By Levels

Library

EXP: 08888
HITS: {{lyricTraining.hits}}888
STREAKS: {{lyricTraining.streaks}}888
TIME: {{lyricTraining.timeout / 1000}}88
{{word.word}}

{{cue.translated_text}}

{{lyricTraining.hint}}

x{{playblackSpeed.toFixed(2)}}

Loading ..

Not Found

{{annotation.word}} ({{annotation.pos_simplify}})

/{{annotation.phonetic}}/

{{annotation.translation}}

{{annotation.name}}

{{annotation.sub_type}}

{{annotation.definition}}
Back

Games & Quizzes

Training Mode - Typing
Fill the gaps to the Lyric - Best method
Training Mode - Picking
Pick the correct word to fill in the gap
{{game.name}}
{{game.description}} Requires {{game.required_annotions}} vocabulary annotations

Congratulations! You gained {{totalPoint}} XP

You may need to watch a part of the video to unlock quizzes

Don't forget to Sign In to save your points

Repeat Skip ({{game.question_index}}/{{game.questions.length}})
{{part}}
Repeat Skip ({{game.question_index + 1}}/{{game.questions.length}})
{{choice.text}}
{{choice.text}}

Make correct pairs from two columns

{{lyricTraining.finished && lyricTraining.timed_out ? 'Timed Out' : 'Challenge Accomplished'}}

PERFECT HITS {{lyricTraining.stats.PERFECT_HITS}} +{{lyricTraining.stats.PERFECT_HITS * 20}}
HITS {{lyricTraining.stats.HITS}} +{{lyricTraining.stats.HITS * 10}}
LONGEST STREAK {{lyricTraining.stats.LONGEST_STREAKS}} +{{lyricTraining.stats.LONGEST_STREAKS * 10}}
REMAINING TIME {{lyricTraining.timeout / 1000}}s +{{lyricTraining.timeout / 1000}}
TOTAL +{{lyricTraining.exp}}
{{word.word}} - {{dictionary.definition[0].phonetic || ("/" + dictionary.phonetics +"/")}} - {{word.translation}}

We couldn't find definitions for the word you were looking for.
Or maybe the current language is not supported

{{simpleDefinition.pos}}

{{simpleDefinition.def}}

{{word.word}}

Sentences & parts of speech:

  • {{tag.normal}} {{tag.pos_name}}

  • {{c.startTime | duration}}


    {{c.translated_text}}

All {{pos.pos_simplify}}
{{a.word || a.name}}
/{{a.phonetic}}/
{{a.type || a.sub_type}}
{{a.translation}} 		{{a.definition}}

Titrations of polyprotic acids | Acids and bases | AP Chemistry | Khan Academy

15,701 views

Khan Academy

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

98%
  • 8:35 / 8:44

Speech Rate:

  • 158 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

represent

/ˌreprəˈzent/

verb

To act or speak for another person or other people.

aqueous

/ˈākwēəs/

adjective

of or containing water.

showing

/ˈSHōiNG/

noun verb

action of showing something, or fact of being shown. To be easily seen or displayed.

hydroxide

/hīˈdräkˌsīd/

noun

Chemical compound containing the hydroxyl group.

overall
adjective adverb noun

Viewed as a whole; in general, not as details. taken as a whole. trousers formerly worn as part of army uniform.

protonated

/ˈprōtnˌāt/

verb

Transfer a proton to (a molecule, group, or atom) which forms a coordinate bond to the proton..

protons

/ˈprōˌtän/

noun other

stable subatomic particle occurring in all atomic nuclei, with positive electric charge equal in magnitude. Tiny part of atom with positive electrical charge.

solution

/səˈlo͞oSH(ə)n/

noun

Mix of a liquid and a solid or a gas.

example

/iɡˈzampəl/

noun verb

Thing, person which represents a category. be illustrated or exemplified.

structure

/ˈstrək(t)SHər/

noun verb

arrangement of and relations between parts or elements of something complex. To plan, organize, or arrange the parts of something.

convert
noun verb

person who has changed faith or belief. To switch from a religion, belief etc. to another.

alanine

/ˈaləˌnēn/

noun

Crystalline amino acid that occurs in many proteins.

neutral

/ˈn(y)o͞otrəl/

adjective noun

Something with pH value of 7. Person/country not supporting a side in a war, etc..

Q
W
E
R
T
Y
U
I
O
P
A
S
D
F
G
H
J
K
L
Z
X
C
V
B
N
M