20581876
Description
Flashcards by Constance Randall, updated more than 1 year ago
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Created by Constance Randall
almost 5 years ago
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| Question | Answer |
| Atoms | Submicroscopic particles. Building blocks of matter |
| Molecules | Atoms formed into a particular structure |
| Hypothesis | An educated guess. |
| Experiment | Procedure used to confirm or refute the hypothesis |
| Scientific Law | A brief statement of previous observations and future predictions. |
| Law of Conservations of Mass | In chemical reactions matter is neither created or destroyed |
| Theory | A model explaining nature's actions and reasons of occurrence |
| Atomic Theory | Atoms can not be created or destroyed. A reaction can occur however the mass and particles will remain the same |
| Matter | Anything that occupies space. Also many atoms forming together for stability |
| Substance | Specific matter |
| State | Physical form |
| Composition | Composition, states of matter Solid,Liquid,Gas |
| Solid | Tightly packed particles |
| Liquid | Partially tight particles |
| Gas | Loose and free moving |
| Crystalline | Atoms/Molecules that are in a long-range repeating pattern |
| Amorphous | Atoms/Molecules that are NOT in a long-range repeating pattern |
| Heterogeneous | Composition(solid,liquid,gas) varies through regions |
| Homogeneous | Composition(S,L,G) is the same throughout the region |
| Pure Substance | Only one component Composition does not change |
| Mixture | 2 components Composition does change |
| Element | Can not be broken down(chemically) |
| Compound | Can be broken down Involves 2+ components, fixed |
| Physical Changes | change that only alters only the state/appearance but does not change the composition |
| Chemical Changes | Atoms rearrange, transforming the original substance into something new |
| Physical Property | Property/Substance shown without changing its composition |
| Chemical Property | Property/substance shown changing its composition via chemical change |
| Kinetic Energy | Energy in motion/use |
| Potential Energy | Energy potential/ when energy is not in use |
| Thermal Energy | The energy associated with the temperature of a object |
| Law of Conservation of Energy | Energy is neither created or destroyed |
| Energy | The capacity to do work |
| Work | Action of force through a difference(distance?) |
| Mass Number | Protons (p) +Neutrons (n) |
| Atomic Number | Number of Protons (p) |
| Protons | Positive charge |
| Neutrons | No charge |
| Electron | Negative charge |
| Group | Indicates the number of protons (Atomic#) |
| Period | Indicates the number of shells (Mass#) |
| Prefix Multiplier | International system of units, changes the value of a unit by powers of ten |
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