38334994
Description
Flashcards by Natalie Minor, updated more than 1 year ago
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Created by Natalie Minor
over 1 year ago
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| Question | Answer |
| Subscript | Shows how many of that atom there is |
| Physical changes | - Physically changes, not chemically - ex. crushing, bending, stretching |
| Reactants | - left side of reaction - what reacts to create the product |
| Products | - right side of reaction - what is produced from the reaction |
| Coeffecient | shows how many of a particular molecule there is |
| Superscript | Show the charge of the atom |
| Endothermic | - feels cooler - takes in energy from surroundings - more energy on product side |
| Exothermic | - feels warmer - releases energy into surroundings - more energy on reactanct side |
| Bohr model | diagram with rings that shows how many electrons an element has |
| Lewis structure | diagram with dots that shows only the valence electrons of an element |
| Number of electrons in an atom with no charge | number of electrons is the same as the number of protons |
| compund | - chemically bonded - molecule - can be chemically broken down - two or more different substances |
| Molecule | - chemically bonded - two or more atoms |
| Element | - purest substance - can not be broken down anymore |
| Law of Conservation of Mass | - Mass is never created nor destroyed, it only changes forms - same with energy |
| Kinetic energy | energy in motion |
| Potential energy | stored energy |
| chemical energy | - stored in chemical bonds of atoms - potential energy - allows chemical bonds to break/form - ex. the food we eat, natural gas |
| gravitational energy | - the energy of position or place - potential energy - chandelier, dam |
| nuclear energy | - stored in the nucleus of atoms - potential energy - ex. sun/stars fusion (combining), nuclear power plant fission (separating) |
| elastic energy | -stored in objects by the application of force - compressed string, stretch rubber band - potential energy |
| electrical energy | - movement of electrons - kinetic energy - lightning, power lines |
| radiant/electromagnetic energy | - kinetic energy - electromagnetic energy that travels in vertical transverse waves - visible light, x-rays |
| thermal energy | - internal energy in substances - kinetic energy - all matter has it, temperature measures it - more thermal energy, faster atoms move - heating soup, melting ice cream |
| motion/mechanical energy | - kinetic energy - movement of objects and substances from one place to another - moving car, leaping frog |
| sound energy | - kinetic energy - movement of energy through substances in longitudinal waves - gunshot, stomping |
| chemical change | - cause of chemical reaction - signs include bubbles, changes in color, heat, etc. |
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