YOLO exam

Question 1

A(g) + e- → A- (g) + energy

Answer 1

electron affinity

Question 2

A(g) + energy → A+(g) +e- (first ionization

Answer 2

ionization energy

Question 3

Polarity Scale

Answer 3

Non polar 0-.4, polar covalent is from 0.4 to 1.7 and ionic is from 1.7 onwards

Question 4

Boiling point stuff

Answer 4

Large electron cloud leads to large polarization which leads to large London dispersion forces and high boiling point

Question 5

Chains of molecules with non-polar components solubility

Answer 5

Molecules that have an –oh bond can dissolve in water and do Hydrogen bonding but if the molecular chain is longer, more likely to have LDF which makes it more soluble.

Question 6

red litmus

Answer 6

Used to identify bases. turns blue

Question 7

blue litmus

Answer 7

Turns red when acidic

Question 8

When drawing VESPR diagrams

Answer 8

Don’t forget to draw dipoles (the plus arrow thing), baby deltas to indicate the direction of the polarity again and that open space thing to show lone pairs. please say “net dipole” always

Question 9

Binary ionic compounds are formed when

Answer 9

Metal carbonates decompose, metal and non metal, metal hydroxide decomposing`

Question 10

To generate carbon dioxide gas

Answer 10

Decompose a metal carbonate

Question 11

To generate a metal oxide

Answer 11

Decompose a metal carbonate or a metal hydroxide

Question 12

in combustion reactions

Answer 12

Heat must be released, not absorbed. also, these combustion reactions are also technically synthesis reactions

Question 13

Net dipole

Answer 13

OKAY

Question 14

Arrhenius acids and bases

Answer 14

Release H+ and OH- when dissolved in water

Question 15

Bronsted and lowry acids and bases

Answer 15

Acids donate protons (H+) to another substance while bases accept a proton. this theory has hydronium and water as a base. conjugate acids and bases are here too. any negative ion is a bronzed base??

Question 16

pH

Answer 16

-log[H+]

Question 17

pOH

Answer 17

-log[OH-]

Question 18

[H+] times [OH-]

Answer 18

1.0 times 10^ negative 14

Question 19

[H+]

Answer 19

Antilog(-pH)

Question 20

[OH-]

Answer 20

Antilog(-pOH-)

Question 21

strong acids and bases

Answer 21

dissociate (ionize) completely while weak acids and bases don’t

Question 22

in acidic solutions

Answer 22

concentration of hydronium is more than oh-

Question 23

problem with Arrhenius

Answer 23

useful for neutralization reactions but not for H+ can’t exist alone, water is polar so there must be an interaction can’t explain ammonia. reactions in non-polar solvents don’t follow this theory, only solvent of water

Question 24

bronzed is good

Answer 24

any negative ion can be a base, acid base reaction is just transfer of proton and can occur in any substance, not just water

Question 25

in acid base reactions

Answer 25

moles of Hydrogen equal moles of OH