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27 Cards in this Set
- Front
- Back
Matter |
anything that occupies space |
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Elementss |
cannot be broken down by another substance |
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Proton |
positively charged particle |
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Nuetron |
electrically neutral |
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Electron |
Negatively charged particle |
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Atomic Symbol and Mass |
weight |
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Isotopes |
same number of protons, different number of neutrons, identical behavior |
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Compound |
substance of two or more elements combined in a fixed ratio |
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Molecule |
atoms held together by covalent bonds |
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Covalent Bonds |
2 atoms share a pair of electrons |
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Polar Covalent Bonds |
electrons shared unequally |
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Nonpolar Covalent Bonds |
electrons shared equally |
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Solutes |
substance that is dissolved |
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Solution |
liquid consisting of a mix of 2 or more substances |
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Hydrophobic |
water repels |
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Hydrophilic |
water absorbs |
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Buffer |
minimize changes in Ph |
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Ph-scale |
determines how basic or acidic a solution is |
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Base |
1-6 on the ph scale donates hydrogen |
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Acid |
8-14 on ph scale reduces hydrogen |
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CHNOPS + Ca & K |
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfate Calcium and Potassium |
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Adhesions |
clinging of one substance to another |
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Cohesion |
tendency of molecules to stick together |
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Thermal Energy |
random movement of atoms and molecules |
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Evaporative Cooling |
water cooling, molecules with greatest energy leave |
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Solvent |
dissolving agent |
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Biodiversity |
The variety of living things |