Set 1 - Physical Flashcards Preview

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Flashcards in Set 1 - Physical Deck (9):
1

Feature of a neutral solution at any temperature?

[H+] = [OH-]

2

Half life graphs

Concentration-time

3

Why do successive ionisation energies increase with ionisation number?

Radius decreases
Attraction between electrons and nucleus increases

4

How do successive ionisation energies provide evidence for the electron shells in *element*

Large increase shows a new shell
Large difference between X and Y

5

How do the first ionisation energies provide details about electron structure?

X's outer electron in _ subshell
Y's outer electron in _ subshell
Therefore subshell _ has higher energy than _

6

Explain differences between enthalpy changes of hydration

Compare size
Compare charge
Compare attraction

7

Doubling mass of a reactant - effect on temperature and enthalpy change of hydration

Temperature change is doubled because twice the energy is produced in the same volume
Enthalpy change of solution remains the same because the ratio of the number of moles is the same

8

The Haber Process (conditions)

High temperature, increase rate
High pressure is expensive

9

Hydrogen gas

Does not occur naturally