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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