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Chemicals/Lithiums/Quiz

< Chemicals | Lithiums

Lithiums is an effort, in a lecture format, to describe the chemicals of the element lithium.

This is a piece of lithium metal floating in mineral oil. Credit: W. Oelen.

You are free to take this quiz based on the lecture/article lithiums at any time.

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Quiz

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1 Yes or No, In some 824 red giant stars, the Li I 670.78 nm line was detected in several stars, but only five objects presented a strong line.

Yes
No

2 The use of lithium to distinguish candidate brown dwarfs from low-mass stars is commonly referred to as the lithium

.

3 Yes or No, Some of the incontrovertible brown dwarf substellar objects are identified by the presence of the 670.8 nm lithium I line.

Yes
No

4 True or False, The difference between geochemical reactions and astrochemical reactions is that one is restricted to Earth.

TRUE
FALSE

5 Complete the text:

A short or

realization of a certain

or idea to

its feasibility is called a proof of

.

6 Yes or No, The spectral lines of lithium correspond to particular jumps of the electron between energy levels.

Yes
No

7 True or False, Generally, geologic materials are isotopically lighter than natural water samples because of the preferential retention of 6Li in the solid phase.

TRUE
FALSE

8 Complete the text:

The standard solar

have enjoyed tremendous success recently in terms of agreement between the predicted

structure and the results from

, but some observed properties of the Sun still defy explanation, such as the degree of { Li|lithium (i)} depletion, where the solar Li abundance is roughly a factor of

below the meteoritic abundance.

9 Yes or No, Taylor Valley glaciers have the lowest lithium concentrations and lightest δ7Li values in the McMurdo Dry Valleys aquatic system.

Yes
No

10 True or False, Some violet satellite bands are caused by those lithium atoms which undergo an optical transition while a helium atom is nearby.

TRUE
FALSE

11 Yes or No, Without another element present with which it reacts, lithium can occur as a metal.

Yes
No


Hypotheses

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Main resource: Hypotheses
  1. There is at least one chemical unique to Earth.

See also

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{{Chemistry resources}}

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