Question

chapter 3 section 2 states of matter behavior of gases before you read after you read this section, you should be able to answer these questions: what affects how a gas behaves? what are the gas laws? what affects the behavior of a gas? gases behave differently than solids or liquids. gas particles have a large amount of space between them. the space that the gas particles take up is the gass volume. its volume depends on its temperature and pressure. temperature helium is a gas that is used to fill balloons. the amount of helium needed to fill a balloon depends on the temperature. temperature is a measure of how fast the particles of an object are moving. when it is hot, the helium particles have more energy. they move faster and bump into the walls of the balloon more often than they do when it is cool. this causes the gas particles to move apart and take up a larger volume. therefore, less helium is needed to fill the balloons on a hot day. if the balloon is heated too much, it might burst. when the temperature is cooler, the helium has less energy. the particles do not hit the walls of the balloon as hard or as often. the helium doesnt take up as much volume. therefore, more helium is needed to fill the balloons when the temperature is lower. the following table describes what happens to gas particles at different temperatures. temperature of gas particles energy of gas particles volume of gas particles 1. 20°c particles have the smallest amount of energy volume is smallest 2. 50°c particles have _ energy than 20°c, but not as much as 80°c volume is _ than 20°c but smaller than 80°c 3. 80°c particles have the _ amount of energy volume is _ study tip brainstorm with a partner, describe situations where boyles law and charless law apply. reading check 1. describe what is temperature? 2. identify does a helium balloon have a larger volume when it is heated or cooled? take a look 3. complete fill in the missing words in the table.

Explanation:

1. The text defines temperature as a measure of how fast the particles of an object are moving.
2. When a helium - balloon is heated, the helium particles have more energy, move faster, bump into the balloon walls more often, causing the gas particles to move apart and the balloon to have a larger volume. When cooled, the opposite occurs.
3. Based on the relationship between temperature, energy of gas particles and volume, at 50°C, the particles have more energy than at 20°C but less than at 80°C, and the volume is larger than at 20°C but smaller than at 80°C. At 80°C, the particles have the most amount of energy and the volume is the largest.

Answer:

1. Temperature is a measure of how fast the particles of an object are moving.
2. A helium balloon has a larger volume when it is heated.

3.

Temperature of gas particles	Energy of gas particles	Volume of gas particles
2. 50°C	particles have more energy than 20°C, but not as much as 80°C	volume is larger than 20°C but smaller than 80°C
3. 80°C	particles have the most amount of energy	volume is the largest