Term
| What is one of the oldest applied sciences? |
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Definition
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Term
| How many known metals are there? |
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Definition
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Term
| What are the seven metals of antiquity? |
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Definition
Gold(6000BC), Copper(4200BC),
Silver(4000BC), Lead(3500BC),
Tin(1750BC), Iron(1500BC),
Mercury(750BC) |
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Term
| What are the ages of metal? |
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Definition
Copper age(3200-2300BC)
Bronze age(2300-700BC)
Iron age(700BC-1AD)
Modern age(1AD-present) |
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Term
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Definition
| When an atom loses an electron, forming a cation |
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Term
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Definition
| When an atom gains an electron, forming a negative anion |
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Term
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Definition
| reduction and oxidation, just shortend |
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Term
| What is an oxidising agent? |
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Definition
| A chemical species which causes another species to undergo oxidation |
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Term
| What is the oxidation state of hydrogen? |
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Definition
+1 except in metal hydrides then it is
-1 |
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Term
| What is the oxidation state of oxygen? |
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Definition
| +2 except in peroxides where it is -1 |
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Term
| What hapens when the electrons are on the right hand side of a half equation? |
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Definition
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Term
| What hapens when the electrons are on the left hand side of a half equation? |
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Definition
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Term
| Generally, where are the most reactive metals found? |
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Definition
| On the left hand side of the periodic table |
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Term
| Where are the least reactive metals found? |
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Definition
| The middle of the periodic table |
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Term
| What is located in the first column of the periodic table? |
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Definition
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Term
| What is the first ionization energy? |
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Definition
| The energy required to remove the first electron from an atom |
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Term
| Who published the first periodic table? |
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Definition
| Dimitri Mendeleev, a table of known 63 elements, in order of increasing atomic mass and those with similar properties beneath each other, left gaps where elements were unknown, made predictions of unknown elements from these gaps and surrounding elemenrs, elements that did not fit were classified using their properties. |
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Term
| What are the horizontal rows of a periodic table called? |
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Definition
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Term
| What are the vertical columns in a periodic table called? |
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Definition
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Term
| What is Avogadro's number? |
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Definition
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Term
| How do you find the number of moles? |
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Definition
| Number of particles divided by Avogadro's number |
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Term
| How do you convert mass to moles? |
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Definition
n= m divide by M
m= mass of the substance
M= the mass of one mole of the substance
Eg how many moles in 0.35g of Mg
n= 0.35/24.31
=0.0144 moles |
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Term
| Under S.T.P conditions, what volume in litres does one mole of any gas occupy? |
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Definition
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