Online Tutorial Recap

Introduction

• Shout out to students across the Philippines watching the tutorial.
• Emphasis on continuing education despite challenges.
• Students can revisit the tutorial for asynchronous learning on various platforms:
  • Facebook page of DepEd EdTech Unit
  • YouTube channels: DepEd Philippines, DepEd TV

Shout Outs

• Acknowledgment of key educational figures:
  • Dr. Joel Titore Campos (Schools Division Superintendent, STO Las Piñas)
  • Dr. Raquel Emaustero (Education Program Supervisor)
  • Mr. Ignacio Elson Jr. (Principal)
  • Other co-teachers and supportive staff.
• Special mention of the Program Implementation Committee of Brigada Escuela.

Mental Well-being

• Discussion on maintaining sanity during challenging times.
• Encouragement for positivity and keeping the right perspective.
• Inviting students to share how they keep their sanity during the pandemic.

Most Essential Learning Competencies (MELC)

1. Use properties of matter to identify substances and separate them.
   • Recognizing formulas of common chemical substances.
   • Describe separation techniques for mixtures and compounds.

Activity on Intensive and Extensive Properties

• Definitions:
  • Intensive Properties: Properties that do not depend on the amount of matter (e.g., color, boiling point).
  • Extensive Properties: Properties that depend on the amount of matter (e.g., volume, mass).
• Participants engaged in classifying properties:
  • Taste: Intensive Property (IP)
  • Hardness: Intensive Property (IP)
  • Melting Point: Intensive Property (IP)
  • Volume: Extensive Property (EP)
  • Shape: Extensive Property (EP)
  • Density: Intensive Property (IP)
  • Luster: Intensive Property (IP)

Summary of Properties

• Intensive properties:
  • Do not depend on the amount of matter.
  • Examples: Color, boiling point, density.
• Extensive properties:
  • Depend on the amount of matter.
  • Examples: Mass, volume, length.

Properties of Matter

• Physical Properties: Can be observed without changing the substance (e.g., volume, color).
• Chemical Properties: Observed when there is a change in composition (e.g., reactivity, combustibility).

Important Concepts Discussed:

• Density: Helps identify substances, different for various materials (water vs alcohol).
• Heating Process: Different materials react to heating at different rates.
• Solubility: Ability of a substance to dissolve in a solvent (e.g., salt vs sugar).

Chemical Substance Identification Activity

• Common Chemical Formulas:
  • Glycerol: C3H8O3
  • Salt (Sodium Chloride): NaCl
  • Chlorox: NaClO (Sodium Hypochlorite)
  • Ammonia: NH3 (Nitrogen Trihydride)
  • Baking Powder: NaHCO3 (Sodium Bicarbonate)

Separation Techniques

1. Decantation: Separating liquid from solid by pouring.
2. Chromatography: Separates pigments in ink.
3. Centrifugation: Separates components based on density (e.g., blood testing).
4. Distillation: Separates based on boiling point.
5. Filtration: Used to separate solids from liquids using filter paper.
6. Mechanical Separation: Using tools to separate components.
7. Magnetic Separation: Using magnets to separate magnetic materials.

Conclusion

• Reminder for next week's topic: Chemical Names and Formulas.
• Encouragement to revisit DepEd EdTech resources for other subjects.
• Invitation to join the next tutorial session.