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: What is the density of iron?

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

Flashcard 2: 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 3: 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 4: What is the density of aluminum?

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

Flashcard 5: 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 6: How does increasing the temperature affect the density of a solid?

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

Flashcard 7: Identify the density of copper.

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

Flashcard 8: Identify the unit of density in the SI system.

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

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

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

Flashcard 10: 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 11: What is the density of ethanol?

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

Flashcard 12: What is the formula for mass given density and volume?

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

Flashcard 13: 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 14: 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 15: 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 16: Identify the density of air at sea level.

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

Flashcard 17: 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 18: How does increasing pressure affect the density of a gas?

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

Flashcard 19: Identify the density of water at 4°C.

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

Flashcard 20: 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 21: 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 22: 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 23: 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 24: 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 25: Identify the density of air at sea level.

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

Flashcard 26: Identify the unit of density in the SI system.

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

Flashcard 27: 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 28: 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 29: What is the density of aluminum?

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

Flashcard 30: How does increasing the temperature affect the density of a solid?

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