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- '@Disable Forward
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- @PlaySoundFile ABB10_01.wav
- @AtGraphic 255,48
- @Picture ABB10_01.bmp
- @At 135,15
- The atom has a nucleus of protons and neutrons.
- @WaitForSoundToFinish
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- @At 135,150
- #b#crClick on the nucleus for a closer look
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- @GoForward 283,50,99,69,0
- @prompt
- @RemoveLastNavigation
- @Erase 134,149,350,23
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- @AtGraphic 130,200
- @Picture ABB10_02.bmp
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- @At 221,211
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- #^#. each proton has a positive charge
- #t#. there are the same number of protons and electrons in an atom
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- @prompt
- @AtGraphic 123,287
- @Picture ABB10_03.bmp
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- @At 221,297
- #^#. neutrons have no electrical charge
- #t#. each neutron and proton have the same mass of 1 unit
- #t#. the number of neutrons in an atom may vary
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- @Enable Forward
- @At 365,370
- #b#crClick on Forward to move on.#b
- #b
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