Periodic Table

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
• average number of protons and neutrons
• average number of valence electrons

Why is water NOT on the periodic table?

• It is naturally occuring
• It is a compound, not an element
• It exists as a solid, a liquid, and a gas
• Its chemical formula doesn't fit

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 "metal".

• True
• False

Which of these metals is usually observed in a "liquid" state?

• Cadmium
• Indium
• Mercury
• Thallium

What is the heaviest gas on the periodic table?

• Hydrogen
• Argon
• Neon
• Radon

What is the element symbol for boron? 

• B
• Bo
• Bn
• W