People's Education Edition Physics for Grade 8, Volume 2
People's Education Edition Ninth Grade Physics Complete Book
Shanghai Science Edition Ninth Grade Physics
People's Education Edition Physics for Grade 8, Volume 1
Shanghai Science Edition 8th Grade Physics
Beijing Normal University eighth grade physics volume one
Lu Jiao Edition Ninth Grade Physics Volume 1
Lu Jiao Edition Ninth Grade Physics Volume 2
Beijing Normal University Ninth Grade Physics Volume 1
Lu Ke Edition High School Physics Compulsory Course One
Guangdong and Shanghai Edition Ninth Grade Physics Volume 1
People's Education Press High School Physics Compulsory Course II
Guangdong and Shanghai version of eighth grade physics volume 2
Beijing Normal University Ninth Grade Physics Volume 2
Lu Jiao Edition Eighth Grade Physics Volume 2
Lu Jiao edition eighth grade physics volume 1
Category | Format | Size |
---|---|---|
Lu Jiao Edition Ninth Grade Physics Volume 2 | pptx | 6 MB |
Description
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 2
Matter is made of molecules
Substances have different _______ when they are in different states. The volume of most substances changes when they change from liquid to solid. When the state of a substance changes, the volume changes, mainly because the molecules that make up the substance change on ___________.
In solid substances, the forces between molecules are relatively ______, and their arrangements are relatively _____
Comparison of forces between gas molecules______Comparison of arrangements between molecules______
The diameter of a molecule is only about 10-10m, so the number of molecules in an object is huge. Modern large computers can calculate 10 billion (1010) times per second. If people could count at that speed, it would take more than 80 years for a person to finish counting the molecules in 1cm3 of air!
Summary and reflection one
You observed:
1. The color in the air bottle becomes darker
2. The color of the nitrogen dioxide bottle becomes lighter
Discussion: What does the darker color in the air bottle mean? What does the lighter color in the nitrogen dioxide bottle mean?
Your conclusion: Gas molecules are constantly moving
Observation and Thinking 2
You observed:
1. The interface becomes blurred
2. The color of the water becomes darker
Discussion: What does the blurring of the interface mean? What does the darker color of the water mean?
Your conclusion: Liquid molecules are constantly moving
induction
Solids, liquids, and gases all have this phenomenon:
When different substances come into contact with each other, they will enter each other. In physics, this phenomenon is called diffusion.
What does the phenomenon of diffusion indicate?
The molecules of all objects are constantly moving irregularly
summary
Diffusion occurs in solids, liquids, and gases.
The phenomenon of diffusion illustrates that the molecules of all objects are constantly moving irregularly.
Since the motion of molecules is related to temperature, this irregular motion is called thermal motion of molecules.
The higher the temperature, the more violent the random motion of molecules.
think for a while
Why does it take a long time to pickle pickles before they become salty? And when cooking, the vegetables become salty in a short period of time?
Doubt: Since molecules are constantly moving, why do the molecules in solids and liquids not fly apart, but always come together to maintain a certain volume?
For example:
①Why don’t the molecules spread out like sand?
②Why is the iron wire not easy to break?
③Why is it difficult for stones to compress?
4. Summary
1. Matter is composed of molecules.
2. The molecules of all objects are constantly moving irregularly (molecular thermal motion)
3. There are both attraction and repulsion forces that interact between molecules, and both are indispensable.
5. Use your brain to learn physics
1. Drugs "destroy oneself, bring harm to the family, and endanger society." my country adopts the anti-drug policy of "banning planting, banning trafficking, banning, and banning smoking".
How can a trained police dog detect heroin, ecstasy and other drugs contained in passengers' suitcases?
2. Writing chalk on the blackboard and sticking things with glue are all because of the main role of _________ between molecules
3. In the fruit shop, you can smell the fragrance of fruits. This is a ______ phenomenon
4. When two small drops of mercury come together, they become a large drop of mercury. This shows that there is a ______ force between the mercury molecules. Mercury should not be compressed, which shows that there is a ______ force between the molecules. After placing duck eggs in salt water for a period of time, the duck eggs become salty. This is a ______ phenomenon.
Keywords: heat and energy teaching courseware, molecular thermal motion teaching courseware, Shandong Education Edition ninth grade physics PPT courseware download, ninth grade physics slide courseware download, heat and energy PPT courseware download, molecular thermal motion PPT courseware download,. PPT format;
For more information about the "Heat and Energy Thermal Movement of Molecules" PPT courseware, please click the "Heat and Energy ppt Thermal Movement of Molecules ppt" tab.
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 4:
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 4 Do you understand the scale of matter? Light-years: The diameter of the Milky Way is approximately 100,000 light-years. Kilometers: China has a vast territory, about 5,200 km from east to west and 5,500 km from north to south. Meter: Yao Ming’s height is 2.26 m. mm: ..
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 3:
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 3 1. The composition of matter: *The molecules are very small, with a diameter of about 10-10m *The number of molecules is huge. Normally, there are about 2.71019 molecules in 1cm3 of air. If the speed of the number of people can To reach 10 billion per second, it takes...
"Thermal Motion of Molecular" Heat and Energy PPT courseware:
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 1. Matter is composed of molecules. If you break the cup, the fragments will still be glass. After being divided many times and even ground into powder, the particles become smaller and smaller. If the points continue to be divided, is there a limit? Keep matter as it is..
File Info
Update Time: 2024-09-08
This template belongs to Physics courseware Lu Jiao Edition Ninth Grade Physics Volume 2 industry PPT template
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 2 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Thermal Motion of Molecular" Heat and Energy PPT Courseware 2 is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Thermal Motion of Molecular" Heat and Energy PPT Courseware 2, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)