{"id":16131,"date":"2023-06-30T01:24:06","date_gmt":"2023-06-29T19:54:06","guid":{"rendered":"https:\/\/apboardsolutions.in\/?p=16131"},"modified":"2023-07-01T17:44:53","modified_gmt":"2023-07-01T12:14:53","slug":"ap-board-8th-class-physical-science-notes-chapter-8","status":"publish","type":"post","link":"https:\/\/apboardsolutions.in\/ap-board-8th-class-physical-science-notes-chapter-8\/","title":{"rendered":"AP Board 8th Class Physical Science Notes Chapter 8 Combustion, Fuels and Flame"},"content":{"rendered":"

Students can go through AP State Board 8th Class Physical Science Notes<\/a> Chapter 8 Combustion, Fuels and Flame to understand and remember the concept easily.<\/p>\n

AP State Board Syllabus 8th Class Physical Science Notes Chapter 8 Combustion, Fuels and Flame<\/h2>\n

\u2192 Burning material in the presence of air (oxygen) is called combustion<\/p>\n

\u2192 The substances which burn in the air are called combustible<\/p>\n

\u2192 Oxygen or air is needed for combustion to take place<\/p>\n

\u2192 During the process of combustion, heat and light are given out.<\/p>\n

\u2192 The lowest temperature at which a substance catches fire is called its ignition temperature.<\/p>\n

\u2192 Inflammable substances have very low ignition temperature,<\/p>\n

\u2192 The type of combustion in which material suddenly burns into flames without the application of any apparent cause is called spontaneous combustion<\/p>\n

\u2192 The type of combustion in which material burns rapidly and produces heat and light is called rapid combustion.<\/p>\n

\u2192 The amount of heat energy produced on complete combustion of 1 kg of fuel is called the calorific value of that fuel.<\/p>\n

\u2192 In the blue zone of the candle flame vaporized wax burns completely due to a good supply of oxygen.<\/p>\n

\"AP<\/p>\n

\u2192 Combustion: Burning o material in the presence of air (oxygen) is called combustion.<\/p>\n

\u2192 Combustible and Non – combustible materials: The materials which burn when brought near a flame ore are called combustible materials. The materials which do not burn are called non-combustible materials.<\/p>\n

\u2192 Ignition temperature: The lowest temperature at which a substance catches fire is called ignition temperature.<\/p>\n

\u2192 Inflammable material: The material which has a very low ignition temperature easily catches fire called an inflammable material.<\/p>\n

\u2192 Spontaneous combustion: The type of combustion in which material suddenly burns into flames without application of any apparent cause is called spontaneous combustion.<\/p>\n

\u2192 Rapid combustion: The type of combustion in which material burns rapidly and produces heat and light is called rapid combustion.<\/p>\n

\u2192 Explosion: The reaction \u00a1n which there is the liberation of heat, light, sound, and a large amount of gas is called an explosion.<\/p>\n

\u2192 Fuels: The materials which burn when brought near a flame producing heat and light are called fuels.<\/p>\n

\"AP<\/p>\n

\u2192 Calorific value: The amount of heat energy produced on complete combustion of 1 kg of fuel is called the calorific value of that fuel.
\n\"AP
\n\u2192 Joseph Priestly (1733 – 1804):<\/p>\n