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Chem > Chemical Reactions > Flashcards

Chemical Reactions Flashcards

1
Q

Signs of chemical reaction

A

Evolution of heat and light
Formation of gas
Precipitate
Color change

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2
Q

Chemical reaction equation

A

A+B->C+D

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3
Q

Symbol means

->

A

Produces/ forms

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4
Q

Symbol means

+

A

Plus/and

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5
Q

Triangle ->

A

Reactants are heated

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6
Q

Squiggle ->

A

Electricity added

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7
Q

Individual atom is called

A

Atom

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8
Q

Covalent substance is called

A

Molecule

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9
Q

Ionic substance is called

A

Unit

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10
Q

Law of conservation of mass

A

Mass is neither created nor destroyed

Total mass stays the same

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11
Q

Balancing equations

A

Equal on both sides

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12
Q

Combustion

A

The burning of any substance in O2 to produce heat (exo)

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13
Q

Combustion equation

A

A+O2->B

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14
Q

Synthesis

A

The combination of two or more substances to form a compound
Omg one product

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15
Q

Synthesis equation

A

A+B->AB

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16
Q

Decomposition

A

A compound breaks down into 2 or more less complex substances
Usually by heat or electricity

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17
Q

Decomposition equation

A

AB->A+B

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18
Q

Single replacement

A

Reactants are an element or compound
One element replaces another in a compound
Metal replaces metal
Nonmetal replaces nonmetal

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19
Q

Single replacement equation

A

A+BC->B+AC

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20
Q

Double replacement

A

Ions in two compounds change partners

Cation of one compound switches with the cation of the other

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21
Q

Double replacement equation

A

AB+CD->AD+CB

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22
Q

If there is one product what is it

A

Synthesis

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23
Q

If there is more than one products and only one reactant it is

A

Decomposition

24
Q

> 1 reactants
1 products
Reactants element and compound

A

Single

25
Q

> 1 reactants
1 products
Reactants compound and compound

A

Double

26
Q

> 1 reactants
1 products
Reactants O2 and C?H?

A

Combustion

27
Q

Reactants in aqueous solutions

A

Double replacement reactions only work

28
Q

Aqueous indicates

A

Compound is dissolved

29
Q

Dissolved ionic compounds are separated

A

Into their ions

30
Q

Steps to write complete ionic equation

A

Use solubility table for which will dissolve
Write state
Desperate all aq into ions, include subscripts as coefficients and charges

31
Q

Steps to write net ionic

A

Start with complete ionic equation
Cross out spectator ions
Rewrite without spectator

32
Q

Spectator ions

A

The ions that are the exact same on both sides

33
Q

If all are spectators this means

A

No net reaction

change sign to _>

34
Q

What are always aqueous

A

Sodium and nitrate

35
Q

Combustion products

A

Contain oxygen

Hydro carbons form CO2 + H2O

36
Q

Reactants:
Synthesis
element + element

A

One product
Just based on charges
Remember diatomic
Ex H2+Cl2-> HCl

37
Q

Reactants:
Synthesis
Nonmetal_oxide +H2O->

A

Products
Acid
Remember polyatomic ions and naming acids

38
Q

Reactants:
Synthesis
Metal_oxide + H2O->

A

Metal_hydroxide (OH)

39
Q

Reactants: acid

Decompose

A

Acid->

nonmetal_oxide + H2O

40
Q

Reactants: decompose

Metal_hydroxide->

A

Metal_oxide + H2O

41
Q

Reactants: decompose

Metal_carbonate->

A

Metal_oxide +CO2

42
Q

Reactants: decompose

Metal_chlorate->

A

Metal_chloride + O2

43
Q

Decompose with heat

Heavy metal_oxide->

A

Metal + O2

44
Q

Decompose with electricity

Product->

A

Element + element
Example water->
H2+O2

45
Q

When predicting products what is one thing that is necessary to remember after predicting

A

TO BALENCE

46
Q

Single replacement. What needs to be true for it to occur

A

Metal will replace metal ONLY IF the one in the compound is less reactive or LESS CUTE

47
Q

Single replacement

Metal (NA or CA) + water->

A

-> metal_hydroxide + H2

48
Q 
Single replacement 
Active Metals (Zn Fe Al) + acid ->
A

-> salt (ionic compound) + H2

49
Q

Active series non metals

A 
F
Cl
Br
I
Halogens row
50
Q

What do halogens and the cutesy chart have in common (SR)

A

Halogens will replace less reactive halogens

51
Q

Transition metals only change charge in

A

Single replacement

52
Q

What needs to be true of reactants for double replacement

A

Both reactants have to be aqueous

53
Q

In double replacement, which switch

A

Cations

54
Q

If everything is aqueous in a double reaction then what

A

No reaction

55
Q

Neautrilization

A

A reaction between an acid and a base which yields a salt and water
Double replacement

Chem (14 decks)

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