unit d - entire topic

Question 1

stoichiometry

Answer 1

measuring the elements

-quantities of reactions and products involved in a chemical reaction

Question 2

diagnostic tests

Answer 2

• burning a splint to test hydrogen
• burning splint to test oxygen
• lime water identifies carbon dioxide
• cobaltchlorine paper identify water

Question 3

quantitative

Answer 3

how much is there

Question 4

qualitative

Answer 4

is that thing there or is it not present

Question 5

qualitative example

Answer 5

flame test, color test, solubility

Question 6

quantitative example

Answer 6

length, mass, temperature and time

Question 7

the four ‘reactions are…”

Answer 7

• spontaneous
• fast
• quantitive
• stoichiometric

Question 8

all reactions are SPONTANEOUS

Answer 8

if these reactions are mixed, something will happen

Question 9

reactions are FAST

Answer 9

reaction rate occurs in a small amount of time

-controling this rate is really important

Question 10

reactions are QUANTITIVE

Answer 10

going to continue until one of the reactants is completely used up (limiting reagent)

Question 11

reactions are STOICHIOMETRIC

Answer 11

occurs in simple whole number ratios

Question 12

chemical analysis

Answer 12

knowledge of chemical reactions, experimental designs and practical skills

Question 13

chemical analysis example

Answer 13

breathalizer test, urin analysis, titrations, blood tests

Question 14

stoichio

Answer 14

element

Question 15

metry

Answer 15

process of measuring

Question 16

ice table

Answer 16

what you are

• starting with
• changing with and
• ending with

Question 17

limited reagent

Answer 17

only have a certain amount of, of a certain substance

Question 18

steps on limiting reagent

Answer 18

1) find the moles of reactants
2) divide by coefficent (balanced equation of those reactants)
3) smaller number is the limitor

Question 19

generalization of how to write a lab

Answer 19

• introduction (why, ask a question)
• materals list/methods/proceudres
• results (in a table)
• data analysis
• evaluation (what went well/wrong)

Question 20

STP

Answer 20

273K, 100kPa, 22.4L/mols (molar volume)

Question 21

SATP

Answer 21

298K, 101kPa, 24.8L/mols (molar volume)

Question 22

finding moles (no STP or SATP)

Answer 22

n= PV/RT

Question 23

finding moles (STP or SATP)

Answer 23

n= v/V

Question 24

molar volume

Answer 24

L/mol

Question 25

titration

Answer 25

finding a point where moles of acid and moles of base completely cancel out, neutralize

Question 26

indicator

Answer 26

helps show the 'end point'

Question 27

end point

Answer 27

permanent colior change, due to slight excess of {H30] or [OH]

Question 28

equivalence point

Answer 28

equal [OH] and [H30]

Question 29

titrant

Answer 29

solution of a known concentration | -which is added to another solution

Question 30

analyte

Answer 30

known variable

Question 31

pH

Answer 31

measure of hydrogen concentration