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Science
5.7 Matter
Term | Definition |
---|---|
Atoms | are the smallest part of an element. |
Elements | are matter composed of all the same type of atom. There are more than 100 that make up all matter. They are grouped as the Periodic Table of Matter. |
Compounds | are the result of two or more elements combined chemically. they are composed of molecules. |
Matter | is made up of small particles called atoms. The basic structural components of an atom are electrons, protons, and neutrons. |
electrons | negative charged particles |
neutrons | neutral charged particles |
protons | positive charged particles |
Molecules | are the smallest part of a compound. |
Mixture | are combinations of two or more substances that do not lose their identifying characteristics when combined. |
Solution | is a type of mixture in which a solid material, such as salt, is dissolved in a liquid, such as water. |
Properties | are characteristics that describe an object. |
Temperature | is the degree of hotness or coldness measured on a definite scale. |
Mass | is the metric measure of the amount of matter in an object. |
solid | is the state of matter that has a definite shape and a definite volume. This kind of molecules are densely packed. |
liquid | is the state of matter that has a indefinite shape and a definite volume. This kind of molecules flow easily. |
gas | is the state of matter that has a indefinite shape and a indefinite volume. This kind of molecules bounces around. |
melting | when thermal energy is increased the phase of matter moves from a solid to liquid |
evaporating | when thermal energy is increased the phase of matter moves from a liquid to gas |
condensing | when thermal energy is decreased the phase of matter moves from a gas to the liquid |
freezing | when thermal energy is decreased the phase of matter moves from a liquid to the solid |