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Physical and chemical changes | Chemical reactions | AP Chemistry | Khan Academy

12,954 views

Khan Academy

Video Language:

  • English

Caption Language:

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

Accent:

  • English (US)

Speech Time:

97%
  • 6:44 / 6:54

Speech Rate:

  • 172 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

propane

/ˈprōˌpān/

noun

flammable hydrocarbon gas of alkane series.

already

/ˌôlˈredē/

adverb

Having happened or been done before this time.

different

/ˈdif(ə)rənt/

adjective

Not of the same kind; unlike other things.

melting

/ˈmeltiNG/

adjective noun verb

becoming liquefied by heat. action of liquefying. To make, become soft or liquid due to heat.

elements

/ˈeləmənt/

noun other

essential or characteristic part. Forces of the weather, usually bad weather.

classifying

/ˈklasəˌfīiNG/

adjective verb

(of adjective) describing class that head noun belongs to and characterized by not having comparative or superlative. To keep some information secret from the public.

combusting

/kəmˈbəst/

verb

consume or destroy by fire.

properties

/ˈpräpərdē/

noun other

possessions collectively. Particular qualities that people or some things have.

actually

/ˈak(t)SH(o͞o)əlē/

adverb

Used to add new (often different) information.

question

/ˈkwesCH(ə)n/

noun verb

Issue or problems you are dealing with. To ask for or try to get information.

burning

/ˈbərniNG/

adjective noun verb

Being destroyed by fire. When something is burnt by fire. To feel pain and heat.

constituent

/kənˈstiCHo͞oənt/

adjective noun

being part of whole. member of constituency.

composition

/ˌkämpəˈziSH(ə)n/

noun

Structure of a picture or image to make an effect.

talking

/ˈtôkiNG/

adjective noun verb

engaging in speech. action of talking. To make a formal speech about something.

substances

/ˈsəbstəns/

noun other

particular kind of matter with uniform properties. Particular types of material.

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