Iron articles are painted because applying paints prevents them from rusting. When painted, the contact of iron articles from moisture and air is cut off. Hence, rusting is prevented their presence is essential for rusting to take place. For more answers visit to website: https://www.tiwariacademy.cRead more
Iron articles are painted because applying paints prevents them from rusting. When painted, the contact of iron articles from moisture and air is cut off. Hence, rusting is prevented their presence is essential for rusting to take place.
Exothermic Reaction: Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions. For example: Burning of methane in air gives heat and light. CH₄ (g)+O₂ (g) → CO₂ (g)+2H₂O(g)+heat Endothermic Reaction: Reactions that absorb energy or require energy inRead more
Exothermic Reaction: Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions.
For example: Burning of methane in air gives heat and light.
CH₄ (g)+O₂ (g) → CO₂ (g)+2H₂O(g)+heat
Endothermic Reaction: Reactions that absorb energy or require energy in order to proceed are called endothermic reactions. For example: Silver chloride absorb the heat from sunlight and get decomposed into Silver and Chlorine.
2AgCl(s) Sunlight → 2Ag(s)+Cl₂(g)
A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation. The law of conservation of mass states that mass can neither be created nor destroyed. Hence, in a chemical reaction, the total mass of reactants should beRead more
A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation. The law of conservation of mass states that mass can neither be created nor destroyed. Hence, in a chemical reaction, the total mass of reactants should be equal to the total mass of the products. It means that the total number of atoms of each element should be equal on both sides of a chemical equation. Hence, it is for this reason that chemical equations should be balanced.
(a) Hydrogen gas and iron chloride are produced. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-1/
Why do we apply paint on iron articles?
Iron articles are painted because applying paints prevents them from rusting. When painted, the contact of iron articles from moisture and air is cut off. Hence, rusting is prevented their presence is essential for rusting to take place. For more answers visit to website: https://www.tiwariacademy.cRead more
Iron articles are painted because applying paints prevents them from rusting. When painted, the contact of iron articles from moisture and air is cut off. Hence, rusting is prevented their presence is essential for rusting to take place.
For more answers visit to website:
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What does one mean by exothermic and endothermic reactions? Give examples.
Exothermic Reaction: Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions. For example: Burning of methane in air gives heat and light. CH₄ (g)+O₂ (g) → CO₂ (g)+2H₂O(g)+heat Endothermic Reaction: Reactions that absorb energy or require energy inRead more
Exothermic Reaction: Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions.
For example: Burning of methane in air gives heat and light.
CH₄ (g)+O₂ (g) → CO₂ (g)+2H₂O(g)+heat
Endothermic Reaction: Reactions that absorb energy or require energy in order to proceed are called endothermic reactions. For example: Silver chloride absorb the heat from sunlight and get decomposed into Silver and Chlorine.
2AgCl(s) Sunlight → 2Ag(s)+Cl₂(g)
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-1/
What is a balanced chemical equation? Why should chemical equations be balanced?
A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation. The law of conservation of mass states that mass can neither be created nor destroyed. Hence, in a chemical reaction, the total mass of reactants should beRead more
A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation. The law of conservation of mass states that mass can neither be created nor destroyed. Hence, in a chemical reaction, the total mass of reactants should be equal to the total mass of the products. It means that the total number of atoms of each element should be equal on both sides of a chemical equation. Hence, it is for this reason that chemical equations should be balanced.
For more answers visit to website:
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What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.
(a) Hydrogen gas and iron chloride are produced. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-1/
(a) Hydrogen gas and iron chloride are produced.
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Fe2O3 + 2Al gives Al2O3 + 2Fe
(d) displacement reaction. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-1/
(d) displacement reaction.
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