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10 Cards in this Set
- Front
- Back
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what elements make up 96% of the human body?
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C O H N
Carbon Oxygen Hydrogen Nitrogen |
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identify 3 main parts of an atom?
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Central Nucleus
Protons P+ Neutrons 0 (neutral) e- Electrons Negative |
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Electrons orbit the atom, how many electrons on the outer shell make the atom happy
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2 in the first
8 in the second |
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what can atoms do if they don't have the right number of electrons?
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gain electrons
Share electrons donate electrons |
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When atoms donate, share or gain electrons this is called a ?
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Chemical Bond
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when chemicals bond together they form new substance and have now become
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molecules
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explane and ion
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an ion is when an to mom has either gained or lost an electron resulting in a different chemical charge
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explain an ionic bond
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an ionic bond is when 2 oppositely charged ions are attracted to each other and form a new bond
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What is a non polar covalent bond?
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When the electron orbits both atoms equally
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a polar covalent bond is?
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when the atoms don't share the electrons equally.
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