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changes of mattergr7
change of matter
Question | Answer |
---|---|
crystal | solid shape of some minerals made by the atomic pattern |
matter | anything that has mass and occupies space |
liquid | matter with a definite volume but no definite shape |
proton | positively charged particle in the nucleus |
gas | matter with no definite volume or shape |
neutron | neutrally charged particle in the nucleus |
atom | smallest particle of an element |
atomic mass | average mass of one atom of an element |
mixture | combination of 2 or more substances that can be separted |
physical | change that does not involve the formation of something new |
chemical formula | symbols and numbers that describe the number of atoms in one molecule of a compound |
element | substance that are the building blocks of matter |
iron | an electrically changed atom due to agin or loss of electrons |
volume | amount of space an object occupies |
molecule | smallest part of a compound |
necleus | center of an atom,made of protons and neutrons |
atomic number | number of protons in the nucleus of one atom of an element |
electron | negatively charged particle orbiting the nucleus |
electron levels | regions around an atom where electrons are orbiting |
isotopes | atoms of the same element with different numbers of neutrons |