Element Basics
Symbols and trends
Real world
100

This element is the most abundant gas in Earth’s atmosphere.

What is Nitrogen?

100

The symbol for Potassium.

What is K?

100

This element is used in lightbulbs and signs.

What is Neon

200

The element that keeps us alive by helping our blood carry oxygen.

What is Iron?

200

Symbol for Silver.

What is Ag?

200

Aluminum is commonly used in ____.

What are cans / foil / airplanes?

300

The lightest element on the periodic table.

What is Hydrogen?

300

Symbol for Iron.

What is Fe?

300

Sodium and chlorine combine to make ____.

What is table salt?

400

This element makes up about 75% of the Sun.

What is Hydrogen?

400

The number of protons in an atom determines its ____.

What is an atomic number?

400

Copper is mainly used for ____.

What is electrical wiring?

500

This yellow, nonmetal element is used in matches and fireworks.

What is Sulfur?

500

Atomic size increases as you move ____.

What is down a group?

500

Gold is often used in ____.

What are jewelry / electronics / coins?

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