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School > Chemistry Test - Reactions > Flashcards

Chemistry Test - Reactions Flashcards

1
Q

Synthesis Reactions:

A

A reaction in which two reactants combine to make a larger or more complex product.

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2
Q

General Pattern for Synthesis

A

A + B -> AB

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3
Q

What is this an example of: (Synthesis or Decomposition)
Mg(s) + Cl2(g) -> MgCl2(s)

A

Synthesis

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4
Q

Decomposition Reactions:

A

A reaction in which a large or more complex compound breaks down to form two (or more) simpler products.

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5
Q

General Pattern for Decomposition:

A

AB -> A + B

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6
Q

What is this example of: (Synthesis or Decomposition)
2C7H5(NO2)3(s) -> 7C(s) + 7CO(g) + 3N2(g) + 5H20(g) + energy

A

Decomposition

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7
Q

Bromothymol Blue is an indicator that something is ? or ?

A

acidic
basic

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8
Q

if something is blue or stays blue…

A

it is basic

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9
Q

if something is turned green or turning yellow…

A

it is acidic

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10
Q

when we breathe CO2 (carbon dioxide) into H2O (water) with Bromothymol Blue in it, it turns

A

green

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11
Q

when we add Baking Soda (NaHCO₃) back into that, it turns…

A

blue again

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12
Q

when a compound with only non-metals such as CO2 is added to a solution, it makes it…

A

acidic

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13
Q

when a compound with a metal + non-metal such as NaHCO₃ is added to a solution, it makes it…

A

basic

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14
Q

Carbon Dioxide (CO2) is an issue during global warming because…

A

when CO2 is added to ocean water it makes it acidic and causes things like shells to dissolve

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15
Q

Phenolphthalein is an Indicator that something is ? or ?

A

acidic
basic

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16
Q

Single Displacement Reaction:

A

A reaction in which an element displaces another element in a compound, producing a new compound and a new element.

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17
Q

General Pattern for Single Displacement

A

A + BC -> AC + B

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18
Q

What is this an example of: Zn(s) + Cu(SO4)(aq) -> ZnSO4(aq) + Cu(s)

A

Single Displacement

19
Q

Double Displacement:

A

A reaction in which elements in two compounds displace each other or trade places, producing two new compounds.

20
Q

General Pattern for Double Displacement:

A

AB + CD -> AD + CB

21
Q

What is this an example of: CuSO4(aq) + 2NaOH(aq) -> Cu(OH)2(s) + Na2SO4(aq)

A

Double Displacement

22
Q

For single displacement reactions to occur:

A

These reactions require a solid metal and a metal solution.
In order for a reaction to occur, the solid metal must be above, or higher than the metal in solution on the Activity Series of Metals

23
Q

Single displacement stealing theory:

A
  • A can steal B’s girlfriend C if A is higher than B on the Activity Series
  • If A is not higher than B on the activity series A cannot steal B’s girlfriend C and no reaction occurs
24
Q

For a single displacement reaction to occur the solid metal must be ? the solution
metal/element in the ? series of ?.

A

Above
Activity
Metals

25
Q

For double displacement reactions to occur:

A
  • One of the reactions must be a solid
  • If it’s a solid it produces a precipitate
26
Q

How to do double displacement:

A
  1. Swap the B and the D in AB + CD
  2. Balance those charges
  3. Balance the equation
  4. Use the solubility chart to see if AD is an S or an Aq
  5. Use the solubility chart to see if CB is an S or an Aq
  6. If at least one of the two is an S it’s double displacement, if both are aqueous, no reaction
27
Q

Combustion is:

A

Heat
Oxygen
And a Hydrocarbon aka a fuel
Hydrocarbon is a CH

28
Q

Complete Combustion
(reactant and products)

A

CH and O2 as a reactant, CO2 and H2O have to be the products

29
Q

Incomplete Combustion
(reactant and products)

A

Incomplete not enough oxygen so..
O2 as a reactant
CO or C as products

30
Q

Combustion can be:

A
  1. Complete: If there’s enough oxygen gas, it produces Carbon Dioxide and Water.
  2. Incomplete: If there is not enough oxygen reaction…
    a) The output will be CO and Water
    b) Just C and Water
31
Q

If combustion is complete with CO2 you will see a ? flame

A

Blue

32
Q

If combustion is incomplete with CO you will see a ? flame

A

Yellow/Orange

33
Q

If combustion is incomplete with only C you will see…

A

pure black soot

34
Q

The formula for complete combustion:

A

Fuel + Oxygen -> Carbon dioxide + water
1 Fuel + ?/2 O2 -> ? CO2 + ?H2O

35
Q

In combustion reactions: The number of carbon atoms is equal to…

A

the difference between the oxygen atoms when comparing incomplete versus complete combustion.

36
Q

Complete combustion:

A

The combustion (burning) of a hydrocarbon in a PLENTIFUL supply of oxygen to produce carbon dioxide, water, and energy.

37
Q

Incomplete combustion:

A

The combustion (burning) of a hydrocarbon in a LIMITED supply of oxygen; products may include carbon dioxide, carbon monoxide, soot, water, and energy.

38
Q

Technically combustion is … because…

A

double synthesis because 2 new products are made.

39
Q

Three factors for combustion and factors of each

A
  1. Fuel - to act as an energy source
  2. Oxygen - to maintain the burn and give it a medium
  3. Heat - to ignite the fuel.
40
Q

An aqueous solution is…

A

a completely dissolved substance in water

41
Q

Thus, if there is precipitate it’s due to a ?, not ? solution because if it was aqueous it would have ?

A

Solid
Aqueous
Dissolved

42
Q

So when you do synthesis, or single displacement, or double displacement you gotta

A
  1. Add, swap one (depending on the reactivity chart), or swap both
  2. Balance them charges
  3. Balance that equation queen
  4. Use the solubility chart thing to see if it’ll be aq or s
43
Q

How to use solubility chart:

A

For very soluble (aq) - it’ll be AQ as long as the ions don’t match the exceptions, if it does then it’s (s)
For the slightly soluble (s) - it’ll be S as long as the ions don’t match the exceptions, if it does then it’s (aq)
IF NONE ARE ON THE CHART THEN ASSUME ITS (s)

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