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What triggers a chemical reaction? Video Lecture - Class 10
FAQs on What triggers a chemical reaction? Video Lecture - Class 10
| 1. What triggers a chemical reaction? |  |
Ans. Chemical reactions are triggered by various factors, such as heat, light, electricity, and the presence of a catalyst. These factors provide the necessary energy for the reaction to occur.
| 2. How does heat trigger a chemical reaction? | |
Ans. Heat increases the kinetic energy of the particles involved in the reaction, causing them to move faster and collide more frequently. This increased collision rate leads to a higher chance of successful collisions, which in turn increases the rate of the chemical reaction.
| 3. Can light trigger a chemical reaction? | |
Ans. Yes, light can trigger a chemical reaction in a process called photochemical reaction. Certain chemicals, known as photosensitive substances, can absorb light energy and undergo a chemical change. This is commonly observed in photosynthesis, where plants convert light energy into chemical energy.
| 4. How does electricity trigger a chemical reaction? | |
Ans. Electricity can trigger a chemical reaction through a process called electrolysis. When an electric current passes through an electrolyte solution or a molten compound, it causes the ions to move towards the oppositely charged electrodes. This movement of ions leads to chemical reactions at the electrodes, resulting in the decomposition or synthesis of substances.
| 5. What is the role of a catalyst in triggering a chemical reaction? | |
Ans. A catalyst is a substance that speeds up the rate of a chemical reaction without being consumed in the process. It provides an alternative pathway with lower activation energy, allowing the reaction to occur more easily. Catalysts work by providing a surface for reactant molecules to adsorb and react, reducing the energy barrier and facilitating the formation of products.
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Nov 22, 2024 Last updated |
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