2. Learning Objectives:
The learners demonstrate understanding of
materials undergo changes due to oxygen and
heat;
Investigate changes that happen in materials
under the following conditions; presence or lack
of oxygen and application of heat. And;
Identify the physical properties of solid
materials such as ductility, malleability, flexibility,
elasticity, porosity, hardness and brittleness.
1.
2.
3.
3. Activity #1:
Classify each materials as useful or harmful.
Old news paper
vegetable scraps
old toys
lotion
insect repellent
medicines
paint
drugs
4. Let us Review 💡
Identify the following objects as solid, liquid, gas.
Write your answer on the blank after the number.
Vinegar
Stars
Chalk
Smoke
Paper
Air
1.
2.
3.
4.
5.
6.
15. Assignment
Assignment
List atleast 3 examples of solid materials in your
home that possess the following properties.
1. Porosity
2. Brittleness
3. Elasticity