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FCAT Review Unit 4
Question | Answer |
---|---|
matter | Anything that has mass and takes up space. |
temperature | The measure of the energy of motion in the particles of matter, which we feel as how hot or cold something is. |
volume | The amount of space something takes up. |
gas | The state of matter in which a substance does not have a definite shape or volume. |
liquid | The state of matter in which a substance has a definite volume but no definite shape. |
solid | The state of matter in which a substance has a definite shape and a definite volume. |
physical change | A change in which the form or shape of a substance changes but the substance still has the same chemical makeup. |
chemical change | A change in one or more substances, caused by a reaction, that forms new and different substances. |
reaction | The process in which new substances are formed during a chemical change. |
mixture | A combination of two or more different substances in which the substances keep their identities. |
solution | A mixture that has the same composition throughout because all the parts are mixed evenly. |
atom | The smallest unit into which an element can be divided and still retain all the properites of that element. |
atomic theory | A scientific explanation of the structure of atoms and how they interact with other atoms. |
element | Matter that is made up of only one kind of atom. |
compound | A substance made of two or more different atoms that have combined chemically. |