Heat vs. Temperature

SLIDE 31

Temperature is the measure of the average

kinetic energy of the particles

(molecules/atoms) in an object.

Heat is the transfer of

energy!!!

Question: What happens when an ice cube is added to warm soda?

● Heat is transferred from the soda to the ice.

Celsius Scale■ Celsius Scale: Most commonly used in most of the world except

the United States and a few other places. Unit of temperature is called a degree. Based on the boiling and freezing points of water.

■ Boiling Point: The temperature at which water boils. 100o C at sea level.

■ Freezing Point: The temperature at which water freezes. 0o C at sea level.

Another Scale…

■ Kelvin is another way of measuring temperature.

■ Scientists use Kelvin to explain the behaviour of gases.

■ “Absolute Zero” is measured in Kelvin – which is the coldest possible temperature

■ 0 Kelvin = -273 ºC

KNOW THESE

Conversion formulae - Don’t stress over 0F to 0C - this is rarely used in Chemistry BUT converting from 0C to K is !!!!!!

I know, I know, but try these just for

practice because you never know what they

will put on the EOC!!!

What will freeze faster - hot water or cold water?

You think you know…...BUTResearch the Mpemba effect and take notes!!!