Periodic Table Review PS

Two elements with the same number of protons but a different number of neutrons are called...

• Ions

• Isotopes

• Electrons

• Atoms

_________________ is the weighted-average mass of all the known isotopes for an element.

• Average Atomic Mass

• Atomic Number

• Chemical Symbol

• Weight

The positively charged center of an atom is called the ___________

• Electron Cloud

• Nucleus

• Mass

• Center

The electrons are located within the _______________ around the atom

• Outside

• Electron Cloud

• Nucleus

• Quark

________ are the horizontal rows on the periodic table

• period

• group

____________ are the up and down columns on the periodic table.

• periods

• groups

The ____________ is the sum of the number of protons and neutrons in an atom.

• Atomic Number

• Atomic Mass

• Average Atomic Mass

• Chemical Symbol

Most of the elements to the left of the stair-step line in the periodic table exist as ________ at room temperature.

• solid

• liquid

• gas

• plasma

What is the term for a repeating pattern?

• isotopic

• metallic

• periodic

• transition

Which element has properties that are similar to neon?

• Aluminum

• Argon

• Arsenic

• Silver