Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com The Nature of Temperature Most people would tell you that temperature is the measure

Copyright 2011 CreativeChemistryLessons.com

The Nature of TemperatureThe Nature of Temperature

• Most people would tell you that Most people would tell you that temperature is the measure oftemperature is the measure ofHOW HOT SOMETHING IS.HOW HOT SOMETHING IS.

• THAT IS FALSE!THAT IS FALSE!

• Most people would tell you that Most people would tell you that temperature is the measure oftemperature is the measure ofHOW HOT SOMETHING IS.HOW HOT SOMETHING IS.

• THAT IS FALSE!THAT IS FALSE!



• Temperature is Temperature is NOTNOT the measure of the measure of ‘HOW HOT SOMETHING IS.’‘HOW HOT SOMETHING IS.’

• Rather, temperature is the measure Rather, temperature is the measure of ‘of ‘HOW FAST SOMETHING ISHOW FAST SOMETHING IS.’.’

• Temperature is Temperature is NOTNOT the measure of the measure of ‘HOW HOT SOMETHING IS.’‘HOW HOT SOMETHING IS.’

• Rather, temperature is the measure Rather, temperature is the measure of ‘of ‘HOW FAST SOMETHING ISHOW FAST SOMETHING IS.’.’

The particles hit the thermometer,The particles hit the thermometer,causing the mercury to expand and rise.causing the mercury to expand and rise.The faster the particles hit,The faster the particles hit,the higher the temperature rises!the higher the temperature rises!So TEMPERATURE = SPEED!So TEMPERATURE = SPEED!



• Think of a freeway.

• Some cars are going fast, some cars are going slow, but you can say that the freeway has an average speed.

• Think of temperature that way.

• Think of a freeway.

• Some cars are going fast, some cars are going slow, but you can say that the freeway has an average speed.

• Think of temperature that way.

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Temperature canTemperature canbe measure in 3 be measure in 3 different units.different units.

°F °C K


TemperatureTemperature

• When heat is added to matter, it When heat is added to matter, it causes the energy of the particles to causes the energy of the particles to increase, giving them more energy increase, giving them more energy (they go faster).(they go faster).

• Temperature is measured with a Temperature is measured with a thermometer in one of three scales, thermometer in one of three scales, Fahrenheit, Celsius or Kelvin.Fahrenheit, Celsius or Kelvin.

• When heat is added to matter, it When heat is added to matter, it causes the energy of the particles to causes the energy of the particles to increase, giving them more energy increase, giving them more energy (they go faster).(they go faster).

• Temperature is measured with a Temperature is measured with a thermometer in one of three scales, thermometer in one of three scales, Fahrenheit, Celsius or Kelvin.Fahrenheit, Celsius or Kelvin.


PressurePressure

• Pressure is when you add more gas Pressure is when you add more gas particles to a rigid container. This particles to a rigid container. This reduces the space each particle has, reduces the space each particle has, causing them to collide with each other, causing them to collide with each other, and the container, with more energy and and the container, with more energy and more often.more often.

• Pressure is measured in one of three Pressure is measured in one of three units, atmospheres (atm),units, atmospheres (atm),kilopascals (kPa) or millimeterskilopascals (kPa) or millimetersof Mercury (mmHg).of Mercury (mmHg).

• Pressure is when you add more gas Pressure is when you add more gas particles to a rigid container. This particles to a rigid container. This reduces the space each particle has, reduces the space each particle has, causing them to collide with each other, causing them to collide with each other, and the container, with more energy and and the container, with more energy and more often.more often.

• Pressure is measured in one of three Pressure is measured in one of three units, atmospheres (atm),units, atmospheres (atm),kilopascals (kPa) or millimeterskilopascals (kPa) or millimetersof Mercury (mmHg).of Mercury (mmHg).


VolumeVolume

• Volume is the amount of space gas Volume is the amount of space gas particles occupy.particles occupy.

• When you decrease the amount of When you decrease the amount of space a gas has to occupy, it causes space a gas has to occupy, it causes the pressure and temperature to the pressure and temperature to increase.increase.

• Volume is measured in one of two Volume is measured in one of two units, Liters (L) or milliliters (mL).units, Liters (L) or milliliters (mL).

• Volume is the amount of space gas Volume is the amount of space gas particles occupy.particles occupy.

• When you decrease the amount of When you decrease the amount of space a gas has to occupy, it causes space a gas has to occupy, it causes the pressure and temperature to the pressure and temperature to increase.increase.

• Volume is measured in one of two Volume is measured in one of two units, Liters (L) or milliliters (mL).units, Liters (L) or milliliters (mL).

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Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com The Nature of Temperature Most people would tell you that temperature is the measure