The Heating & Cooling Curve

19
CHAPTER 2 The Structure Of The

Transcript of The Heating & Cooling Curve

Page 1: The Heating & Cooling Curve

CHAPTER 2

The Structure

Of The Atom

Page 2: The Heating & Cooling Curve

MATTERMatter is anything that has mass and occupies

space.It is made up of tiny particles which are discrete

and always in motion.This particles can be atoms, molecules or ions.Atom is the smallest, indivisible particle that can

take part in a reaction.Molecules consist of 2 or more elements

combined together chemically.Ions are particles that are charged due to loss or

gain of electrons.Anions are negatively charged particles and

cations arePositively charged particles

Page 3: The Heating & Cooling Curve

THE KINETIC THEORY OF MATTER

The Kinetic Theory of

Matter

Matter is made up of discrete and tiny particles that occupies space

The particles always vibrating and moving about randomly

The particles obtain higher kinetic energy and move in more rapid when the temperature of the matter increases

The particles collide with each other and bounce off in all direction

Page 4: The Heating & Cooling Curve

Matter can exist in 3 physical states:a) Solidb) Liquidc) Gas

Matter can undergo a change its state of matter when heat is supplied or released from it.

Page 5: The Heating & Cooling Curve
Page 6: The Heating & Cooling Curve
Page 7: The Heating & Cooling Curve
Page 8: The Heating & Cooling Curve
Page 9: The Heating & Cooling Curve

THE HEATING CURVEHeat energy

absorbed by the particles causes the particles to vibrate faster.

The kinetic energy increases.

The temperature increases.

The substance exists in solid state.

Page 10: The Heating & Cooling Curve

Heat energy absorbed by the particles is used to overcome the forces of attraction between particles so that the solid turns to liquid.

The temperature remains constant.

This temperature is known as the melting point.

Page 11: The Heating & Cooling Curve

Heat energy is absorbed by the liquid particles.

The particles move faster.

The temperature increases.

Page 12: The Heating & Cooling Curve

Heat energy absorbed by the particles is used to overcome the forces of attraction between particles so that the liquid turns to gas.

The temperature remains constant.

This temperature is known as the boiling point.

Page 13: The Heating & Cooling Curve
Page 14: The Heating & Cooling Curve

THE COOLING CURVEThe particles in the gas lose their kinetic energy and move slower.

The temperature decreases.

Heat is lost/released to the surroundings.

Page 15: The Heating & Cooling Curve

Heat given out to the surroundings is balanced by the heat energy released as the particles attract one another to form a liquid.

Its temperature remains constant.

The substance exists in liquid and gaseous states.

Page 16: The Heating & Cooling Curve

The particles in the liquid lose their kinetic energy and move slower.

The temperature decreases.

Heat is lost/released to the surroundings.

Page 17: The Heating & Cooling Curve

Heat given out to the surroundings is balanced by the heat energy released as the particles attract one another to form a solid.

Its temperature remains constant.

The substance exists in liquid and solid states.

Page 18: The Heating & Cooling Curve
Page 19: The Heating & Cooling Curve

2.