Flashcards
Atom Structures_1
Cards in this deck (9)
- 1what are elements made up of?atoms
- 2what does an atom have in the middle of it?a nucleus
- 3what does a nucleus contain?It contains positively charged particles called protons, and neutral particles called neutrons.
- 4what are electrons?Electrons are negatively charged particles which move around the nucleus in circular paths called orbits, shells or energy levels.
- 5what is a atomic number?number of protons of an atom
- 6what does the number of prtons equal?Number of protons equals the number of electrons in an atom; therefore, an atom is electrically neutral.
- 7what are Isotopes?Isotopes are atoms of the same element having different mass numbers.
- 8what is The distribution of electrons in various shells / energy levels?The distribution of electrons in various shells or energy levels in an atom is called the electronic configuration of that atom.
- 9what holds atoms together?The force of attraction that holds atoms together in a molecule is known as a chemical bond.
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- Flashcards on Atom Structures_1, created by Heena Ahmed on 28/06/2015.
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- Heena Ahmed
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- Created by Heena Ahmed · Jun 28, 2015
- Copied by Heena Ahmed · Jun 28, 2015
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