Add picture of periodic table

Periodic Table A chart that shows each of the known elements – the elements are grouped based on their properties.

What can I learn about matter from the Periodic Table?

chemical symbol

element name

Each box represents one type of matter (one element)

The chemical symbol represents the element and is written as either one (capital) letter or two letters (the first capital and the second lowercase).

Element names don’t always “match” their chemical symbols because they had Latin names.

What can I learn about matter from the Periodic Table?

atomic number The atomic number is found at the top of the box.

The atomic number is the number of protons in one atom of that element.

The atomic number increases as you go across a period (row).

What can I learn about matter from the Periodic Table?

atomic mass The atomic mass is found at the bottom of each box.

Atomic mass is measured in AMU which stands for Atomic Mass Units – atoms are very small, and so AMU are much less than milligrams.

What can I learn about matter from the Periodic Table?

valence electrons Columns on the Periodic Table are called groups.

Elements in each group have the same number of valence electrons.

Each group has elements with similar properties because they have the same number of valence electrons.

Group #1 are the alkali metals, and they are very reactive.Group #17 are the noble gasses and they are non-reactive.