Objective. Heat is a very powerful form of energy. Although there are other forms of energy like...

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Transcript of Objective. Heat is a very powerful form of energy. Although there are other forms of energy like...

Page 1: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Objective

Page 2: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used agent for initiating all chemical changes.Various classes of substances undergo decomposition to various extents when heated. This process is known as Thermal Decomposition. It gives rise to a number of newer products based on the conditions of temperature, pressure, operations etc. It is therefore important to understand the thermal behaviour pattern of most of the common class of compounds.

Action of Heat on Substances

Page 3: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Oxides of Metals

There are certain exceptional oxides that do decompose or change their colour on heating. The oxides of mercury and silver, when heated, decompose into their respective metals and oxygen.

Page 4: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Higher Oxides of Metals

"Higher oxides are those oxides, which have more oxygen than the normal oxides."

Page 5: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Metals Carbonates

                                                                                                                                                                                                                                                                                                                                                                                                                                                                

                                                 Carbonates are compounds of various metals containing the carbonate radical CO3

2-.

Page 6: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

More Examples

Page 7: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Metals BicarbonatesBicarbonates are compounds of various metals containing the bicarbonate radical . Bicarbonates when heated get decomposed to form their respective carbonates, water and carbon dioxide.

Page 8: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.
Page 9: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Metals Nitrates

Page 10: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.
Page 11: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.
Page 12: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Metals SulphiteSulphite  → Oxide + Sulphur dioxide

Page 13: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Metals SulphateSulphates are compounds of various metals containing the sulphate radical  . Sulphates when heated very strongly decompose to give their respective oxides, sulphur dioxide and oxygen.Sulphate → Oxide + Sulphur dioxide + Oxygen

Page 14: Objective. Heat is a very powerful form of energy. Although there are other forms of energy like light and electricity, heat is the most commonly used.

Metals Hydrous Salts

The salts, which contain water of crystallisation are known as hydrous salts. When heated, they lose their water of crystallisation, and become anhydrous powders. They also lose their crystalline shape and sometimes their colour too.


Energy and Heat

Energy and Heat

Energy / Thermodynamics (Heat)

Energy / Thermodynamics (Heat)

UNIT V HEAT TRANSFER Heat Energy and Heat Transfer ...

UNIT V HEAT TRANSFER Heat Energy and Heat Transfer ...

Chapter 16. Energy is the ability to do work or produce heat. Heat is commonly measured in joules or calories. 1 calorie = 4.184 joules.

Chapter 16. Energy is the ability to do work or produce heat. Heat is commonly measured in joules or calories. 1 calorie = 4.184 joules.

HEAT / THERMAL ENERGY

HEAT / THERMAL ENERGY

ENERGY & HEAT -

ENERGY & HEAT -

Heat ICP Chapter 11. Heat/Temp/Energy Heat – flow of thermal energy – Heat flows from the warmer object (higher energy) to the cooler one (lower energy)

Heat ICP Chapter 11. Heat/Temp/Energy Heat – flow of thermal energy – Heat flows from the warmer object (higher energy) to the cooler one (lower energy)

Heat energy to mechanical energy

Heat energy to mechanical energy

1 Chapter 3 Matter and Energy. 2 CHAPTER OUTLINE Energy & Heat Energy & Heat Temperature Scales Temperature Scales Specific Heat Specific Heat

1 Chapter 3 Matter and Energy. 2 CHAPTER OUTLINE Energy & Heat Energy & Heat Temperature Scales Temperature Scales Specific Heat Specific Heat

Heat Transfer or Heat Energy

Heat Transfer or Heat Energy

Energy and Chemical Reactions Energy is transferred during chemical and physical changes, most commonly in the form of heat.

Energy and Chemical Reactions Energy is transferred during chemical and physical changes, most commonly in the form of heat.

Chapters 5 and 19. Energy is commonly defined as the capacity to do work or transfer heat. Work is defined as the energy used to cause and object.

Chapters 5 and 19. Energy is commonly defined as the capacity to do work or transfer heat. Work is defined as the energy used to cause and object.

Heat Energy Transfer SNC2D. The Transfer of Heat Energy There are 3 different mechanisms by which heat energy may be transferred:

Heat Energy Transfer SNC2D. The Transfer of Heat Energy There are 3 different mechanisms by which heat energy may be transferred:

Solar Energy Heat and Light. Energy Can take many different forms –____________ –Heat –____________.

Solar Energy Heat and Light. Energy Can take many different forms –____________ –Heat –____________.

Sime Tpl hings - Idaho Power · 2017-11-21 · printing one), you’re using energy. At home, you commonly use energy in several ways: • To heat things up. Activities like cooking,

Sime Tpl hings - Idaho Power · 2017-11-21 · printing one), you’re using energy. At home, you commonly use energy in several ways: • To heat things up. Activities like cooking,

Heat Pumps - Desco Energy Heat Pumps... · 2018-02-16 · Condenser Coil – heat exchanger used to reject heat energy. Evaporator Coil – heat exchanger used to absorb heat energy.

Heat Pumps - Desco Energy Heat Pumps... · 2018-02-16 · Condenser Coil – heat exchanger used to reject heat energy. Evaporator Coil – heat exchanger used to absorb heat energy.

Heat – Thermal Energy

Heat – Thermal Energy

Thermal / Heat Energy

Thermal / Heat Energy

Specific Heat High School P. Science. Heat Energy Different substances have varying capacities for storing energy within their molecules. Heat energy.

Specific Heat High School P. Science. Heat Energy Different substances have varying capacities for storing energy within their molecules. Heat energy.

Energy Heat Work Enthalpy Heat Capacity · 5.07.2010 · Energy –1: Energy Heat Work Enthalpy Heat Capacity ... BTU = British Thermal Unit ... Heat and work are equivalent ways

Energy Heat Work Enthalpy Heat Capacity · 5.07.2010 · Energy –1: Energy Heat Work Enthalpy Heat Capacity ... BTU = British Thermal Unit ... Heat and work are equivalent ways