Atoms

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  • Created by: joshd
  • Created on: 11-03-14 19:28
Describe the nucleus as part of the structure of an atom
1-It's in the middle of the atom.2-It contains protons and neutrons.3-Has an overall positive charge because protons are positively charged and neutrons have no charge.
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Describe the nucleus as part of the structure of an atom (2)
4-Almost the whole mass of the atom is concentrated in the nucleus.5-It's tiny compared to the atom as a whole.
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Describe the electrons as part of the structure of an atom
1-They move around the nucleus. 2-Have a negative charge. 3-Tiny compared to the nucleus, but as they move around they cover a lot of space.
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Describe the electrons as part of the structure of an atom (2)
4- The size of their orbits determines how big the atom is. 5- They virtually have no mass. 6-They occupy shells (energy levels) around the nucleus.
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What is the number of protons equal to?
The number of electrons.
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QU: The charge on the --------------- is the same size as the charge on the --------------, but ----------------
The charge on the ELECTRONS is the same size as the charge on the PROTONS, but OPPOSITE.
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What does the number of protons always equal to in an atom?
The number of electrons.
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The number of neutrons isn't fixed, but what is it usually about the same as?
The number of protons.
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Describe the features of protons
Protons are heavy and positively charged. Relative mass: 1. Relative charge: +1
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Describe the features of neutrons
Neutrons are heavy and neutral (no charge). Relative mass: 1. Relative charge: 0
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Describe the features of electrons
Electrons are tiny and negatively charged. Relative mass: 1/2000. Relative charge: -1
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Card 2

Front

Describe the nucleus as part of the structure of an atom (2)

Back

4-Almost the whole mass of the atom is concentrated in the nucleus.5-It's tiny compared to the atom as a whole.

Card 3

Front

Describe the electrons as part of the structure of an atom

Back

Preview of the front of card 3

Card 4

Front

Describe the electrons as part of the structure of an atom (2)

Back

Preview of the front of card 4

Card 5

Front

What is the number of protons equal to?

Back

Preview of the front of card 5
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