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To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

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Atomic Weights

element weights

ElementWeight
hydrogen 1
sodium 23
potassium 39
magnesium 24
calcium 40
manganese 55
iron 56
cobalt 59
nickel 59
copper 64
zinc 65
silver 108
mercury 200
gold 197
aluminium 27
carbon 12
nitrogen 14
phosphorus 31
oxygen 16
sulfur 32
chlorine 35.5
Created by: mandnrock