BALANCING CHEMICAL EQUATION SCIENCE GRADE 10

balancing equation

1. GRADE 10 SCIENCE EMILY M. MANOGUID Subject Teacher

2. • How are you feeling today? • Are you ready to explore our lesson ?

3. • Emulate the emoji that tells on how are you feeling today

4. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. CA_B_N

5. ACTIVITY1: EleNames CARBON

6. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. H_L_UM

7. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. HELIUM

8. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. M_N_ANE_E

9. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. MANGANESE

10. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. I_D_NE

11. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. IODINE

12. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. I_D_NE

13. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. CA_B_N

14. ACTIVITY1: EleNames CARBON

15. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. A_UMI_U_

16. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. ALUMINUM

17. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. R_ENI_M

18. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. RHENIUM

19. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. A_T_N_UM

20. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. ACTINIUM

21. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. T_T_N_UM

22. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. TITANIUM

23. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. O_YG_N

24. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. OXYGEN

25. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. N_T_OG_N

26. ACTIVITY1: EleNames Directions: Give the names of the chemical symbols presented. NITROGEN

27. ACTIVITY1: EleNames 1. What word is formed by combining all chemical symbols? 2. What are the indicators in chemical reactions?

28. ACTIVITY1: EleNames

29. Chemical Reaction - is the process where a material is transformed into a new one, possessing a new composition.

30. LESSON OBJECTIVE: General Objective: Apply the principles of conservation of mass to chemical reactions. (S10MT-IVe-g-23) Specific Objective: Define chemical equation Balance a chemical equation; and Apply Law of Conservation of mass in balancing chemical equations.

31. Activity 2 : 4 PICS 1 WORD B_LAN_IN_

32. Activity 2 : 4 PICS 1 WORD BALANCING

33. Activity 2 : 4 PICS 1 WORD C_EM_C_L

34. Activity 2 : 4 PICS 1 WORD CHEMICAL

35. Activity 2 : 4 PICS 1 WORD EQ_A_IO_

36. Activity 2 : 4 PICS 1 WORD EQUATION

37. BALANCING CHEMICAL EQUATIONS

38. BALANCING CHEMICAL EQUATIONS

39. What is a chemical equation? Chemical equation - Describes a chemical change. Parts of an equation: 2Ag + H 2 S Ag 2 S + H 2 Reactant Product Reaction symbol

40. Reactants and Products Reactant - The chemical(s) you start with before the reaction. Written on left side of equation. Product - The new chemical(s) formed by the reaction. Right side of equation.

41. Subscripts and Coefficients Subscript - shows how many atoms of an element are in a molecule. EX: H 2 O 2 atoms of hydrogen (H) ‏ 1 atom of oxygen (O) ‏ Coefficient - shows how many molecules there are of a particular chemical. EX: 3 H 2 O Means there are 3 water molecules.

42. A Chemical Reaction 2H 2 + O 2  2H 2 O

43. Law of Conservation of Mass In a chem. rxn , matter is neither created nor destroyed. In other words, the number and type of atoms going INTO a rxn must be the same as the number and type of atoms coming OUT. If an equation obeys the Law of Conservation, it is balanced.

44. An Unbalanced Equation CH 4 + O 2  CO 2 + H 2 O Reactant Side Product Side 1 carbon atom 4 hydrogen atoms 2 oxygen atoms 1 carbon atom 2 hydrogen atoms 3 oxygen atoms

45. A Balanced Equation CH 4 + 2 O 2  CO 2 + 2 H 2 O Reactant Side Product Side 1 carbon atom 4 hydrogen atoms 4 oxygen atoms 1 carbon atom 4 hydrogen atoms 4 oxygen atoms

46. Rules of the Game 1. Matter cannot be created or destroyed. 2. Subscripts cannot be added, removed, or changed. 3. You can only change coefficients. 4. Coefficients can only go in front of chem. formulas...NEVER in the middle of a formula. A few extra tips: Try balancing big formulas first; save free elements for last. If the same polyatomic ion appears on both sides of the equation, it’s usually okay to treat it as one unit. There is no one particular way to balance equations. Some equations are harder to balance than others and might require some creativity to solve.

47. Balancing Equations Balance the following equation by adjusting coefficients. reactants products N H N 2 + H 2  NH 3 2 2 1 3 2 2 6 3 6

48. Balancing Equations Balance the following equation by adjusting coefficients. KClO 3  KCl + O 2 reactants products K Cl O 1 1 1 1 3 2 3 2 2 2 6 6 2 2 2

49. Balance the following equation: Activity: Balancing Equation   ___ Mg + ___ Cl 2  ___ MgCl 2 ___ Na + ___ Cl 2  ___ NaCl

50. What is the importance of knowing how to balance chemical equation?

51. What are the different steps in balancing equation? Why is balancing equation important?

52. Activity: Balance the following equations 1.NO 2 → O 2 + N 2 2. Pb(s) + FeSO 4 ( aq ) → PbSO 4 (s) + Fe 3. CaCO 3 → CaO + CO 2 4. MgI 2 + Mn(SO 3 ) 2 → MgSO 3 + MnI 4 5. AgNO 3 + Cu→ Cu(NO 3 ) 2 + Ag  

53. Through a poster present a chemical reaction involved in biological and industrial processes affecting life and the environment Example: Photosynthesis Use 1/8 size illustration board for the said activity

54. Thank you! See you in the next Lesson. . .