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Atoms
Recap of Grade 9 Topic: Atoms and the Periodic Table
| Question | Answer |
|---|---|
| What is an ATOM? | The smallest part of matter that can table part in a chemical reaction |
| How does an atom relate to elements? | Elements are made up atoms of only one type. |
| What are sub-atomic particles | These are tiny particles that make up an atom: protons, neutrons and electrons |
| Differentiate among these particles | Protons: positively charged, found in nucleus, mass of 1 amu Neutrons: neutral, found in the nucleus, mass of 1 amu Electrons: negatively charged, found on electron shell/ energy level, mass 1/1840 or 1/1836 amu |