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Biology Ch. 6 Part 1
Bio Ch. 6 Part 1 Basic Chemistry
| Question | Answer |
|---|---|
| polar molecule | having a positive end and a negative end |
| capillary action | ability of water to move up thin tubes (as in the roots of a plant) |
| atom | smallest unit of matter |
| element | a substance that can't be broken down into simpler substances; made of only one type of atom |
| compound | a substance composed of two or more elements chemically combined |
| covalent bond | force of attraction between atoms due to shared electrons |
| ionic bond | force of attraction between two oppositely charged atoms |
| chemical reaction | bonds between atoms are formed or broken causing new compounds or molecules to be formed |
| mixture | combination of substances in which the individual components retain their own properties and do NOT form new compounds |
| solution | a homogeneous mixture in which one or more substances is dissolved in another substance |
| acid | any substances that releases H+ when dissolved in water (has a low pH) |
| base | any substance that releases OH- when dissolved in water (has a high pH) |
| pH | measure of how acidic or basic a substance is |
| hydrogen bond | weak bond formed between positively charged hydrogen atoms and other negatively charged atoms |
| ion | atom with an excess charge due to gaining or losing electrons |
| chemical equation | a shorthand way of writing what happens in a chemical reactions ; uses chemical formulas to express reactants and products |
| proton | positively charged subatomic particle that is found in the nucleus of an atom |
| neutron | a subatomic particle with NO charge that is found in the nucleus of an atom |
| electron | subatomic particle with a negative charge that orbits in the energy levels outside the nucleus of an atom |
| suspension | a heterogeneous mixture with large particles that settle out over time |
| colloid | a heterogeneous mixture with medium sized particles that do not settle out over time |
| solvent | the bulk of a solution; the substance that particles are dissolved in |
| solute | particles that are dissolved in a solution |
| periodic table | organizes elements according to their physical and chemical properties |
| reactants | elements or compounds present at the beginning of a chemical reactions |
| products | elements or compounds formed as a result of a chemical reaction |
| adhesion | when polar molecules are attracted to other polar molecules |
| cohesion | when polar molecules are attracted to themselves |
| homogeneous mixture | a uniform mixture , that appears the same throughout |
| heterogeneous mixture | a mixture with components that remain distinct; is not uniform throughout the mixture |
Created by:
Mrs. Meeks SHS
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