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Act. #14-17
| Term | Definition |
|---|---|
| atom | the smallest particle of matter |
| chemical bond | energy connection that holds atoms together to form molecules |
| chemical formula | a shorthand way to identify the types and number of atoms in a molecule |
| chemical property | describes how a substance reacts with another substance |
| compound | two or more different elements chemically bonded together |
| electron | the negatively charged particle found outside the nucleus of an atom |
| element | a substance made of only one kind of atom |
| family | a column of elements on the periodic table that have similar properties |
| neutron | a particle with no charge found in the nucleus of an atom |
| molecule | two or more atoms chemically bonded together |
| physical property | characteristics that are observed or measured without changing the substance |
| proton | the positively charged particle in the nucleus of an atom |
| material | a type of solid matter used to make things |
| periodic table of elements | a way of organizing the elements based on their properties |
| atomic number | the number of protons in an atom |
| atomic mass | the number of protons + the number of neutrons in an atom |