Groups and Families are __________ or up and down on the periodic table.
What is vertical?
100
Mendeleev's periodic table had to be rearranged slightly because some of the elements didn't fit in the right spots. The difference between his table and the modern table is...
What is his table was arranged by atomic mass and the modern table is arranged by atomic number?
200
These two parts of the atom have opposite charges and keep the atom "balanced."
What is the proton and the electron?
200
An element's atom is identified by its ___________.
What is the atomic number or number of protons?
200
The elements on the periodic table are usually categorized as ________, ________ or _________.
What is metals, nonmetals, and metalloids.
200
This group of elements have a full valence shell and do not react with any other elements.
What is the noble gases?
200
The category of element that has both properties of metals and nonmetals.
What is the metalloids?
300
This is the part of the atom that has no charge. It is located ____________.
What is the neutron and nucleus?
300
What does the symbol He stand for?
What is helium?
300
These are the four things each of the periodic squares tells you about an element.
What is Chemical Symbol, Element Name, Atomic Number, Atomic Mass?
300
Most of the periodic table is made of this group.
What is the transition metals?
300
The nonmetals are located on the _________ side of the staircase line on the periodic table.
What is right?
400
Atoms are able to lose and gain electrons so they can create ______________.
What is molecules?
400
Use the periodic table to find how many protons, neutrons, and electrons are in Potassium (K).
What is 19 protons, 19 electrons, and 20 neutrons?
400
Elements in a family/group are in the same column because they __________.
What is share characteristics?
400
Hydrogen does not really belong to Group 1 the Alkali Metals. It is put with that group because...
What is it has only one valence electron but it doesn't share characteristics with any other family on the periodic table?
400
When atoms are forced together or split apart it is called ____________ or ____________.
What is nuclear fusion, nuclear fission?
500
Atoms are able to bond because of the ___________ electrons.
What is valence?
500
The decimal in the periodic square stands for the _____.
What is the atomic mass?
500
As the characteristics of the elements repeat __________ are formed.
What is a period?
500
These two groups bond easily because one of them gives away its valence electron and the other group needs only one electron to have a full shell. Together they form salts.
What is Alkali Metals and Halogens?
500
Most of the new elements discovered on the periodic table are _______________.