- Complete the text. Use: boiled / body/ alchemist / German / gold /colour / burned / phosphorous
Hennig Brand was a -1-German -2-alchemist who lived in the 1600 (16 Hundreds). In the 17 Century alchemists wanted to extract -3-gold from the human -4-body . He was sure urine had gold because of its -5-colour. He -6-boiled his own urine and finally -7-burned the resulting paste at a high temperature. Smoke appeared and this paste burned violently . Brand had isolated -8-phosphorous from his urine. This was the first element that was isolated.
- Answer
- Which were the elements in the “Greek Periodic Table”? The elements in the "Greek Periodic Table" were: Air, Fire, Earth and Water
- Why was Antoine Lavoisier important character for Chemistry? He said that a substance can not be divided by any chemical way. Also he created a list of the elements that in that time he known and he divided the list in gases or metals
- How do we know him now? As the father of the Chemistry
- Complete these ideas with verbs in the Passive Voice. You may need present or past tenses. Explain why.
e.g. All elements were created in the Big Bang. (create)
- Elements ____were____ ___formed______ and ____released______ into space by exploding stars. (form/release)
- These elements ____were_____ ____studied______ by scientists during history. (study)
- The list of elements ___is______ ___finded______in the Periodic Table. (find)
- Elements like gold, silver and copper ___were______ ___discovered______ by ancient cultures. (discover)
- These elements ____were_____ ___used______ for jewelry and tools. (use)
- Gold, silver and copper ___could______ _____be_________ ___found_____ easily. (can/find)
- Are these sentences TRUE or FALSE?
- For Lavoisier an element cannot be separated by chemical means/methods. _T__
- He made a short list of 2 or 3 elements. _F__
- He divided elements into gases or metals._T__
- He created a complete periodic table. _F__
- Complete the table with the scientists’ names. Put them in chronological order (according to the video. Copy the correct sentences.
Scientist’s name
|
His contribution to science.
| |
Wolfgang Döbereiner = b- and h-
Dmitri Mendeleev = c- and f-
Hennig Brand = a-
Antoine Lavoisier = e-
Jhon Dalton = d- and g-
|
a-
|
isolated the first element.
|
b-
|
combined elements to see how they reacted to one another.
| |
c-
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finally organized the set of elements in the periodic table.
| |
d-
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organized elements according to their atomic weight.
| |
e-
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defined what an element was.
| |
f-
|
predicted elements that had not been discovered yet.
| |
g-
|
weighed elements.
| |
h-
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discovered shared properties and reactions.
|
- Make a list of the elements that appear on the video. Include at least 6 elements
ELEMENT
|
time
| ||
e.g.
|
gold
|
Au
|
1:36
|
1-
| Posphorous | F | 2:22 |
2-
| Calcium | Ca | 3:23 |
3-
| Magnesium | Mg | 3:23 |
4-
| Hydrogen | H | 3:23 |
5-
| Copper | Cu | 1:02 |
6-
| Silver | Ag | 1:02 |
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