PS1.5

In the first Periodic Table Model how did Mendeleev try to arrange the elements?

• alphabetical

• density

• melting point

• atomic mass

A horizontal row on the periodic table is called a

• group

• family

• period

• atomic number

A vertical column is called a...

• group

• tower

• period

• crew

Which of the following is the most metallic element in period 3?

• Boron (B)
• Sodium (Na)
• Argon (Ar)
• Silicon (Si)

Which of these element is the least metallic?

• Potassium (K)
• Carbon (C)
• Sulfur (S)
• Neon (Ne)

The number at the bottom of each square on this periodic table is the ...

• atomic number

• atomic mass

• chemical symbol

• element name

The number at the top of each square on this periodic table is the ...

• atomic number

• atomic mass

• Chemical Symbol

• Element Name

Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

Tags

NGSS.MS-PS1-1

This class of elements are sometimes called "semiconductors."

• Metals
• Nonmetals
• Metalloids
• Groups

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-3

Why do some elements have 3 letter chemical symbols?

• There are no elements with 3 letter symbols
• They are named after scientists
• They are named after places
• They have a temporary name until scientists agree on a new name.