The Table and Elements

The most reactive metals are found in these groups.

This is the number of the group where are halogens are found.

Isotopes are isotopes because the number of these is different.

This happens when an unstable atomic nucleus changes into another nucleus.

This is time it takes for a radioactive isotope to decay to half its original mass.

This is the ability of a material to transfer electricity or thermal (heat) energy.

Elements in these often have similar chemical and physical properties.

This is the icon that is on the solid elements.

The process of naming elements is fairly simple.

A scientist who develops an element gets to name it!

This is another word for luster.

These are also known as metalloids.

This is a good word to describe non-metals.

What is the symbol for the element Carbon?

This person won the Nobel Prize in Chemistry in 1911 for the discovery of polonium and radium.

The is a vertical (up and down) column on the table of elements.

If an atom is made by humans it is called this.

Some radioactive isotopes decay by changing their neutrons into different particles.

There are this many regions on the table of elements.

There is more than one type of table of elements.

This region has the most elements.

Scientists have made elements with high atomic numbers using this.

This determines the kind of bond that is formed.

These are the horizontal (left to right) rows of elements.

This is the number of groups in the current periodic table of elements.

This is the number of neutrons plus the number of protons.

These are extremely stable by themselves.

These determine the chemical properties of an element.