"Material Around Us" Changes in Matter PPT Download

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"Material Around Us" Changes in Matter PPT Download

Part One Content: New Lesson Learning

(1) What materials are around us?

Are air, electricity, fire, and sound all matter?

Air is a mixture of nitrogen, oxygen, carbon dioxide and other gases, and is a substance.

Electricity is produced by the directional movement of electric charges.

Fire is the phenomenon in which matter emits light and heat during combustion.

Sound is produced by the vibration of an object. Without the vibration of an object, there would be no sound.

Discovery: The actual things that we can observe directly or indirectly are all matter, and the entire world is made of matter.

(2) Matter is changing

Things around us change, such as:

When cooking, the rice becomes rice

When writing, writing is left on the paper

The water on the road slowly turns into steam and disappears into the air

Natural rock weathering turns into sand

Some substances change very quickly, while some substances change more slowly and are even difficult to detect.

Material PPT around us, part 2: expansion and extension

Sometimes candles emit black smoke when burning. Why does this happen? It turns out that black smoke is formed when the carbon contained in the candle flame wick burns. Black smoke also contains trace amounts of paraffin solids. People who use candles for a long time will feel astringent in their noses. At the same time, when burning candles, they will consume oxygen in the air and cause temporary dizziness. So try to minimize the use of candles.

Summary of this lesson

The world is made of matter, and it is always changing. Some changes can produce new matter, while other changes do not produce new matter, but only change the original shape and size.

Materials around us PPT, the third part: one lesson, one practice

1. Fill in the blanks

1. The world is made up of ( ).

2. Matter is always changing. Some changes only change ( ) and ( ) of matter, and some changes produce ( ).

3. Matter is ( ), and ( ) has rules to follow.

2. Judgment questions

1. Sound is produced by vibrating objects. Without vibration, there will be no sound. ( )

2. Material changes are absolute, some occur naturally, and most are caused by people's conscious activities. ( )

3. Sound, light, and electric lights are not matter. ( )

Materials around us PPT, Part 4: Homework

Let’s talk about which substances around us change and which substances do not change?

Keywords: Free download of Chinese PPT courseware for the second volume of the sixth grade in the textbook version, download of the material around us PPT, download of the change of matter PPT, .PPT format;

For more information about the "Changes of Matter, Material Around Us" PPT courseware, please click on the "Change of Matter ppt, Material Around Us" ppt tag.

"Material Changes and Us" Material Changes PPT download:

"Material Changes and Us" Material Changes PPT Download Part One: Import the new lesson and fill it out. 1. The world around us is made of _____, and matter changes. 2. Changes in matter are generally divided into two categories: ____________________. 3...

"Material Changes and Us" Material Changes PPT:

"Material Changes and Us" Material Changes PPT Part One: Material Changes The world around us is made of matter, and matter will change. Changes in matter are generally divided into two categories: physical changes and chemical changes. Chemical changes are accompanied by many phenomena...

"Controlling the Speed ​​of Iron Rusting" PPT teaching courseware on changes in matter:

"Controlling the Speed ​​of Iron Rusting" PPT teaching courseware on changes in matter Part one: Exploration: Is iron rusting related to air? Experimental conclusion: Iron rusting is the result of the combined action of water and air. What does the speed of iron rusting depend on? The speed of iron rusting and the speed of water...

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Update Time: 2024-09-09

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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