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Richard from Cleveland, OH's Resources


please classify this

64. Classify each change as physical or chemical. Even if you are incorrect in your assessment, you should be able to defend why you chose as you did. (a) Grape juice turns to wine. (b)...


which element remains

If two protons and two neutrons are removed from the nucleus of an oxygen-16 atom, a nucleus of which element remains?


why are they empty

. The atoms that make up your body are mostly empty space, and structures such as the chair you’re sitting on are composed of atoms that are also mostly empty space. So why don’t you fall...


How would you do it

Imagine that you want to create an activity for a group of children to simulate the periodic table. Suggest items that you may use and how they may be organized in rows and columns. Be creative. Share...

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