"Material Around Us" Material Changes PPT Courseware 5

Description

"Material Around Us" Material Changes PPT Courseware 5

Materials around us

The world is made of matter.

Are air, electricity, fire, and sound matter?

Matter - Something that actually exists that can be observed directly or indirectly.

The entire world is made of matter.

Can matter change?

Is there any unchanging matter in the world?

Rocks, houses, roads, are they changing too?

Changes in physical properties such as shape, volume, and state of matter without producing new matter are called physical changes.

When substances change, new substances are produced, which is called chemical changes.

Accompanying phenomena: light and heat, color change, gas generation, precipitation, etc.

Summarize:

Material changes are absolute, some occur naturally, but most are caused by people's conscious activities.

One type only changes the form, size, position, shape, etc. of the handheld but does not produce new matter.

Another type of change creates new substances.

Short answer questions:

What changes occur to rocks in nature?

Answer: Under the long-term combined effects of atmosphere, sunlight, water, organisms, etc., rocks will slowly cause the rocks to break, become loose, and change their mineral composition, eventually turning into fine sand and soil.

What are the similarities and differences between the changes that occur when a match burns and the changes that occur when a log breaks?

Answer: When a match burns, it emits light and heats up. After burning, the match turns into ashes; after the match is broken, its shape only changes.

The same thing: the shapes all change.

Difference: Matches produce other substances when burned, while firewood does not.

Keywords: Teaching courseware on changes in matter, teaching courseware on matter around us, download science PPT courseware for sixth grade volume 2 of the Education Science Edition, download downloadable science slide courseware for sixth grade, download PPT courseware on changes in matter, download PPT courseware on matter around us, .PPT format;

For more information about the "Changes of Matter, Materials Around Us" PPT courseware, please click on the "Changes of Matter, Materials Around Us" PPT courseware, please click on the "Changes of Matter, Materials Around Us" PPT tab.

"Material Around Us" PPT teaching courseware on changes in matter:

"Material Around Us" PPT teaching courseware on the change of matter Part 1: Matter is changing When cooking, rice becomes rice. When I write, I leave traces on the paper. After it rains, the accumulated water on the road slowly turns into water vapor and disappears into the air. since..

"Material Around Us" PPT download of changes in matter:

"Material Around Us" Changes in Matter PPT Download Part One: 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. ..

"Material Around Us" Changes in Matter PPT:

"Materials Around Us" Changes in Matter PPT Part 1 Content: The world is made of matter What materials are around us? The world is made of matter. The books, erasers, tables, lights, running water, houses, trees, animals, and plants around us include...

File Info

Update Time: 2024-11-19

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

Preview