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Science Burkett Matr
Study cards for Mrs. Burkett's 7th grade academic classes Matter Unit
| Question | Answer |
|---|---|
| Anything with mass and takes up space | Matter |
| Words or phrases used to describe an object | Properties |
| Two substances mixed together but not chemically combined | Mixtures |
| A mixture that appears to be the same throught, well mixed | Homogeneous mixture |
| A mixture that does not appear to be the same throughout, least mixed | Hetergeneous mixture |
| A type of Hetergeneous mixture when one substance is disssolved in another | Solution |
| The substance that does the dissolving in a solution | Solvent |
| The substance that is dissolved in a solution | Solute |
| A change when the substance stays the same | Physical change |
| A chance in which a new substance is formed | Chemical change |
| When two or more substances are chemically combined | Compounds |
| The smallest part of a compound with all the properties of that compound | Molecule |
| A number to the lower right of an a element symbol in a chemical formula, Tells how many atoms are in are present in a compound | Subscript |
| In front a of a chemical formula, tella how many molecules are in the formula | Coefficient |
| The simplest pure substance | Element |
| The smallest part of a element with all the properties that that element has | Atom |
| The center of an atom | Nucleus |
| Neutral charge and are found in the nucleus of an atom | Neutrons |
| Have a + charge and are found in the nucleus of an atom | Proton |
| Have a - charge and are found outside of the nucleus | Electron |
| Electrons are found here | Energy levels outside the nucleus |
| Equal to the # of protons in the atom | Atomic # |
| Sum of the protons and neutrons | Mass # |
| Phase of matter with no definite shape but has a definite volume | Liquid |
| Phase of matter with no definite shape or a definite volume | Gas |
| Phase of matter with both a definite shape and a definite volume | Solid |
| Must be added to or taken away from a substance in order for a phase change to occur | Energy |
| A solid changing to a liquid | Melting |
| A liquid changing to a solid | Freezing |
| A liquid changing to a gas only at the surface of the liquid | Evaporation |
| Gas changing to a liquid | Condensation |