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《2、研究物质性质的方法和程序》优质课PPT课件下载
? 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
钠是一种银白色的金属;熔点为97.81摄氏度,沸点是882.9摄氏度;密度是0.97g/cm-3
因为钠的性质非常活泼,具有很强的腐蚀性,所以不能用手触摸.
若作实验室是用的量太大,会产生爆炸.
? 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
? 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
? 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
? 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
? 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
1。碳的燃烧
2。澄清石灰水中通入二氧化碳的量
3。铁在氧气中燃烧和在空气中生锈
第2节
研究物质性质的方法和程序
怎样才能更科学地认识物质的性质呢？
交流·研讨
观察和实验法
分类、比较法
1、在初中化学中，你认识了哪些物质？你是通过什么方法来研究它们的性质的？