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Flashcards in Exam Review Deck (59)
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1

what are the strong bases?

NaOH, KOH, LiOH, Ca(OH)2, Ba(OH)2, Mg(OH)2 (alkaline and alkaline earth metals)

2

what are the strong acids

all halogens except for fluorine (Cl, Br, I), HNO3, H2SO4, HClO3, HClO4.

3

ni=nf, therefore? (this one is to make u feel smart)

CiVi=CfVf

4

how to do concentration calculations?

1. turn the % to grams
2. X given volume (in ml)

5

what is concentration?

amount of stuff in a unit of space.

6

what affects solubility

molecular size, temp, and pressure.

7

solubility in ionic compounds

ion-dipole attractions - for substance to dissolve, the water must have a stronger attraction to ions than that they have to themselves

8

how does solubility do in covalent compounds

polar dissolves polar.
dipole dipole attractions form quite strong inter molecular forces, hydrogen bonding is even stronger bonds.

9

how strong are solute-solute attractions when the solute dissolves

not as strong as the solute-solvent attractions

10

why is water a universal solvent?

water molecules are small, they are highly polar, and they form hydrogen bonds

11

how to find ions from a solution stoich

1. balanced equation and volume to L
2. mole ratio to find LR
3. find amount of element with ionic equation
4. c=n/v

12

how to find the mass of a precipitate stoich

1. volume to L
2. concentration of both known X volume to find mols
3. find limiting reactant and mols of unknown
4.times mols by molar mass to find mass

13

how to do titration stoich

1. volume to L
2. write out balanced chemical equation
3. concentration known X volume known for mols known
4. mol ratio for mols unknown
5. mol divided by volume for concentration unknown

14

how does metal reactivity change from acids to bases?

it doesnt change, both react with metal.

15

how does conductivity change from acid to base

it doesnt change, both are conductive

16

how does the colour of phenothalein change from acid to base

acids are colourless, bases are magenta

17

how does feel change from acid to base

acids have no characteristic feel, bases are slippery

18

how does taste change from acid to base

acids are sour bases are bitter

19

what is the law of partial pressures?

Ptot= Pa+Pb...

20

what is the combined gas law?

P1V1/T1 = P2V2/T2

21

what is the ideal gas law?

PV=nRT

22

what is % yield

actual/theoretical

23

what is the EF rhyme?

% to mass
mass to mole
divide by small
multiply til whole

24

how to do good ol stoich? with one known, one unknown, and no concentration crap

mass to moles, mole to mole using ratio, to other mass.

25

what is required for combustion?

fuel, oxygen, and heat.

26

what are the products of a complete combustion?

co2 and h2o

27

whats an ionic compound?

a metal with a nonmetal

28

what is a covalent compound?

a metal and metal or two nonmetals

29

how do bond dipoles work?

its an arrow, pointing to the more elcetronegative atom.

30

what affects periodic trends?

size, ionization energy, electronegativity, and electron affinity