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Questions and Answers
What are the three phases of matter?
What are the three phases of matter?
- Solid, gas, and plasma
- Liquid, gas, and plasma
- Solid, liquid, and plasma
- Solid, liquid, and gas (correct)
What is the kinetic molecular theory of gas?
What is the kinetic molecular theory of gas?
- Gas molecules are close together and exert no attractive forces on one another
- Gas molecules are far apart and exert no attractive forces on one another (correct)
- Gas molecules are close together and exert attractive forces on one another
- Gas molecules are far apart and exert attractive forces on one another
What is the unit of measurement for pressure?
What is the unit of measurement for pressure?
- Watt
- Atmosphere (correct)
- Newton
- Joule
What is the relationship between pressure and volume in Boyle's Law?
What is the relationship between pressure and volume in Boyle's Law?
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What physical quantity of a gas is measured in moles?
What physical quantity of a gas is measured in moles?
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Study Notes
- The three phases of matter are solid, liquid, and gas, which differ in shape, volume, forces of attraction among particles, and arrangement of particles.
- Ludwig Boltzmann and James Clerk Maxwell explained the physical properties of gases in terms of the motion of individual molecules.
- The kinetic molecular theory of gas states that gas molecules are far apart, in constant random motion, exert no attractive forces on one another, and have an average kinetic energy that depends on temperature.
- The physical quantities of a gas include pressure, volume, temperature, and amount of substance.
- Pressure is defined as force divided by surface area and is measured in atm, mmHg, torr, or kPa.
- Volume is the space occupied by matter.
- Temperature affects the behavior of gases, with higher temperatures causing faster molecular motion.
- Amount of substance is measured in moles.
- Boyle's Law states that the pressure of a gas at a constant amount and temperature is inversely proportional to its volume.
- The mechanism of a syringe works based on the relationship between pressure and volume.
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