| Category | Format | Size |
|---|---|---|
| Hunan Education Edition Fourth Grade Science Volume 2 | pptx | 6 MB |
"Burning Candle" PPT
Description
Hunan Education Edition Fourth Grade Science Volume 2, Burning Candle PPT
Part 1: Think about it
think about it
The small handful of ash remaining after burning is obviously much lighter than the original charcoal, but the weight of the entire closed container has not changed. Why is this?
Experimental methods and steps:
1. Pour a small amount of clear lime water into a clean beaker, leaving lime water droplets on the wall of the cup.
2. Place the beaker over the burning candle.
3. Observe the changes in lime water on the wall of the cup.
Experimental phenomenon: The lime water droplets on the wall of the cup turned milky white.
Explanation of the experimental phenomenon: The burning of the candle produces gas, which turns the lime water into milky white.
Burning Candle PPT, Part 2: Lavoisier’s Research
Lavoisier's research
The burned charcoal becomes lighter, and the air in the container becomes heavier, and the added weight of the air is exactly equal to the weight of the burned charcoal. It can be seen that the charcoal does not disappear without a trace during combustion, but forms a new gaseous substance together with oxygen.
This gas is what people now call "carbon dioxide".
Carbon dioxide can make clear limewater cloudy.
(This phenomenon is often used to test for the presence of carbon dioxide.)
Keywords: Hunan Education Edition fourth grade science PPT courseware for the second volume free download, burning candle PPT download, .PPT format;
For more information about the "Burning Candles" PPT courseware, please click the "Burning Candles" ppt tag.
"Burning Candle" PPT courseware:
The second volume of Science for Grade 4 in Hunan Education Edition, Burning Candle PPT Courseware Part One: Asking Questions Objects in nature are ever-changing, such as seedlings being unearthed, puppies growing up, classmates growing taller, etc. These are all changes of living objects, then, there is no living thing...
File Info
Update Time: 2024-06-12
This template belongs to science courseware Hunan Education Edition Fourth Grade Science Volume 2 industry PPT template
"Burning Candle" PPT 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 "Burning Candle" PPT 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
"Burning Candle" PPT, 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.)
Preview
Related Search:
