| A | B |
|---|
| the mass of a _________ is about equal to the mass of a proton | neutron |
| two isotpoes of carbon are cabon-12 and corbon-14. These isotpes differ fom one another by two ________ | neutron |
| atoms from the same element with different numbers of neutrons are called______. | isotopes |
| elements that are gasses, ar brittle, and are poor conductors at room temperature are | nonmetals |
| a _______ is used to accelerate protons in the study of subatomic particles | tevatron |
| How are isotopes the same and how are they different | the element is the same, but a different atomic mass |
| How many groups and how many periods make up a periodic table? | 7 periods, 18 groups |
| skahjdfij | kldfk;j |
| edfjij | ;kj |
| iojefio | jj;f |
| iojei | o;jiohjio |
| hj;ohoi | ;oi |
| h | ih |
| i | hwhg |
