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Chemistry
Atomic Structure - Chapter 1
| Question | Answer |
|---|---|
| Atoms are made up of several ____ | components |
| Components are called the ____ | elementary particles |
| The 3 major elementary particles are _____ | protons, neutrons, electrons |
| The protons and neutrons are packed together in an inner core called the _____ | nucleus |
| The outer part of the atom, which contains electrons, is called the ____ | electron cloud |
| Like electrical charges ____ each other | repel |
| Unlike electrical charges ____ each other | attract |
| The nucleus attracts negatively charged electrons. Therefore, the overall charge of the nucleus must be | positive |
| An atom consists of an inner part, or ____, that is made up of ____ and _____ | Nucleus, protons, neutrons |
| The electrons have what type of charge? | negative |
| The proton has what type of charge? | positive |
| The neutron has a charge of _____ | zero |
| The charge on the electron balances the charge on the proton. If the electron has a charge of -1, then the proton would have a charge of _____ | +1 |
| An atom with one proton in its nucleus and one electron outside that nucleus would therefore have an overall charge of | 0 |
| Atoms are electrically neutral. Therefore, an atom will contain an ____ number of ____ and ____ | equal, protons, electrons |
| An atom with 12 protons in the nucleus would have how many electrons outside the necleus? | 12 |
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