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Changes in Matter
Term | Definition |
---|---|
chemical change | some properties have changed, and you have a NEW type of matter |
physical change | some properties have changed, but you still have the SAME type of matter |
reaction | a change |
mixture | different kinds of substances physically combined together |
solution | a liquid mixture in which substances stay spread out evenly and human eyes cannot see different substances |
atomic theory | says that everything with mass is made up of tiny particles called atoms |
law of conservation of mass | says that matter cannot be created or destroyed, but it can be changed |
dissolve | a substance put in a liquid breaks into pieces so small that human eyes cannot see them |
state of matter / phase of matter | the physical property of being solid, liquid, gas, etc. |