Answer the following questions very breifly
1. What happens when the milk is left at room temperature during summer?
2. Write a chemical equation when magnesium is burnt in air to give magnesium
oxide.
3. A substance under goes chemical reactions to produce simpler products,
what type of reaction is this?
4. Why do copper vessels lose their shine when exposed to air?
5. Which gas is produced by the action of dilute hydrochloric acid on zinc
granules?
6. Fe2O3 + 2Al ¾¾® Al2O3 + 2Fe
The above reaction is an example of which type of reaction.
7. Name the type of reaction in which energy is absorbed.
8. Why does the colour of copper sulphate solution change when an iron nail is
dipped into it?
9. Give an example of decomposition reaction which proceeds by absorbing
electric energy.
10. Why do we balance the chemical equation?
Answers
Answered by
23
Hey friend I can help you with some of the questions :
1.When milk is left at room temperature, oxidation occurs and the growth of microorganisms occur due to which the milk gets sour.
2. 2Mg+O2------> 2MgO
3. Decomposition Reaction
4.They get corroded due to oxidation.
5.Hydrogen gas
7. Endothermic Reaction
8. Due to reaction of iron and copper, iron being more reactive displaces copper and changes the colour of the solution along with the deposition of copper on the nail.
9. When we pass electricity in a solution of Na-Cl and water NaCl is broken in ions. Or electrolysis of water is the decomposition of water into oxygen and hydrogen gas due to an electric current being passed through the water. If playback doesn't begin shortly, try restarting your device.
10. We need to balance a chemical equation to satisfy tha law of conservation of mass.
Hope helped...
Plz mark as brainliest..
1.When milk is left at room temperature, oxidation occurs and the growth of microorganisms occur due to which the milk gets sour.
2. 2Mg+O2------> 2MgO
3. Decomposition Reaction
4.They get corroded due to oxidation.
5.Hydrogen gas
7. Endothermic Reaction
8. Due to reaction of iron and copper, iron being more reactive displaces copper and changes the colour of the solution along with the deposition of copper on the nail.
9. When we pass electricity in a solution of Na-Cl and water NaCl is broken in ions. Or electrolysis of water is the decomposition of water into oxygen and hydrogen gas due to an electric current being passed through the water. If playback doesn't begin shortly, try restarting your device.
10. We need to balance a chemical equation to satisfy tha law of conservation of mass.
Hope helped...
Plz mark as brainliest..
PalakVerma1:
Plz mark brainliest......
Answered by
4
it's the ans of 2
4.copper vessels get rust when exposed to air for a long time and it gets a coating of green substance. it is a mixture of copper hydroxide and copper carbonate.
5. I think hydrogen gas.
8. it is so because iron is more powerful than copper. hence iron take out copper from its solution and form iron sulphate which is green in colour.
4.copper vessels get rust when exposed to air for a long time and it gets a coating of green substance. it is a mixture of copper hydroxide and copper carbonate.
5. I think hydrogen gas.
8. it is so because iron is more powerful than copper. hence iron take out copper from its solution and form iron sulphate which is green in colour.
Attachments:
Similar questions