Science 8

1. Module 8
Science 9
Third Quarter

2. Review of the molar mass:
Example: Sugar, C6H12O6

4. 6Y
Activity 1. Problem Solving
You are given 10 minutes to
accomplish the activity.

5. Let’s Analyze

6. Let’s Analyze

7. Let’s Analyze
The label on a bag of fertilizer states the
percentages of N, P, and K.
The roots of the plants absorb the nutrients from
the soil. Potassium is the mineral responsible for a
healthy root system. If you were a farmer, which of
the following fertilizers are you going to use?
K2SO4 KCl K2O K2CO3

8. Let’s Ponder
What are the significance of
percent composition in our daily
life?
What are the percent composition
of a compound tell you?

9. How to solve percent
composition?
What do we need?
Compound
Molar mass
Formula

10. Quiz Time!
Directions: Read and analyze the given items.
Write the letter of the correct answer in a
quarter-sheet pad paper.

11. Quiz Time!

12. Quiz Time!

13. Quiz Time!

14. Homework!
Directions: Write all possible information as your
answer on your notebook.
What is empirical formula and
molecular formula?