What happens during a chemical reaction?

What happens during a chemical reaction?
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A chemical reaction involves the breaking of chemical bonds between the atoms or groups of atoms of reacting substances and rearrangement of atoms making new bonds to form new substances.
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(a) Write the essential condition for the following reaction to take place: 2AgBr—-> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical reaction 2FeS04 — chemical-reactions-and-equations-chapter-wise-important-questions-class-10-science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

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Last Answer : Answer. This reaction is used in photography. (c) Slaked lime is formed with hissing sound and lot of heat is envolved.

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Description : What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential ... decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Last Answer : A The reaction follows an alternative pathway of lower activation energy.

What happens to the chemical properties of substances during a chemical reaction?

Description : What happens to the chemical properties of substances during a chemical reaction?

Last Answer : Need answer

What happens to the total mass of the reactants in a chemical reaction?

Description : What happens to the total mass of the reactants in a chemical reaction?

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What happens when a chemical bond is formed? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor absorbed Correct (4) Answer – (1) energy is always absorbed Explanation: If a bond is broken, energy is released; and if a bond is formed, energy must have been absorbed. As these occur, a change in the chemical energy of the system also occurs. Within each bond of a molecule is an experimentally determined amount of enemy that upon the breaking of that bond is released into the chemical system. The energy within these bonds are 'stored' and can be easily thought of as potential energy. Upon the breaking of these bonds the energy is released thereby creating usable energy.

Description : What happens when a chemical bond is formed? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor ... as potential energy. Upon the breaking of these bonds the energy is released thereby creating usable energy.

Last Answer : Silver nitrate solution is kept in brown bottles in laboratory because - (1) it reacts with ordinary white bottles (2) brown bottles stops the passage of light through it (3) brown bottles do not react with it (4) brown bottles react with it

What happens when a chemical bond is formed ? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor absorbed

Description : What happens when a chemical bond is formed ? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor absorbed 

Last Answer : energy is always absorbed

What happens to meat during chemical change?

Description : What happens to meat during chemical change?

Last Answer : It rots and molds

What happens to chemical bonds during chemical change?

Description : What happens to chemical bonds during chemical change?

Last Answer : What is the answer ?

What happens during chemical reactions From: Apex?

Description : What happens during chemical reactions From: Apex?

Last Answer : energy is given off or absorbed

Describe an activity to observe what happens when quick lime is added to water taken in a beaker. State two important observations and name the type of reaction taking place. -Chemistry

Description : Describe an activity to observe what happens when quick lime is added to water taken in a beaker. State two important observations and name the type of reaction taking place. -Chemistry

Last Answer : Answer. Aim: To observe what happens when quicklime is added to water taken in a beaker. Materials Required:- Quicklime (calcium oxide), water, beaker.Procedure: 1. Take 5 g of calcium oxide in a ... example for each of decomposion reaction carried out with help of (i) Electricity (ii) Heat (iii)

What happens in oxidation reaction ?

Description : What happens in oxidation reaction ?

Last Answer : Electron loss occurs in oxidation reaction.

What happens in a reduction reaction? (1) addition of Oxygen (2) addition of Nitrogen (3) addition of Hydrogen (4) None of the above

Description : What happens in a reduction reaction? (1) addition of Oxygen (2) addition of Nitrogen (3) addition of Hydrogen (4) None of the above

Last Answer : (3) addition of Hydrogen Explanation: In terms of Oxygen transfer, oxidation is gain of oxygen; reduction is loss of oxygen. However, in terms of hydrogen transfer, oxidation is loss of hydrogen, reduction is gain of hydrogen.

What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper? (1) There is a crackling sound (2) There is a violent explosion (3) There is no reaction (4) The paper ignites

Description : What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper? (1) There is a crackling sound (2) There is a violent explosion (3) There is no reaction (4) The paper ignites

Last Answer : (2) There is a violent explosion Explanation: When solid Potassium Permanganate (KMnO4) is mixed with pure glycerol or other simple alcohols, it will result in a violent combustion ... Permanganate is an extremely powerful oxidizer which spontaneously ignites after coming in contact with glycerol.

Benzene undergoes Friedel-Crafts reaction with isopropyl alcohol in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Isopropylbenzene (d) Nothing happens

Description : Benzene undergoes Friedel-Crafts reaction with isopropyl alcohol in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Isopropylbenzene (d) Nothing happens

Last Answer : Isopropylbenzene

What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? (1) There is a crackling sound. (2) There is a violent explosion. (3) There is no reaction. (4) The paper ignites.

Description : What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? (1) There is a crackling sound. (2) There is a violent explosion. (3) There is no reaction. (4) The paper ignites.

Last Answer : There is a violent explosion.

What happens According to Einstein's equation if 1 kg of mass disappears during a reaction?

Description : What happens According to Einstein's equation if 1 kg of mass disappears during a reaction?

Last Answer : the law of conseration of mass is violated.

What happens during the fusion reaction of the suns core?

Description : What happens during the fusion reaction of the suns core?

Last Answer : Nuclear fusion, the source of all the energy so generously radiated by the Sun, does two things: it converts hydrogen into helium (or rather, makes helium nuclei from protons) and it converts mass to energy. ... If the fusion reactions in the core become too weak, a star can and does collapse.

What happens when a substance loses oxygen during reaction? It is said to be (a) Oxidised (b) Reduced (c) Both (d) None of the above

Description : What happens when a substance loses oxygen during reaction? It is said to be (a) Oxidised (b) Reduced (c) Both (d) None of the above

Last Answer : (b) Reduced

What happens when a substance gains oxygen during reaction? The substance gets – (a) Oxidised (b) Reduced (c) Both oxidized and reduced (d) None of the above

Description : What happens when a substance gains oxygen during reaction? The substance gets – (a) Oxidised (b) Reduced (c) Both oxidized and reduced (d) None of the above

Last Answer : (a) Oxidised