Terms Recap

Question 1

Electrostatic attraction is attraction between _ and _

Answer 1

Positive nucleus of atom

Negative electrons of an atom

Question 2

Greater positive charge of the nucleus means

Answer 2

More protons in nucleus

Question 3

The greater the _ the greater the effective nuclear charge

Answer 3

Positive charge of the nucleus (more protons in nucleus)

Question 4

Energy of an atom is defined when the atom loses or gains energy through chemical reactions which cause the

Answer 4

Loss or gain of electrons

Question 5

Energy from exothermic reaction is (release energy)

Answer 5

Negative

Question 6

Energy from endothermos reaction is (absorbs heat)

Answer 6

Positive

Question 7

When an electron is added to a neutral atom

Answer 7

Energy is released

Question 8

More energy is required to add an electron to a _ atom

Answer 8

Negative

Question 9

Adding an electron to a neutral atom is the _ adding electron to a negative atom is the _

Answer 9

First electron affinity

Second electron affinity

Question 10

The first electron affinities (electron added to neutral atom) are

Answer 10

Negative

Question 11

Second electron affinities (adding electron to negative atom) are

Answer 11

Positive

Question 12

Second energy affinity is positive because

Answer 12

Energy needed is more than gained

Question 13

Electron affinity is opposite to

Answer 13

Ionization energy