Periodic Table of Elements

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

Tags

NGSS.MS-PS1-1

In the modern periodic table, elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

What does "1.00794" mean in this image?

• number of protons

• number of neutrons

• Atomic mass

Tags

NGSS.MS-PS1-1

Why is water NOT on the periodic table?

• Its chemical formula doesn't fit

• It is a compound, not an element

• It exists as a solid, a liquid, and a gas

_______ are the ROWS (run horizontally) on the periodic table.

• Families

• Groups

• Periods

___?____ are the COLUMNS on the periodic table and are organized by similar properties.

• Classifications

• Groups

• Periods

In what group number fluorine is located? (Vertical column)

• period 1.

• period 2.

• group 2.

• group 17.

As you move from left to right across the periodic table, the atomic number increases. 

• True
• False

The symbol for each element consists of the first letter (or two) of the element's name.

• True
• False

Most of the elements on the periodic table are classified as "metals".

• True

• False