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Deca Science > Sci 3(3) > Flashcards

Sci 3(3) Flashcards

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1
Q

With what purpose are net ionic equations written?

A

eliminate spectator ions

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2
Q

Who is credited with the law of definite poroportions?

A

Proust

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3
Q

What French chemist rejected Proust’s law of definite proportions?

A

Claude Louis Berthollet

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4
Q

What did Proust use for his experiments?

A

Water and copper carbonate

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5
Q

Whose law could be considered essential for stoichiometry?

A

Proust’s Law

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6
Q

What part of Dalton’s atomic theory was wrong?

A

Atoms cannot be broken down further

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7
Q

How is the equilibrium constant calculated?

A

product of equilibrium concentration of products over product of equilibrium concentration of reactants

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8
Q

What happens if the value of the equilibrium constant is greater than 1?

A

The reaction will work backwards (product will become reactants)

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9
Q

What substances are dropped from the equilibrium expression?

A

pure solids and pure liquids

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10
Q

What is Ka?

A

equilibrium constant for acids

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11
Q

What is Kb?

A

equilibrium constant for bases

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12
Q

What is Ksp?

A

equilibrium constant for precipitates

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13
Q

What is Kp?

A

equilibrium constant involving pressures of gases

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14
Q

When is Kc used?

A

reaction involving solutions and concentrations

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15
Q

What is the activity (equilibrium contstant) of a pure solid or liquid?

A

1

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16
Q

What does a smaller number mean for Ka or Kb?

A

the acid or base is weaker

17
Q

Is silver chloride soluble or insoluble?

A

insoluble

18
Q

What is kinetics?

A

the study of how fast reactions occur and what affects the rate of the reaction

19
Q

What shows the effect of changing concentrations on the rate of reaction?

A

rate law

20
Q

What is the best model for chemical reactions?

A

collision model

21
Q

What does thermochemistry focus on?

A

heat transfe

22
Q

System+Surroundings=?

A

Universe

23
Q

What do endothermic reactions do?

A

absorb heat

24
Q

What do exothermic reactions do?

A

release heat

25
Q

Who is credited with the discovery of carbon dioxide?

A

Joseph Black

26
Q

When did Joseph Black begin to focus his research on heat?

A

1750s

Deca Science (8 decks)

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