Chapter 8: Year 5
Topic title: States of Matter.
Topic title: States of Matter.
The objectives of this lesson is:
1) In this topic, students able to differentiate and describe the states of matter.
2) Student able to understands the characteristics of gas, liquid and solid.
This content will attached with pictures and videos in order to help the student to engage better in a classroom and learn in fun ways.
Topic that will be learn:
- States of matter.
There are 3 basic states of matter such as the solid, liquid and gas.
1) Solid
- A solid is anything that holds a particular size and shape.
- An apple, a block of wood, and a penny are all solids.
- The particles in a solid are tightly packed and don't make a lot of movements.
- There is not much free space in between the particles, so there is very little room for the particles to move.
- Solid have mass.
Ice is an example of solid
Apple is another example of solid
2) Liquid
- A liquid is anything that has size or volume, but does not have a shape
- Liquids must be contained in a cup, bottle or receptacle in order to have a shape.
- Milk, water and juice are liquids.
- Liquids particles are not so close together as particles of solid.
- They move around and past each other much more freely.
- They have no regular shape or arrangement and move freely.
- Liquid have mass.
Milk is an example for liquid
Another example of liquid is water
3) Gas
- Gases are hard to identify because they have no colour or shape.
- It has no shape or size.
- Take a deep breath and feel your lungs get bigger, your lungs are filling up with air, and air is a combination of many gases.
- The particles in a gas move freely at high speeds.
- There is a lot of free space in between the particles, and they take shape of any container.
- Gases have mass.
The presence of gas
6 important factors that affect evaporation are :
1) Wind assists evaporation; for example in clothes dry faster under a fan.
2) Heat assists evaporation; for example, in summer clothes dry faster than in winter.
3) Increase in surface area exposed assists evaporation; for instance, a wet cloth spread out dries faster than when folded.
4) Dryness assists evaporation; for instance, clothes dry faster in summer than during the monsoon when the air is humid.
5) Rate of evaporation depends upon the nature of the liquid; for example, petrol evaporates faster than water.
6) Vapor pressure: if pressure is applied on the surface of a liquid, evaporation is hindered; consider, for example, the case of a pressure cooker.
.
This video will shows about the explanation of evaporation
Changing states of matter
A simple example is water. If you have a block of ice, you have solid water. Add heat (a form of energy) and the ice melts into liquid water that you could drink (it has reached its melting point). Continue to apply heat, and the water will evaporate and turn into steam, which is water in a gaseous state (it has reached boiling point). This works backwards, too. Gas can cool down (by losing energy) and condense back into liquid water and cool down further into a solid. There is even a process called sublimation where a solid can turn straight into a gas when heat is applied.
Changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter’s chemical makeup or chemical properties. Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization. These changes are shown in Figure below. Each is described in detail below.
The 2 videos will explain about changing states of matter
Teacher used ISSU as the creativity tool for the students in order to learn. Besides that, this tool really help the learning more enjoyable and structuring a lesson become lot easier.
No comments:
Post a Comment