Critical Thinking Test

[Muadib]

"The second query had to do with the question: "Which element in its radioactive form is used to test for or date the age of trees?" Excelsior answered "carbon-14", which is correct because there are in fact three isotopes or forms of carbon: carbon-12, carbon-13 and carbon-14. Only carbon-14 is radioactive and thus used for the purpose of dating (pg 3, Longman Chemistry for CXC, 2004 edition).

Had they answered carbon, without indicating which form is used for dating trees, they would have been incorrect."

Is the Answer Carbon or Carbon-14 ?

[HL]

Without looking it up.

Carbon is the element since the question ask...which element?

14C the isotope

Maybe if the question was which isotope?? Then.

[Muadib]

Is that what the question asks ? Read it again.

[Skeng DX]

video-> http://www.televisionjamaica.com/Pro...x/Videos/23585

[Muadib]

Wha di video fah ?

Yuh cyaan read ?

[Skeng DX]

so they can see it 1st hand

[Bricktop]

"The second query had to do with the question: "Which element in its radioactive form is used to test for or date the age of trees?" Excelsior answered "carbon-14", which is correct because there are in fact three isotopes or forms of carbon: carbon-12, carbon-13 and carbon-14. Only carbon-14 is radioactive and thus used for the purpose of dating (pg 3, Longman Chemistry for CXC, 2004 edition).

Had they answered carbon, without indicating which form is used for dating trees, they would have been incorrect."

Is the Answer Carbon or Carbon-14 ?

I would say the answer is carbon...carbon-14 is a radioactive isotope of the element carbon...carbon is the element and we know that in it's radioactive form it is used to test for or date the age of trees...

[Za]

"The second query had to do with the question: "Which element in its radioactive form is used to test for or date the age of trees?" Excelsior answered "carbon-14", which is correct because there are in fact three isotopes or forms of carbon: carbon-12, carbon-13 and carbon-14. Only carbon-14 is radioactive and thus used for the purpose of dating (pg 3, Longman Chemistry for CXC, 2004 edition).

Had they answered carbon, without indicating which form is used for dating trees, they would have been incorrect."

Is the Answer Carbon or Carbon-14 ?

Carbon

btw there are more than 3 isotopes of Carbon and carbon-14 isn't the only radioactive one

[Skeng DX]

the radioactive isotope used is one of the Carbon isotopes ...in this case Carbon 14 since its organic[trees]...the question asked for ELEMENT...therefore Carbon is the answer cuz radiocarbon is an isotope 'originating' from it

[Mosiah]

How much time do we need on this?

[Time]

"The second query had to do with the question: "Which element in its radioactive form is used to test for or date the age of trees?" Excelsior answered "carbon-14", which is correct because there are in fact three isotopes or forms of carbon: carbon-12, carbon-13 and carbon-14. Only carbon-14 is radioactive and thus used for the purpose of dating (pg 3, Longman Chemistry for CXC, 2004 edition).

Had they answered carbon, without indicating which form is used for dating trees, they would have been incorrect."

Is the Answer Carbon or Carbon-14 ?

"Which element in its radioactive form...?"

Which element ? Carbon! Thar is an element ...

Which radioactive isotope is to test...

Which radioactive isotope? Carbon 14 ! That is a radioactive isotope!

[Skeng DX]

ask profesah mawdy