Atomic Structure
Top Number
Most reliable way to determine what an element is.
What is a proton?
These determine how many electron shells an atom may have. Every element in this section have the same energy shells.
What is a period?
This is the amount of protons are in Gold (Au)
79
Boron has both metal and non metal characteristics.
What is a metalloid?
You should do these things to your periodic table as soon as you get it.
What is Write out your periods, groups, valence electrons, and families.
Negative charge, super light weight.
What is an Electron?
A selection of elements that have the same characteristics, the same reactivity, and the same valence electrons.
What is a group?
These are the amount of electrons are in Hafnium (Hf)
72
Calcium can be put into milk, but its normally found as a solid. Its in the Alkaline family and on the left side of the Periodic Table.
What is a Metal?
What is a good indicator of reactivity or being in the same group?
What are Valence Electrons?
Isotopes can be different in each atom, which is why these subatomic particles are not good for determining what an element is.
What is a Neutron?
These families contain the most reactive chemicals because they are either so close to completing the octet rule or they are very far from the octet rule. They are both desperate to be stable.
What are halogens and alkali metals?
This is the equation to find the Neutrons in an element.
What is
atomic mass - atomic # = Neutrons
Very reactive chemicals, these are found on the right side of the periodic table. Carbon, Helium, and Nitrogen all fall in this category.
What is a Non Metal?
This is how you should answer a question on the test. There should be 4.
what is:
1.READ the question slowly and twice.
2.Eliminate the answers that are dumb and could not make sense.
3.Remember to use your completely fill out the periodic table.
4. Use your UGLY to annotate the question
This is where you can find electrons; Its is on the outside of the nucleus.
What is the Electron Cloud?
These electrons can can also double as a hint to which group an element is in. Transition metals do not bond so they have 0 of these. They are located in the outer shell. Every element in the same group has the same number of these.
What is a valence electron?
This is the number of Neutrons in the element Tungsten (W)
110.84
Good conductors of electricity. Best for retaining heat. not many valence electrons.
What is Metals?
What is:
Top number is the Atomic Number.
Bottom number is the Atomic Mass.
This is put in order from largest to smallest atom depending on its weight and its protons. Can be read like a book from left to right, from period to period.
Periodic Table of Elements.
These trends go up and down, and side to side in the periodic table.
Going left to right: they determine how many energy level an element will have. Every element in the same row will have the same number of shells. There are 7 of these.
Going up and down: These elements in the same columns have the same number of valence electrons, the same reactivity, and the same physical characteristics. There are 18.
What are periods and groups?
This is the amount of Neutrons in Barium (Ba)
81.33
Dull appearance, really good for bonding and reacting, many of them are super toxic.
What are non-Metals?
What is Read. The. Question.