scientists & models
Called the invisible particles that make up matter "atomos"
Who is Democritus?
The columns on the periodic table are called...
What are groups/families?
The rows on the periodic table are called...
What are periods?
Chemical bonds involve what kind of electrons?
What are valence electrons?
These elements are found along the stair step of the periodic table.
What are metalloids?
What scientist made the model we use in class when diagramming atoms?
Who is Neils Bohr?
When an element has a different number of neutrons than normal it is called a
What is an isotope?
Produced when atoms gain or lose electrons.
What are ions?
Ionic bonds involve what kind of elements?
Nonmetals and metals
These elements have low boiling/melting points, dull, and are good insulators.
What are nonmetals?
John Dalton made which model?
(HINT: looks like you can use it in a game of pool)
What is the Billard Ball Model?
Name for the group of metals that are the most reactive elements on the periodic table and have one valence electron.
What are the Alkali Metals?
If an element has 29 protons, how many electrons will it have?
What is 29?
In covalent bonds, valence electrons are
What is shared?
These elements typically want to lose their valence electrons in chemical reactions.
What are metals?
J.J. Thomson created this model.
(any of the three names will work)
What is the plum pudding/blueberry muffin/cookie model?
What element is located in Group 17, period 4?
What is Bromine?
Name of the group that contains highly reactive nonmetals with seven valence electrons
What are halogens?
Acetate, C2H3O2 would be considered what type of compound?
What is covalent?
Can exist as a solid, liquid, or gas at room temperature?
What are nonmetals?
What is the name of the model that first introduced the nucleus?
What is the cloud model?
What group of elements do not readily/easily form bonds with other elements?
What are Noble Gases?
The subatomic particle we use to identify elements.
What are protons?
Combining Potassium (K), Chlorine (Cl), and Oxygen (O) would result in what type of bond?
What is polyatomic?
These elements are considered to be "semiconductors".
What are metalloids?