Vocab
Models
Masses of Atoms
The Periodic Table
Elements and their Properties
100

A positively charged subatomic particle

What is a proton?

100

The first proposed atomic model that suggested all elements consisted of tiny, solid particles that cannot be subdivided.

Who is Democritus?

100

The way to determine the number of protons in a specific element.

What is the atomic number?

100

The group number for Strontium.

What is group 2?

100

Elements that are shiny, malleable, ductile, and good conductors.

What are metals?

200

Where most of the mass of an atom is located.

What is the nucleus?

200

Todays accepted atomic model.

What is the electron cloud model?

200

The formula for calculating the number of neutrons in an atom.

What is (atomic mass - protons)?

200

The number of electrons that can fit in the second energy shell.

What is 8 electrons?

200

All elements in group 1 of the periodic table.

What are alkali metals?

300

Atoms of the same element that have different number of neutrons.

What is an isotope?

300

Solar system model that can represent energy levels being filled by a specific number of electrons.

What is Bohr's Model?

300

The charge on a Calcium atom that loses 3 electrons.

What is 3+?
300

The region of the periodic table that Arsenic resides in.

What are metalloids?

300

The first row of inner transition elements. Atomic numbers 90-103.

What are the lanthanides?

400

Vertical columns in the periodic table that tell you the number of valence electrons of the elements in that column

What is a group?

400

The idea that the positive charge of an atom remains in the center atomic nucleus that is surrounded by electrons.

What is Rutherford's model?

400

The number of neutrons in the isotope potassium-40.

What is 21 neutrons?
400

The electron dot diagram for Aluminum.

What is 

400

Elements that conduct electricity under certain conditions.

What are semiconductors?

500

It forms when a positive ion (metal) combines with a negative ion (nonmetal).

What is an ionic bond?

500

A Bohr model that represents the element Neon.

What is 

500

Lithium and bromine form an ionic bond, this is the number of electrons Bromine gains and lithium loses.

What is 1 electron?

500

The electron dot diagram for Selenium

What is 

500

When two nonmetals share electrons and form a bond.

What is a covalent bond?