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Chemicals/Hydrogens/Quiz

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Spectrum = gas discharge tube filled with deuterium D2, used with 1.8 kV, 18 mA, 35 kHz. ≈8" length. Credit: Alchemist-hp.

Hydrogens is an effort, in a lecture format, to describe the chemicals that are the element hydrogen.

You are free to take this quiz based on the lecture hydrogens at any time.

To improve your score, read and study the lecture, the links contained within, listed under See also, External links, and in the {{chemistry resources}} and {{geology resources}} templates. This should give you adequate background to get 100 %.

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Quiz

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1 Yes or No, Chemical reactions are associated with some changes in the chemical nature/properties of chemicals.

Yes
No

2 The emission spectrum of atomic hydrogen is divided into a number of spectral series, with wavelengths given by the

formula.

3 Yes or No, Some hydrogen spectral lines fall outside the usual series, such as the 21 cm line; these correspond to much rarer atomic events such as hyperfine transitions.

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 hydrogen correspond to particular jumps of the electron between energy levels.

Yes
No

7 True or False, The lightest and most common isotope of hydrogen, having a single proton and no neutrons- 11H is called protium.

TRUE
FALSE

8 Complete the text:

A natural

that deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their

is called

.

9 Yes or No, A reaction for which no reaction intermediates have been detected or need to be postulated in order to describe the chemical reaction on a molecular scale is called an elementary reaction.

Yes
No

10 True or False, Use of an appropriate hydrogen level is necessary to favor dehalogenation of chlorinated solvents over other hydrogen using processes.

TRUE
FALSE

11 Yes or No, Deuterium is an isotope of helium.

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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{{Geology resources}}

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