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IPC - UNIT 2 Matter
Covers Unit 2 concepts over matter and its properties
Question | Answer |
---|---|
___A______ and _____B______ are considered pure substances. | Elements and compounds |
Element | A specific type of atom (with a given # of protons, neutrons. and electrons) |
Compound | Two or more atoms CHEMICALLY bonded |
Mixture | 2 or more substances that can be separated physically. |
Atom | Smallest particle of an element |
Matter | Anything that takes up mass |
3 states of matter | Solid - Liquid - Gas |
2 parts of an atom found IN the nucleus | Protons and Neutrons |
1 part of an atom found OUTSIDE its nucleus | Electrons |
Part of an atom with a positive charge. | proton |
Part of an atom with a negative charge | electron |
Part of an atom with a neutral charge | neutron |
A change that impacts the appearance of a substance, but not its identity or properties | Physical |
A change that creates something else | Chemical |
Evidences of chemical change | Bubbles, Cloudiness, Temp Change, Color Change, Smell/Taste Change |
Type of chemical reaction that releases heat energy and feels hot. | Exothermic |
Type of chemical reaction that absorbs heat energy and feels cold. | Endothermic |