Presentation about Matter

1. MATTER by:
MAMPONENG MAKHABA

2. Matter is anything that has mass and occupies space. It includes everything that we can see touch,
hear, feal and smell.
Matter is made up of tiny particles called atoms which combine to form different substances.

3. Properties of matter
Physical state: matter can exist in three physical states-solid, liquid and gas
Chemical reactivity: matter has the ability to under go chemical reactions where
substances are transformed into new substances
.Malliability : matter can be pressed into flat sheets and pulled into long thin wires.
Conductivity : matter can conduct electricity especially on molten form.
Flexibility: matter can bend into shapes without breaking.

4. 3 States of matter and their properties

5. Solid
• Solids have definite shape and volume. The particles in solids are tightly packed
and vibrate in fixed positions. They have strong intermolecular forces, resulting in
a rigid structure. Solids are highly incompressible and have a high density.

6. Liquid
• Liquids have definite shape but can change their shape to fit the container they
are placed in. The particles in liquid are still close together but have more
freedom to move than in solids. They have weaker intermolecular forces
compared to solid. Liquids are also incompressible but they have lower density
than solid

7. Gas
• Gases do not have definite shape or volume. The particles in a gas are far apart
from each other and move freely in random directions. They have weak
intermolecular forces allowing them to expand and fill any container. Gases are
compressible and have the lowest density.

8. The Kinetic theory of matter explains that as matter is heated , the particles gain
energy and move more vigorously resulting in behaviors such as expansion, flow and
increased pressure depending on a state of matter.
Kinetic Theory Of Matter

9. Kinetic theory of matter in
• Solids: when solid is heated , the particles vibrate faster as they gain more heat
energy. However they remain in fixed patterns until the strong force holding them
weakens, causing solid to expand slightly.

10. • Liquid: when liquid is heated, the particles gain energy and their kinetic energy
increases causing particles to move quickly and randomly. They can slide and move
past each other allowing liquid to flow and take the shape of the container

11. Gases- in Gase state ,the particles are apart and have high energy levels.When heat is applied,
the particles gain more heat energy and move rapidly in all directions . They collide with each
other due to kinetic energy increase tha causes gas to expand and occupy large volume.

12. Conclusion
Examples matter in real life
solid is anything that is tangible, meaning it can be seen or touched. eg car, chair ,etc.
Liquid is anything that can flow.eg water, paraffin ,milk etc
Gas is anything that is intangible, like air meaning it ca neither be seen nor toched.eg
oxygen, carbon dioxide etc.

13. Review questions
1.state any 3 uses of matter in real life.
2.Do u think matter is important in our daily lives? Explain your answer based on
information from the previous slide.
THE END!!

14. References
https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemist
ry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemi
stry)/Physical_Properties_of_Matter/States_of_Matter