Chapter 18: Rates of Reaction and Affecting Factors

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16 Terms

1

Cotton wool

________ is used in the neck of the flask as it allows the gas to escape.

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2

photochemical reactions

The rate of some ________, which occur in presence of light, increases with increase in the intensity of suitable light used.

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3

data logger

The ________ does not make the mass balance any more accurate.

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4

orientation factor

The ________ also affect the interaction between reactants and catalysts.

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5

correct orientation

The reaction between the reactants occurs only when they collide in ________ in space.

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6

solid state

Usually solvents help in breaking the cohesive forces between ions or molecules in the ________.

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7

volume of a gas

The ________ is measured using a gas syringe, or an upside down burette or measuring cylinder.

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8

measuring the amount of light that passes through a reaction mixture (as a precipitate forms) over time

this can be done by inspection or using a light sensor and data logger

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9

catalyst

A catalyst is a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction.

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10

concentration

In science, the amount of a substance, such as a salt, that is in a certain amount of tissue or liquid, such as blood.

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11

reacting particles

Reacting particles can form products when they collide with one another provided those collisions have enough kinetic energy and the correct orientation.

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12

particles

a minute portion of matter.

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13

product

an article or substance that is manufactured or refined for sale

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14

bonds

A covalent bond is a chemical bond that involves the sharing of electrons to form electron pairs between atoms.

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15

collide

hit by accident when moving.

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16

stereochemistry

the study of the three‐dimensional structure of molecules

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