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Half-life and carbon dating | Nuclear chemistry | Chemistry | Khan Academy

570,006 views

Khan Academy

Video Language:

  • English

Caption Language:

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

Accent:

  • English (US)

Speech Time:

98%
  • 12:19 / 12:31

Speech Rate:

  • 165 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

releasing

/rəˈlēs/

verb

To free someone from a responsibility or burden.

radioactive

/ˌrādēōˈaktiv/

adjective

Emitting harmful energy from nuclear activity.

different

/ˈdif(ə)rənt/

adjective

not same as another or each other.

another

/əˈnəT͟Hər/

adjective determiner pronoun

One more, but not this. One more added. additional person or thing of same type.

electrons

/əˈlekˌträn/

noun other

stable subatomic particle with charge of negative electricity. A negatively charged particle.

positron

/ˈpäzəˌträn/

noun

subatomic particle with same mass as electron.

isotopes

/ˈīsəˌtōp/

noun other

each of two or more forms of same element. Chemical element nearly identical, but with differing weights.

talking

/ˈtôkiNG/

adjective noun verb

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

collection

/kəˈlekSH(ə)n/

noun

Act of asking for money for a debt or a charity.

relevant

/ˈreləvənt/

adjective

Having an effect on an issue; related or current.

neutrons

/ˈn(y)o͞oträn/

noun other

subatomic particle of about same mass as proton but without electric charge. Charge and mass about equal to a proton; enters into the structure of the atomic nucleus.

question

/ˈkwesCH(ə)n/

noun verb

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

amounts

/əˈmount/

noun other verb

quantity. (Values) added up to a certain figure. come to be total.

emission

/əˈmiSH(ə)n/

noun

A substance (e.g. gas) released into the air.

experiencing

/ˌikˈspirēəns/

verb

To gain knowledge by doing things.

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