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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Atom |
The basic unit of matter |
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Nucleus |
The central and most important part of an atom |
Protons and neutrons make this up. |
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Electron |
Negatively charged particle |
Outside the nucleus |
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Element |
A pure substance consisting entirely of one type of atom |
Carbon, hydrogen, oxygen are example of this |
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Isotope |
Atoms of the same element that differ in the number of neutrons they contain. |
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Compound |
Substance formed by the chemical combination of two of more elements or compounds in definite proportions. |
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Ionic bonds |
Formed when electrons are transferred from an atom to another. |
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Ion |
Atoms with a positive or negative charge |
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Covalent bonds |
Forms when electrons are shared between two or more atoms |
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Molecule |
Smallest unit of most compounds |
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Van see Waals forces |
The slight attraction that develops between oppositely charged regions of nearby molecules |
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Cohesion |
The attraction between similar molecules |
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Adhesion |
Attraction between different molecules |
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Mixture |
A material composed of two or more element or compounds physically mixed together but not chemically |
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Solution |
A mixture of two or more substances in which the molecules are distributed evenly |
Water |
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Solute |
Dissolved in a solvent to create a solution |
Blood |
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Solvent |
The substance that does the dissolving |
Ranges from 0 to 14. 7 is neutral. |
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Suspension |
The mixture of water and undissolved particles |
pH below 7 |
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pH scale |
The measurement system used to indicate the concentration of hydrogen ions in a solution |
pH above 7buff |
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Acid |
Compound that forms hydrogen ions in solution |
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Base |
Compound that forms hydroxide ions in solution |
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Buffer |
A weak acid or base that reacts with a strong acid or base to prevent sharp and sudden changes in pH. |
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