Term
| Levels of Chemical Organization |
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Definition
1) Matter
2) Elements
3) Molecules
4) Compound |
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| Anything with mass and takes up space |
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| A Pure substance: made up of only one kind of atom. (H) |
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| A group of the same ataoms bound together in a group |
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| A group of two or more different types of atoms bonded together. (H20) 3/4 the body weight. |
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Smallest unit of matter
Made up of the following:
Nucleus- central core of an atom and conains subatomic particles.
Proton- Positively charged particle in the nucleus
Nuetron- uncharged particles in the nucleus. |
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| Number of protons in nucleus |
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| Number of protons and nuetron in the nucleus combined. |
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Orbital regions surrounding atomic nucleus that contain electrons.
Electron- negatively charged particle found surrounding the nucleus.
Each energy level can hold a maximum number of electrons.
1st Level- 2 Electrons
2nd Level- 8 Electrons- same for all other levels. |
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Definition
Chemical bonds form to make atoms more stable by making their outer energy levels full.
-Atoms may share electrons, donate electrons, or borrow electrons them to become stable.
-To seperate a compound requires a chemical raction (Test Question) |
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Elements that carry an electrical charge.
This inclused cations, anions, and electrolytes. |
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| Form ions when dissolved in water. Only electrolytes can ionize. |
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Definition
Sodium Chloride
-Dissolved in H20 |
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| Caused by a transfer of electrons between atoms. |
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Definition
| Electrons are shared by the outer shells of atoms. Covalent bonds are strong. |
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Term
| Hydrogen Chemical Bonding |
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Definition
| Positive and negative charges are weakly attracted to form a bond. |
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