flickr photo credits: (1) bionicteaching (2) bionicteaching (3) Serenae (4) (5) hummingcrow
a Five Card Flickr story by John Mark created Oct 18 2023, 08:10:07 am. Create a new one!
An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.
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