Common-Core/ Grade 7
Science MCQ Based On What are chemical elements and atoms
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Common-Core Grade 7 - 7 What are chemical elements and atoms
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Charge on electron
A particle with a negative electrical charge that is found outside an atom's nucleus is an
electron.
Electronic configuration of elements
A very small piece of matter with a positive electric charge passing through it, that is produced in a nuclear reaction
The chemical property of an element depends upon electronic configuration.
Elements include only one type of element.
Think about protons and electrons
Uranium's atomic number
The first model of the atom was given by JJ Thomson.
Particle number is the factor through which atoms of different elements differ from each other.
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