click below
click below
Normal Size Small Size show me how
boring class
chemistry
Question | Answer |
---|---|
what is an atom | an atom is the smallest unit of matter |
what is an scientific model? | an idea that allows us to create explanations of how we think. some parts of the world works. |
what is scientific evidence? | collections of observations that many people have made. everyone agrees on the same collection of observations. |
what is atomic number? | number of protons in the nucleus of an atom. |
what is mass number? | number of protons + the number of neutrons |
what is atomic mass? | "weight" or mass of a single atom. (same as mass#, cause most of the weight of an atom is found in the nucleus. |
what is atomic weight? | the decimal number on the periodic table. |