Chapter 38- Heat Flashcards Preview

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Flashcards in Chapter 38- Heat Deck (11)
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1

Experiment to prove:
Heat expands solids, liquids and gasses

Bimetallic strip
Ball and ring apparatus

2

Water

-above 4° water expands
-below 4° water expands too!
-when put under pressure, water will boil at a lower temperature

3

Latent heat

Heat is still added but there is no change in temperature, instead there is a change in state

4

Conduction

HEat is passed by each atom as they vibrate

5

Convection

Gasses and liquids
Molecules carry heat with them as they move

6

Radiation

Heat travels through a vacuum - no medium at all

7

Experiment to prove:
Conduction

Black box with boiling water
Brass, iron, aluminium, copper
Was and thumb tack

8

Experiment to prove:
Convection

Potassium permanganate put in corner of a beaker of water which is heated by Bunsen burner

9

Experiment to prove:
Radiation

Grey and black cans of boiling water
Black can looses heat first

10

Experiment to prove:
Water is an insulator

Test tube with coin pushing ice cube down to the bottom
Heat top of the water with Bunsen burner, ice will not melt

11

Heat

-energy
-expands gasses, solids and liquids