Elemental Groups
Chemical Symbols
Name Derivations
Periodic Trends
Famous Elements in Use
100

This group of elements includes lithium, sodium, and potassium.

What are alkali metals?

100

The symbol for oxygen.

What is O?

100

The element helium is named after this celestial body.

What is the Sun?

100

As you move left to right across a period, atomic size does this.

What is decrease?

100

This element gives blood its red color.

What is iron?

200

These gases are colorless, odorless, and unreactive.

What are noble gases?

200

The symbol Fe stands for this element.

What is iron?

200

The name sodium comes from the Latin word soda, but its symbol Na comes from this Latin word.

What is natrium?

200

As you go down a group, elements become more of this in size.

What is larger?

200

This element is used in lightbulbs and neon signs.

What is neon?

300

Elements in Group 17 are called this.

What are halogens?

300

This element’s symbol is K, but its name doesn’t start with a K.

What is potassium?

300

Einsteinium was named in honor of this famous scientist.

Who is Albert Einstein?

300

Metals tend to do this with their electrons when forming bonds.

What is lose electrons?

300

This element is used to fill balloons because it’s lighter than air.

What is helium?

400

Iron, cobalt, and nickel are part of this section of the table.

What are transition metals?

400

Ag is the symbol for this precious metal.

What is silver?

400

Americium was named after this place.

What is America?

400

Nonmetals tend to do this with their electrons.

What is gain electrons?

400

This radioactive element was used by Marie Curie in her research.

What is radium?

500

Elements like boron and silicon that have properties of metals and nonmetals are called this.

What are metalloids?

500

The symbol W stands for this element, once called wolfram.

What is tungsten?

500

Mercury takes its name from a Roman god known for speed, but its symbol Hg comes from this Greek word.

What is hydrargyrum (meaning “liquid silver”)?

500

The most reactive group of nonmetals.

What are the halogens?

500

This element is used in batteries and is known for its explosive reactivity with water.

What is lithium?