Chemistry - MT2 - Part 3 Flashcards

1
Q

Who discovered photosynthesis?

A

Jan Ingen-Housz

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2
Q

What are the green parts of plants responsible for?

A

Restoring injured air by removing phlogiston from the air, but they do this only in the sunlight
- plants cant restore injured air in the dark

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3
Q

Who created the oxidation theory?

A

Antoine Lavoisier

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4
Q

What did Lavoisier abandon?

A

The phlogiston concept and renamed dephlogisticated air, oxygen

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5
Q

What concept did Lavoisier think was strange?

A

Negative weight

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6
Q

What did Lavoisier conclude about respiration and combustion?

A

That that both consume O2 and release CO2

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7
Q

How did Lavoisier get evidence about respiration and combustion?

A

With his ice calorimeter
- he could quantify the heat released by a process, he concluded that the heat released is the same with both respiration and combustion

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8
Q

What did he believe respiration and combustion other used? (2)

A
  1. CO2

2. Fixed air

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9
Q

Ice calorimeter

A

Measured heat produced from a mouse

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10
Q

What did Louis Joseph Proust establish?

A

That elements combine in compound substances in simple, constant rations by weight
- known as the Law of Definite Proportions

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11
Q

What did John Dalton realize?

A

That Proust’s results could be explained if each compound of elements made of atoms
- each atom has a fixed weight and a given compound consists of specific numbers of each kind of atom

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12
Q

What study was Dalton involved with?

A

Colour blindness

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13
Q

What did Friedrich Wohler produce?

A

Urea

- first molecule produced outside an organism

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14
Q

What did Hermann Kolbe produce?

A

Acidic acid from his lab

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15
Q

What did Robert Boyle create?

A

The atomic theory

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16
Q

What is the atomic theory?

A

If the volume of a gas is decreasing, the pressure increases proportionally