periodic table

Mendeleev arranged the elements according to increasing?

• atomic number

• density
• melting point
• mass

Match the Following!

• mercury

• is the only metal that is a liquid at room temperature.

• period

• This class of elements are sometimes called "semiconductors."

• metalloids

• The horizontal row on the periodic table is called a

• group

• A rule that states that repeating chemical and physical properties of elements change periodically with the atomic number of the elements is the

• periodic law

• The vertical column on the periodic table is called a

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

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

What group of elements are in the center of the periodic table and don't have individual names?

• Alkaline-earth Metals
• Transition Metals
• Alkali Metals
• Halogens

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

• Metals
• Nonmetals
• Metalloids
• Periods

What does 12.011 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

What does the C represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Which one of these is not a noble gas?

• Helium
• Radon
• Iodine
• Krypton

Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.

• numbers, rows

• masses, rows

• masses, column

• numbers, column

___________ is the only metal that is a liquid at room temperature.

• Platinum
• Water
• Tin
• Mercury