Elements and the Periodic Table

Atomic Models

100

The modern model of the Atom is that there is a cloud-like region of electrons surrounding a nucleus containing these two particles.

Protons and Neutrons

200

This model suggested that electrons do not orbit the nucleus, but are found in a cloud with different energy levels.

Cloud Model

300

This model suggested that electrons are found in a specific orbit around the nucleus, like an onion.

Bohr's Model

400

This model, that resembles a watermelon, showed that atoms contains electrons floating within a positive charge.

Thomson's Model

500

This model used the Gold Foil experiment to show that atoms have a nucleus and resembled a cherry.

Rutherfords Model

Atomic Particles

100

This is the negatively charged particle that is found in the cloud-like region around the nucleus.

Electron

200

This is the positively charged particle in the atoms nucleus.

Proton

300

This is the Neutral particle in an atom that accounts for 1/2 of the atomic mass.

Neutron

400

This is an atom with the same number of protons and a different number of neutrons.

Isotope

500

This explains the number of protons in an element.

Atomic Number

Organizing the elements

100

The rows on the Periodic Table are called this.

Periods.

200

This is the name for one column of the periodic table, in which all of the elements share similar properties.

Group  (Family)

300

DAILY DOUBLE!!!!!!!!!

This man is known as the Father of the Periodic Table.

Dmitri Mendeleev

400

This is the unit used for measuring atomic Mass

AMU

500

This is the number of elements on the periodic table

118

Metals

100

This means that a material can be hammered or rolled into thin sheets.

Malleable.

200

This group of metals include iron, copper, nickel, gold, and silver.

Transition Metals

300

These are the most reactive metals on the periodic table.

Alkali metals

400

This is the name fro the group of metals displayed at the very bottom of the periodic table.

Actinides

500

These metals are harder, denser, and melt at higher temperatures than the alkali metals. Calcium is an example.

Alkaline Earth Metals

Nonmetals and Metalloids

100

This is an element that lacks most of the properties of a metal.

Nonmetal

200

This group of nonmetals is typically nonreactive.

Noble Gasses

300

This group of nonmetals means "salt forming," and are the most reactive group.

Halogens

400

This type of molecule has two atoms of the same element bonded together.

Diatomic Molecule.

500

This is a substance that can conduct electricity under certain circumstances but not under others.

Semiconductors.