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Description
Flashcards by Jannat Abbas, updated more than 1 year ago
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Created by Jannat Abbas
almost 5 years ago
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| Question | Answer |
| Chapter 6.1 -Elements- | By Jannat Abbas 8a |
| 1. What are elements? | Substances made up of 1 type of atom |
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2. What are atoms?
Image:
Atom+2 (binary/octet-stream)
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The smallest building blocks of the universe |
| 3. How do scientists see these atoms? |
Using an STM:
Scanning
Tunneling
Microscope
Image:
Stm (binary/octet-stream)
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| 4. What do properties mean? | Characteristics or features |
| 5. What are elements normally classified by? |
Metallic and non-metallic elements
Image:
M+Nm (binary/octet-stream)
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| 6. Give 5 Examples of metallic elements: |
-Gold
-Iron
-Copper
-Tin
-Mercury
Image:
Metals (binary/octet-stream)
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| 7. Give 5 properties of metals: | Metals are: -Malleable -Ductile - Good conductors of heat + electricity -Solid at room temperature -Lustrous |
| 8. What does "malleable" mean? | When a metal can be bent and hammered into sheets |
| 9. What does "ductile" mean? | When a metal can be stretched into wires |
| 10. What is special about mercury? | It's the only metallic element that is liquid at room temperature |
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11. What is one property of iron?
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Iron1 (binary/octet-stream)
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It can be shaped into a spring |
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12. What is one property of gold?
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Gold (binary/octet-stream)
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It is mostly used for jewelry |
| 13. What is one property of copper? | It has a typical metallic shine |
| 14. What is special about non-metallic elements? |
They are the exact opposite of metallic elements
Image:
Rocks (binary/octet-stream)
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15. Name 3 properties of non-metallic elements:
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M+Nm (binary/octet-stream)
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They:
-Tend to be dull
-Don't conduct heat nor electricity
-Are brittle and break up easily
Image:
Iodine (binary/octet-stream)
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| 16. What is special about "bromine"? | It's the only non-metal which is liquid at room temperature |
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17. What is special about "iodine"?
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Iodine (binary/octet-stream)
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It forms crystals at room temperature, but turns to a purple gas when heated |
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18. All in all, how many elements are there in total?
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Ptoe (binary/octet-stream)
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118
Image:
Ptoe2 (binary/octet-stream)
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| 19. How many elements occur naturally and how many are man-made? | Natural: 98 Man-made: 20 |
| 20. List two things every element has. | 1. Atoms (1 or more) 2. A unique set of features |
| 21. How are elements listed on the periodic table? | From lightest to heaviest |
| Bonus: How are the chemical symbols for each element written down? | Two letters. 1st letter is capital, 2nd letter is lowercase |
| And good job for getting through this whole stack :) |
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