Chemicals/Thoriums/Quiz

File:Thorium metal.png

Just eight grams of thorium would be enough to power a vehicle for its entire life. Credit: Charles Stevens.

Thoriums is an effort, in a lecture format, to describe the chemicals of the element thorium.

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Quiz

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 Yes or No, The primary source of the world's thorium is the rare-earth, and thorium, phosphate mineral monazite.

	Yes
	No

2 Monazite can occur as a tabular

.

3 Yes or No, ²²⁷Th is also called radioactinium.

	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:

is a rare thorium mineral with the formula .

6 Yes or No, Thorium occurs in all granites.

	Yes
	No

7 True or False, ²³⁴Th is also known as Uranium X1.

	TRUE
	FALSE

8 Yes or No, At room temperature and pressure, thorium crystallizes into a face-centered cubic lattice.

	Yes
	No

9 True or False, Thorium is a silvery, radioactive, metallic element.

	TRUE
	FALSE

10 Yes or No, Thorium is chemical element number 90 in the periodic table.

	Yes
	No

Hypotheses

Main resource: Hypotheses

1. There is at least one chemical unique to Earth.

See also

• Astrochemistry/Quiz
• Biochemistry/Quiz
• Chemistry/Quiz
• Geochemistry/Quiz

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