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}}

Oxidation and reduction | Redox reactions and electrochemistry | Chemistry | Khan Academy

890,643 views

Khan Academy

Video Language:

  • English

Caption Language:

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

Accent:

  • English (US)

Speech Time:

94%
  • 10:29 / 11:04

Speech Rate:

  • 149 wpm - Conversational

Category:

  • Education

Tags :

Intro:

Video Vocabulary

nothing

/ˈnəTHiNG/

adjective adverb noun pronoun

of no value. not at all. Number or value of zero. not anything.

candidate

/ˈkandiˌdāt/

noun

Politician who is running for public office.

elements

/ˈeləmənt/

noun other

essential or characteristic part. Essential or particular parts of some things.

chlorine

/ˈklôrēn/

noun

Greenish-yellow gas with a strong smell.

molecule

/ˈmäləˌkyo͞ol/

noun

group of atoms bonded together.

sitting

/ˈsidiNG/

adjective noun verb

in seated position. Being painted or photographed by an artist. To take an exam.

imagine

/iˈmajən/

verb

form mental image of.

valence

/ˈvāləns/

noun

undefined.

periodic

/ˌpirēˈädik/

adjective

appearing or occurring at intervals.

electron

/əˈlekˌträn/

noun

A negatively charged particle.

general

/ˈjen(ə)rəl/

adjective noun

Widespread, normal or usual. commander of army.

increases
noun other verb

rise in size, amount, or degree of something. Amount something grows by. To make or become larger in size or amount.

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