Elements
Element Symbols
Atomic Number
Atomic Mass
Trivia
100

This element is colorless, odorless and tasteless and is essential for all life.

What is oxygen?

100
This is the chemical symbol for aluminum.

What is Al?

100

This element's atomic number is 25.

What is manganese?

100

This element's atomic mass is 65.39.

What is zinc?

100

This is the chemical formula for water.

What is H2O?

200

This element was found in glass thermometers.

What is mercury?

200

This is the chemical symbol for cobalt.

What is Co?

200

This element's atomic number is 11.

What is sodium?

200

This element's atomic mass is 6.941.

What is lithium?

200

This is the chemical formula for sodium chloride.

What is NaCl?

300

This element is mined in the Democratic Republic of the Congo and can be healthy or dangerous depending on the amount of exposure.

What is cobalt?

300

This is the chemical symbol for titanium.

What is Ti?

300

This element's atomic number is 50.

What is tin?

300

This element's atomic mass is 79.904.

What is bromine?

300

This is the abbreviation for chlorofluorocarbons.

What is CFC?

400

This is two ways that cobalt can enter the human body from the environment.

What is breathing or through cuts in the skin?

400

This is the chemical symbol for iron.

What is Fe?

400

This element's atomic number is 53.

What is iodine?

400

This element's atomic mass is 39.098.

What is potassium?

400

This is the most abundant element in the human body.

What is hydrogen?

500

This element was used as a poisonous gas during World War I.

What is chorine?

500

This is the chemical symbol for gold.

What is Au?

500

This element's atomic number is 86.

What is radon?

500

This element's atomic mass is 183.84.

What is tungsten?

500

This is the chemical formula for ozone.

What is O3?

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