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Chemistry
The Periodic Table (Section 2)
| Question | Answer |
|---|---|
| What does an element's mass number tell us? | The number of protons and neutrons in an atom of the element |
| What does an element's atomic number tell us? | The number of protons in an atom of that element |
| What does the group number tell us? | How many atoms each element has in its outer shell |
| What does the period number tell us? | How many shells each element has |
| What are the metals in the middle of the periodic table called? | Transition metals |
| What do we call an atom with an incomplete outer shell? | Unstable |
| Metal oxides have a pH of ______ than 7, making them _________ | more, alkaline |
| Non-metal oxides have a pH of _______ than 7, making them ________ | less, acidic |
| What are Group 1 elements called? | Alkali metals |
| What are Group 7 elements called? | Halogens |
| What are Group 0 elements called? | Noble gases |
| Group 0 elements react with almost nothing, meaning they are what? | Inert |
| Why are noble gases unreactive? | They have a complete outer shell, meaning it takes a lot of energy to remove or add electrons |
Created by:
JoeMather
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