Another experiment would be to mix two chemicals together and put a thermometer in and measure the temperature.

比方说做这样一个试验,将两种化学试剂混合然后测定反应温度

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And so you can imagine that if you mix these, if you take sodium and you mix it with chlorine you get sodium chloride.

如果将它们混合，以钠和氯反应为例,就会反应得到氯化钠。

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There is some mixture of them.

实际情况是生成物与反应物的混合。

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If you take some from column one or two and you mix it with some from column eight and nine, bingo, you have reaction.

如果你从第一列或者第二列中选出一些元素,将其与第8列或者第9列的元素混合，好，就会发生化学反应。

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