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| Term | Definition |
|---|---|
| Matter | Anything that has mass and takes up volume |
| Volume | The amount of space an object takes up |
| Qualitative Data | Describing something without using numbers |
| Quantitative Data | Describing something using measurement and numbers |
| Scientific Method | A Method of study used by scientists |
| Variables | A condition of a characteristic or matte that is measured or controlled in an experiment |
| Theory | A widely accepted hypothesis that has been tested many times |
| Mass | How much matter an object contains |
| Scientific Notation | A shortcut method for writing very large and very small numbers |
| Superscript | A number that is written just above the writing line |
| Accuracy | How close a measurement is to the correct or accepted value |
| Precision | How close a measurement is to other measurements of the same thing |
| Physical Property | A characteristic of a substance that can be observed without changing the substance |
| State | The physical form of a substance; solid |
| Solid | A State of mater that has a definite shape or volume |
| Liquid | A state of matter that has a definite volume |
| Gas | A characteristic that describes how a substance changes into one or more different substances |
| Chemical Property | A characteristic that describes how a substance changes into one or more different substances |
| Physical Change | A change in a substance that affects its physical property |
| Chemical Change | A change in a substance that results in one or more different substances being formed |
| Substance | A kind of mater with a definite makeup and definite chemical and physical properties; and element or a compound |
| Mixture | Two or more substances mixed together; the properties of each substance are not affected by mixing |
| Heterogeneous Mixture | A mixture in which one or more substances are are unevenly mixed throughout |
| Homogeneous Mixture | A mixture in which all of the individual substances are evenly mixed throughout; a solution |
| Solvent | The substance that a solute is dissolved in; usually the substance in a solution that is present in the greatest amount |
| Aqueous Solution | A solution in which the solvent water |
| Alloy | A solid solution containing metals |
| Proton | A particle with a positive charge in the nucleus of an atom |
| Neutron | A particle with no charge in the nucleus of an atom |
| Electron | A particle with a negative charge in the atom |
| Charge | A certain amount of electricity |
| Nucleus | The center of an atom; consists of neutrons and protons |
| Periodic Table | A table that shows the names and symbols of elements and is organized be atomic number and electron arragnement |
| Metal | An element found on the left side of the periodic table; often a shiny solid that can conduct heat and electricity |
| Nonmetal | An element found on the right side of the periodic table; often a gas or dull solid that does not conduct heat or electricity |
| Semimetal | An element that has properties of both a metal and a nonmetal; located between metals and nonmetals on the periodic table |
| Subscript | A number written just below the writing line; in a chemical formulas |
| Compound | A substance that consists of two or more kinds of atoms that are bonded |
| Chemical Formula | A group of symbols that shows the number and kinds of atoms in a compound |
| Freezing or solidification | Liquid to solid |
| Sublimation | Solid to liquid and gass to solid |
| Filtration | Separating mixtures so that the larger parts (usually solids) are caught by the filter |
| Distillation | Separating mixtures by slowly heating two combined liquids so that the one with the lower boiling point boils off first and the other liquid is left behind |
| Substance | A kind of matter with definite makeup or composition |
| Chemical Bond | A bond formed when two atoms share or transfer electrons |
| Element | A substance that is made of only one kind of atom |
| Atomic Number | Equal to the number of PROTONS in an atom |
| Atom | The tiny particles that make up matter |
| Chemical Symbol | A one or two letter symbol that represents an element |
| Monoatomic Atoms | Exist as single atoms in nature; each atom comes separate from one another; examples; Helium & Noble Gases |
| Diatomic Atoms | Exist as pairs of bonded atoms in nature |
| Polyatomic Atoms | Exist as groups of three or more bonded atoms in nature |
Created by:
joroad
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