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2k19 PS Chemistry
Review for Final Exam Chemistry Part
| Question | Answer |
|---|---|
| study of mater and its changes | chemistry |
| variable plotted on x axis ; being tested | independent variable |
| variable plotted on y axis ; the results | dependent variable |
| subatomic particle with positive charge | proton |
| subatomic particle with negative charge | electron |
| subatomic particle with no charge | neutron |
| state of matter: definite shape + definite volume | solid |
| turn blue pH paper red | acids |
| turn red pH paper blue | bases |
| amount of matter an object has | mass |
| state of matter: definite volume + indefinite shape | liquid |
| conditions kept the same during an experiment | constants |
| group that does not receive the independent variable(s) | control |
| electrons found furthest away from nucleus | valence |
| Group Name of 8A (18) elements | Noble Gases |
| Group Name of 1A (1) elements | Alkali Metals |
| Group Name of 7A (17) elements | Halognes |
| Group Name of 2A (2) elements | Alkali Earth Metals |
| negative ions from groups 5A , 6A , 7A | anions |
| positive ions from groups 1A, 2A, 3A | cations |
| starting material in a chemical reaction | reactants |
| speeds up a chemical reaction | catalyst |
| ending material in a chemical reaction | products |
| arrangement of elements on current periodic table | increasing atomic number |
| has pH of 7 and no change to litmus paper | neutral |
| compound made by sharing valence electrons | covalent |
| compound made by transferring valence electrons | ionic |
| electrons closest to the nucleus | core |
| horizontal rows on periodic table (7) | period |
| vertical columns on periodic table (18) | group / family |
| type of chemical equation that does NOT have equal numbers on both sides | skeleton |
| numbers NEVER changed to balance chemical equation | subscripts |
| numbers added/changed to balance a chemical equation | coefficient |
| SI unit for temperature | Kelvin |
| SI unit for mass | kilograms |
| SI unit for time | seconds |
| SI unit for length | meters |
| Visual representation of valence electrons only | Lewis Dot Structure |
| says that 8 is the stable number of valence electrons | octet rule |
| having 2 atoms when alone like N , O , F | diatomic |
| having 4 atoms when along like P | tetratomic |
| change in number of electrons | ion |
| change in number of protons | different element |
| change in number of neutrons | isotope |
| neutral group of elements joined with covalent bonds | molecule |
| logical steps used to solve scientific problem/question | scientific method |
| things worn during lab to keep you safe | PPE (personal protective equipment) |
| last 2 things done after lab is finished | clean up and wash hands |
| most common state of matter in universe | plasma |
| going from solid to liquid | melting |
| going from liquid to solid | freezing |
| going from liquid to gas | boiling / evaporation |
| going from gas to liquid | condensation |
| going from solid to gas | sublimation |
| prefix for 2 | di |
| prefix for 3 | tri |
| prefix for 1 | mono |
| prefix for 4 | tetra |
| prefix for 5 | penta |
Created by:
cadetjt
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