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100

What element has the symbol O?

Oxygen

100

What is the chemical symbol for carbon?

C

100

What is the most abundant element in the human body by mass?

Oxygen

100

Which element is the main metallic element in drink cans?

Aluminium

100

Which element is added to swimming pools to help kill harmful bacteria?

Chlorine

200

What element has the symbol Fe?

Iron

200

What is the chemical symbol for calcium?

Ca

200

What is the most abundant element in the universe?

Hydrogen

200

Which two elements make up ordinary table salt?

Sodium and Chlorine

200

Which metal is being used in batteries in electric vehicles?

Lithium

300

What element has the symbol K?

Potassium


300

What is the chemical symbol for copper?

Cu

300

What is commonly considered the rarest naturally occurring element on Earth?

Astitine

300

Which element is found in the graphite inside most traditional pencils?

Carbon

300

Which element is a liquid metal at room temperature and was traditionally used in thermometers?

Mercury

400

What element has the symbol Ag?

Silver


400

What is the chemical symbol for lead?

Pb

400

What is the most abundant metal in Earth's crust?

Aluminium

400

Which two elements make up water?

Hydrogen and Oxygen

400

What element makes up most of the Suns mass?

Hydrogen

500

What element has the symbol W?

Tungsten

500

What is the chemical symbol for antimony?

Sb

500

Which element has historically been quoted among the most expensive elements per gram, with prices reaching tens of millions of dollars per gram?

Californium

500

Brass instruments are made up of which 2 metals?

Copper and Zinc

500

Which element is used in light-up signs and produces a distinctive reddish-orange glow?

Neon

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