The document outlines a Grade 10 science lesson focused on chemical equations and reactions. It includes activities for identifying chemical symbols, defining chemical equations, and balancing equations while emphasizing the law of conservation of mass. Students are expected to engage in various activities to apply these concepts, culminating in a project presenting a chemical reaction relevant to biology and industry.

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 + H2S Ag2S + H2
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: H2
O
• 2 atoms of hydrogen (H)
• 1 atom of oxygen (O)
• Coefficient - shows how many molecules there are of
a particular chemical.
• EX: 3 H2
O
• Means there are 3 water molecules.

42. A Chemical Reaction
• 2H2
+ O2
 2H2
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
• CH4 + O2  CO2 + H2O
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
CH4
+ 2O2
 CO2
+ 2H2
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
N2
+ H2
 NH3
2
2
1
3
2
2
6
3
6

48. Balancing Equations
• Balance the following equation by adjusting
coefficients.
KClO3
 KCl + O2
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
1.___ Mg + ___ Cl2  ___ MgCl2
2.___ Na + ___ Cl2  ___ 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.NO2→ O2+ N2
2. Pb(s) + FeSO4(aq) → PbSO4(s) + Fe
3. CaCO3→ CaO+ CO2
4. MgI2+ Mn(SO3)2→ MgSO3+ MnI4
5. AgNO3+ Cu→ Cu(NO3)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. . .