Classifications of Matter
The most basic substance that has unique properties and cannot be split any smaller has been given this name.
What is an element?
The number of electrons that are in the first shell
Two
This is the term for rows on the periodic table.
What is the period?
This element is highly reactive and has 4 neutrons.
What is lithium?
When two or more types of elements are bonded together
What is a compound?
The subatomic particles that make up the mass of an atom.
Protons and Neutrons
All elements in the same _____ have the same number of orbitals of electrons.
What is the period, or row?
8 neutrons (because 7 electrons means 7 protons, and 15-7=8
The two classifications for what makes something "matter".
What are mass and volume?
The number of electrons that can be in the 3rd shell.
If an ion has 25 protons, 30 neutrons and 19 electrons, the ion has this charge.
What is +6?
This is the only way to separate the elements of a compound.
What is a chemical reaction?
The Lewis diagram (so valence electrons only) for Magneisum should have this many dots around the element symbol.
What is 2?
This group on the periodic table has the least reactive elements.
What is the noble gases?
This electron exchange is how Na and Cl would complete their valence shells.
Na would lose an electron, and Cl would gain one.
This is why valence electrons are important.
What is bonding between atoms? (or chemical reactions is fine)
The element that is named after Plumbum.
Lead
This is one reason why H needs to be on the left side of the table, rather than next to He.
It only has one valence electron, so it's in the group with equally reactive elements (with one valence electron)