"Phenomena Accompanying Chemical Changes" PPT teaching courseware on changes in matter

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Science Edition for Sixth Grade Science Volume 2	pptx	6 MB

"Phenomena Accompanying Chemical Changes" PPT teaching courseware on changes in matter

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Upload Time: 2024-10-08

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"Phenomena Accompanying Chemical Changes" PPT teaching courseware on changes in matter

Part 1: Observe the reaction between copper sulfate solution and iron nails

experiment procedure

Observe the iron nails and copper sulfate solution carefully and record their characteristics.

Hold the iron nail with tweezers, immerse half of the iron nail in the copper sulfate solution, and observe their reaction.

Take it out after two minutes and carefully observe the changes in the liquid and iron nails.

Experimental phenomena

There is a reddish-brown substance attached to the surface of the iron nail

The color of the blue solution will become lighter

After standing for a period of time, a reddish-brown precipitate appeared at the bottom of the solution.

Phenomenon accompanying chemical changes PPT, part 2 content: Phenomenon accompanying chemical changes

Recall what chemical changes we have learned?

What obvious phenomena are accompanied by chemical changes in these substances?

Think and discuss:

When a candle burns and a light bulb turns on, they both emit light and heat. Are they both chemical changes?

Gas is produced when baking soda reacts with white vinegar and when a glass of water is heated. Are they both chemical changes?

The essence of chemical change: the production of new substances

PPT on phenomena associated with chemical changes, part three: key points of this section

When substances undergo chemical changes, they are often accompanied by color changes, light emission, heat generation, gas generation, precipitation and other phenomena. These phenomena can often help us initially judge whether a substance has undergone chemical changes.

Keywords: Free download of science PPT courseware for the second volume of sixth grade in the textbook version, PPT download of phenomena accompanying chemical changes, PPT download of changes in matter, .PPT format;

For more information about the PPT courseware "Phenomena Accompanying Chemical Changes in Changes in Matter", please click on the "Phenomena Accompanying Chemical Changes ppt Changes in Matter" tag.

"Phenomena Accompanying Chemical Changes" PPT download of changes in matter:

"Phenomena Accompanying Chemical Changes" Changes in Matter PPT Download Part One: Exploration of New Knowledge 1. Observe the reaction between copper sulfate solution and iron nails. Experimental materials: anhydrous copper sulfate, water, glass cup, iron nails, tweezers. Experimental steps: 1. Prepare copper sulfate solution..

"Phenomena Accompanying Chemical Changes" Changes in Matter PPT:

"Phenomena Accompanying Chemical Changes" Changes in Matter PPT Part 1: Observe the reaction between copper sulfate solution and iron nails. Prepare a cup of copper sulfate solution, use tweezers to hold the iron nail and immerse part of it in the copper sulfate solution. What phenomena will occur? ? after a while,..

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Update Time: 2024-10-08

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"Phenomena Accompanying Chemical Changes" PPT teaching courseware on changes in matter