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CHEM 130 > Quiz 2/Exam 2 > Flashcards

Quiz 2/Exam 2 Flashcards

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1
Q

Decomposition reaction

A

CD - - - - > C + D

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2
Q

Combination reaction

A

A + B - - - - > AB

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3
Q

Single-displacement reaction

A

A + CD - - - - > C + AD

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4
Q

Double-displacement reaction

A

CD + EF - - - - > CF + ED

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5
Q

Halogen displacement

A

One halogen can displace a halide

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6
Q

Halogen

A

Diatomic

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7
Q

Halide

A

Monoatomic

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8
Q

Halogen activity series

A

F2 > Cl2 > Br2 > I2

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9
Q

Three types of double-displacement reactions

A

Precipitation, acid-base, gas formation

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10
Q

Precipitation reaction

A

Formation of an insoluble solid called a precipitate

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11
Q

Combustion reactions

A

Any reaction involving oxygen as a reactant

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12
Q

Molecular equation (ME)

A

In which substances are represented as they exist as molecules

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13
Q

Ionic equations

A

Represents substances in their realistic forms in solution

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14
Q

Strong electrolytes

A

Separate into ions

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15
Q

Always

A

Ask if reaction happens or not

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16
Q

Hydrocarbon combustion

A

Product is always gonna be CO + H2O

17
Q

Net ionic equation

A

Eliminate spectator ions, only if same charge, same number, and reaction is balanced. If everything can cancel out, no reaction happened

18
Q

Metals can

A

React with nonmetals to form an ionic compound

19
Q

Solids are

A

Insoluble

20
Q

Percent composition

A

Weight of element/weight of compound times 100%

21
Q

Empirical formula from percent

A

Turn percent into grams, convert the mass into moles (atomic weight/Mol), divide by lowest number and use in ratio

22
Q

Molecular formula from empirical formula

A

Weight of empirical formula/weight of sample, multiply with result

23
Q

Moles to grams

A

? mols of element x (? molar mass of element/1 mol of element)

24
Q

Grams to moles

A

? Grams of element x 1 mol of element/? Molar mass of element

25
Q

Atoms present in molecule

A

1 mol of compound x Avogadro’s number molecules of compound/1 mol of compound x number of atoms for one element in a compound/1 molecule of compound

26
Q

Molarity

A

Convert to moles, number of moles of solute/number of liters in solution = M

27
Q

Molarity and dilutions

A

Molarity 1 x Volume 1 = Molarity 2 x Volume 2

28
Q

Unstable products that dissolve into gases and water

A

H2CO3 and H2SO3

29
Q

Strong acids

A

HCl, HBr, HI, HNO3, H2SO4, HClO4

30
Q

What never splits

A

Solid, liquid, gas

CHEM 130 (16 decks)

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