Questions
What are physical and chemical changes?
What is a balanced chemical equation?
Describe the significance of a balanced chemical equation?
Define Oxidation?
What is Reduction?
What are skeletal chemical equation?
When is an equation said to be balanced?
What is hit and trial method?
Significance of balanced chemical equation
Mole and mass relationship
What is a combination reaction.give eg
What are the types of chemical reaction?
Write chemical equation
a. Zinc metal reacts with acqueous hydrochloric acid to produce a solution of zinc chloride and hydrogen gas.
b. When solid mercury oxide is heated,liquid mercury and oxygen gas are produced.
14. Balance following equation:
H2SO4(aq)+NaOH(aq)-> Na2SO4(aq)+H2O
b. Al(s)+Hcl (aq) -> AlCl3(aq) +H2g
15. What is an edothermic and exothermic reaction?
16. What is a decomposition Reaction?
17. What is thermal decomposition.give eg.
18. What is redox reaction.egs
19. What do you mean by reducing agent?
20. What do you mean by . oxidizing agent?
21. What is a disinfectant?
22. What is corrosion.egs?
23. What is Rancidity?
24. What are the methods to . prevent corrosion?
25. What is galvanisation?
26. What is a chemical . equation?
27. What are precipitation . reaction?
28. In what way is a . displacement reaction . different from a double . displacement reaction? Egs.
29. Is there any Oxidation . without Reduction. Justify
30. Write chemical equation and balance them.
a. Carbon + Oxygen -> Carbon di oxide
b. Hydrogen + Chlorine -> Hydrogen Chloride
c. Barium Chloride+ Sodium sulphate
Balancing chemical equation