Term
| QUESTION
When calcium becomes an ion, it (gains / loses) electron(s), and will have what charge? |
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Definition
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Term
| QUESTION
Will sodium, in its elemental form, replace magnesium from a compound of magnesium chloride? If so, write a reaction equation, including the products formed. |
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Definition
Yes it will.
Na + MgCl2 --> NaCl + Mg |
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Term
| QUESTION
Which element, when found in the earth, would most likely be found in an uncombined (elemental) form – lead or silver? Explain why. |
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Definition
| Silver, because it is less reactive than lead (lower on the activity series). |
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Term
QUESTION
Write oxidation and reduction half-reactions for the following equation:
2 Li + MgCl2 → 2 LiCl + Mg |
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Definition
Oxidation: 2 Li0 --> 2 Li+1 + 2e-
Reduction: Mg+2 + 2e- --> Mg0 |
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Term
QUESTION
In the following half-reaction,
Cu+ + e - → Cu
is Cu+ being oxidized or reduced? Would it be an oxidizing or reducing agent? Explain. |
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Definition
| Cu+ is being reduced. It would therefore be a good oxidizing agent. |
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Term
| QUESTION
Elements near the top of the metal activity series (oxidize / reduce) elements below them. |
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Definition
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Term
| QUESTION
In the half-reaction
2 O -2 → O2 + 4 e -,
is oxide being oxidized or reduced? |
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Definition
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Term
QUESTION
When gold is in a compound, it can be replaced by iron–true or false. |
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Definition
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Term
| QUESTION
Write the reduction half-reaction for copper (II) ion. |
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Definition
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Term
| QUESTION
What are the seven diatomic elements?
Write their symbols. |
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Definition
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Term
QUESTION
Metals near the (top / bottom) of the activity series form the strongest, most stable compounds. |
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Definition
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Term
QUESTION
Metals near the bottom of the activity series are easily (oxidized / reduced). |
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Definition
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Term
QUESTION
An oxidizing agent aids in the oxidation of another element by (accepting electrons from / giving electrons to) that element. |
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Definition
| Accepting electrons from. |
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Term
QUESTION
Reduction is the (gain / loss) of electrons. |
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Definition
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Term
QUESTION
The charge on rubidium ion is |
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Definition
| +1 (it is an alkali metal) |
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Term
QUESTION
The layer of Earth that contains mineral resources is the |
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Definition
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Term
QUESTION
The charge on a selenium ion is |
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Definition
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Term
QUESTION
Which element is more easily extracted from its ore - copper or aluminum? |
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Definition
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Term
QUESTION
Without looking at your ion chart, what is the charge of magnesium ion? |
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Definition
+2 charge.
All alkaline earth metals form ions with +2 charge. |
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Term
| QUESTION
Why does aluminum form an ion with a +3 charge?
(The answer has to do with its electron configuration). |
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Definition
| Because it has 3 valence electrons, and will lose all 3 to attain the configuration of the noble gas Neon. |
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Term
| QUESTION
Write the products of this reaction. If the reaction does not occur, write NR.
Mg + AlCl3 --> _________________ |
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Definition
MgCl2 + Al
(Remember that Mg forms a +2 ion). |
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Term
| QUESTION
Write the products of this reaction. If the reaction does not occur, write NR.
Cu + NiCl2 --> ___________ |
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Definition
| NR. Ni is more reactive than copper, so nickel stays in its compound. |
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Term
QUESTION
1. What does the Roman numeral in the compound name iron(III) carbonate mean?
2. Write the formula of this compound. |
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Definition
The (III) indicates that the charge of iron is +3.
Fe2(CO3)3 |
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Term
[image]
QUESTION
What's my name, and how does my name help you remember the definitions of reduction and oxidation?
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Definition
| LEO is my name. "LEO says GER" helps you remember that loss of electrons is oxidation, and gain of electrons is reduction. |
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Term
Write a balanced chemical equation for this reaction. Include states of matter on each substance.
Elemental magnesium reacts with a solution of aluminum nitrate to produce a solution of magnesium nitrate and elemental zinc. |
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Definition
3 Mg (s) + 2 Al(NO3)3 (aq) --> 3 Mg(NO3)2 (aq) + 2 Al (s) |
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Term
Write a balanced chemical equation for this reaction.
Barium chloride reacts with silver nitrate to produce silver chloride and barium nitrate. |
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Definition
| BaCl2 + 2 AgNO3 --> Ba(NO3)2 + 2 AgCl |
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Term
Write a balanced equation for this reaction.
Include states of matter.
A solution of potassium bromide reacts with elemental fluorine gas to produce a solution of potassium fluoride and liquid elemental bromine. |
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Definition
2 KBr (aq) + F2 (g) --> 2 KF (aq) + Br2 (l) |
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