Periodic Table

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

Alkali metals have 1 valence electron, making them highly reactive. With the exception of hydrogen, they tend to be very soft metals with low melting points. Examples include sodium and potassium.

Alkaline earth metals have 2 valence electrons and also are highly reactive and have high melting points. Examples include calcium and magnesium.

Halogens have 7 valence electrons and therefore are highly reactive. They tend to form compounds in nature. Examples include chlorine and fluorine.

Noble gases have a complete outer shell with 8 valence electrons, making them nonreactive. They are typically colorless, odorless gases. Examples include helium, neon, and argon.

Which group is highly reactive with high melting points?

• Alkaline metals

• Alkaline earth metals

• Halogens

• Noble gases

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

Tags

NGSS.HS-PS1-1

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Tags

NGSS.HS-PS1-1

Which two subatomic particles are found in the NUCLEUS of at atom?

• protons & nuetrons
• protons & electrons
• neutrons & electrons
• electrons & protons

Tags

NGSS.MS-PS1-1

If an element has 6 protons, 7 neutrons, and 6 electrons, what type of charge does the element have?

• positive
• negative
• neutral
• imaginary

Tags

NGSS.MS-PS1-1

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

If an element has 117 protons which group will it be in on the periodic table?

• 1

• 7

• 11

• 17

Tags

NGSS.HS-PS1-1

Which element is most likely to have three electron energy levels?

• Argon (Ar)

• Lithium (Li)

• Boron (B)

• Europium (Eu)

Tags

NGSS.HS-PS1-1