What do you observe?write all your observations

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observe about what?
about rock salt
Whatever happened, you better do it yourself. You can do it, I think it's just simple. I'm/we're not there in your class anyway...
just write things what you saw, hear or whatever with your five senses

Answers

2015-12-06T06:23:32+08:00
The rock salt vibrate. that's my observation.
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