What is chemical reaction that gives off heat called?

What is chemical reaction that gives off heat called?
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Answer :

Exothermic reactions give off heat.
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What is a chemical reaction that gives off energy called?

Description : What is a chemical reaction that gives off energy called?

Last Answer : It is called an "exothermic" reaction.Note. A chemical reaction that absorbs energy is called an "endothermic" reaction.

A compound ‘X’ on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound ‘Y’. ‘X’ also reacts with sodium metal to evolve a colourless gas ‘Z’. Identify ‘X’, ‘Y’ and ‘Z’. Write the equation of the chemical reaction of formation of ‘Y’ and also write the role of sulphuric acid in the reaction. -Science

Description : A compound X' on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound Y'. X' also reacts with sodium metal to evolve a colourless gas Z'. Identify X', Y' ... the chemical reaction of formation of Y' and also write the role of sulphuric acid in the reaction. -Science

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This plant species gives off secretions called Tabasheer which are 97% silica. It is claimed that this is a cure for coughs, asthma and is also an aphrodisiac. It is also true that Tabasheer is chemically inert, but may catalyse some chemical reactions. Where is Tabasheer normally obtained from?

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The radiator of a room contains 10 kilogram of water. If the water gives off 50,000 calories of heat to the room, the drop in temperature of the water is: w) 1 degree Celsius x) 2 degrees Celsius y) 5 degrees Celsius z) 10 degrees Celsius

Description : The radiator of a room contains 10 kilogram of water. If the water gives off 50,000 calories of heat to the room, the drop in temperature of the water is: w) 1 degree Celsius x) 2 degrees Celsius y) 5 degrees Celsius z) 10 degrees Celsius

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Endothermic refers to a process that w) does work x) gives off heat y) loses mass z) absorbs heat

Description : Endothermic refers to a process that w) does work x) gives off heat y) loses mass z) absorbs heat 

Last Answer : ANSWER: Z -- ABSORBS HEAT

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Description : As water solidifies it does one of the following: w) gives off heat and contracts x) gives off heat and expands y) takes in heat and contracts z) takes in heat and expands

Last Answer :  ANSWER: X -- GIVES OFF HEAT AND EXPANDS

A chemical reaction in which there is absorption of heat is called

Description : A chemical reaction in which there is absorption of heat is called

Last Answer : endothermic reaction.

A chemical reaction in which heat is liberated is called

Description : A chemical reaction in which heat is liberated is called

Last Answer : exothermic reaction.

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Description : What is a chemical reaction that releases energy by light or heat?

Last Answer : Need answer

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Description : What is the best term to describe a chemical reaction that absorbs heat energy?

Last Answer : What is the answer ?

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Chemical reaction in which heat is evolved?

Description : Chemical reaction in which heat is evolved?

Last Answer : Exothermic reaction

Chemical reaction in which heat is ab- sorbed?

Description : Chemical reaction in which heat is ab- sorbed?

Last Answer : Endothermic reaction

Chemical reaction in which heat is re- leased?

Description : Chemical reaction in which heat is re- leased?

Last Answer : Exothermic reaction

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Last Answer : (B) Activation energy

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