperature on the density of a gas?

Answer: Density decreases as temperature increases. Thermal expansion reduces mass per unit volume at higher temperatures.

Flashcard 45: What is the density of ethanol?

Answer: 789 kg/m³. Typical density of ethyl alcohol at room temperature.

Flashcard 46: What is the principle that explains buoyancy?

Answer: Archimedes' Principle. Buoyant force equals weight of displaced fluid.

Flashcard 47: Identify the instrument used to measure the density of liquids.

Answer: Hydrometer. Float-based device measuring liquid density via buoyancy.

Flashcard 48: Which has a higher density: ice or liquid water?

Answer: Liquid water. Ice is less dense (~917 kg/m³) than liquid water.

Flashcard 49: What is the SI unit of volume?

Answer: Cubic meter (m³). Standard International System unit for three-dimensional space.

Flashcard 50: Identify the unit of density in the SI system.

Answer: Kilograms per cubic meter (kg/m³). Standard International System unit for density measurements.

Flashcard 51: What is the formula for density?

Answer: Density = $\frac{\text{mass}}{\text{volume}}$. Mass per unit volume, fundamental relationship for material properties.

Flashcard 52: Identify the density of air at sea level.

Answer: Approximately 1.225 kg/m³. Standard density of dry air at sea level pressure.

Flashcard 53: What is the principle that explains buoyancy?

Answer: Archimedes' Principle. Buoyant force equals weight of displaced fluid.

Flashcard 54: What is the density of a liquid with 0.5 kg mass and 500 mL volume?

Answer: Density = 1 kg/L. Convert: 500 mL = 0.5 L, so $\rho = \frac{0.5}{0.5} = 1$ kg/L.

Flashcard 55: How does increasing pressure affect the density of a gas?

Answer: Increases density. Compression reduces volume while maintaining mass.

Flashcard 56: How does increasing pressure affect the density of a gas?

Answer: Increases density. Compression reduces volume while maintaining mass.

Flashcard 57: Calculate the density of a liquid with mass 200 g and volume 250 mL.

Answer: Density = 0.8 g/mL. Apply $\rho = \frac{200}{250} = 0.8$ g/mL.

Flashcard 58: What is the density of aluminum?

Answer: 2,700 kg/m³. Typical density of aluminum at room temperature.

Flashcard 59: Find the mass of an object with density 500 kg/m³ and volume 0.2 m³.

Answer: Mass = 100 kg. Apply $m = \rho V = 500 \times 0.2 = 100$ kg.

Flashcard 60: Which material has a greater density: lead or aluminum?

Answer: Lead. Lead has density ~11,340 kg/m³ vs aluminum's ~2,700 kg/m³.

Flashcard 61: Identify the density of air at sea level.

Answer: Approximately 1.225 kg/m³. Standard density of dry air at sea level pressure.

Flashcard 62: Identify the density of copper.

Answer: 8,960 kg/m³. Typical density of copper at room temperature.

Flashcard 63: What is the density of a gas with mass 2 g and volume 1,000 cm³?

Answer: Density = 0.002 g/cm³. Apply $\rho = \frac{2}{1000} = 0.002$ g/cm³.

Flashcard 64: Find the volume of a metal block with mass 1,200 kg and density 6,000 kg/m³.

Answer: Volume = 0.2 m³. Apply $V = \frac{1200}{6000} = 0.2$ m³.

Flashcard 65: State the formula for pressure in terms of density, gravity, and height.

Answer: Pressure = Density × Gravity × Height. Hydrostatic pressure formula relating fluid properties to depth.