Term | Definition |
This element has 12 protons | Mg (Magnesium) |
Positively charged particle found in the nucleus | Proton |
Vertical columns of elements that share similar characteristics | Groups |
The ability to stretch metal into wires | Ductile |
Element with the symbol Au | Gold |
Particle with no charge | Neutron |
Horizontal row of elements that have the same number of shells | Periods |
This nonmental is a liquid at room temp | Bromine |
This group is the most reactive on the PT | Alkali Metals |
The elements found in period 6 at the bottom of the PT | Lanthanides |
The elements found in period 7 at the bottom of the PT | Actanides |
The number of periods on the PT | Seven |
The ability to pound metal into sheets | Malleable |
Electrons in the outermost shell | Valence Electrons |
The number of groups on the PT | Eighteen |
Atoms with a charge | Ions |
An atom that has lost an electron | Cation |
The Russian scientist credited with organizing the PT in 1869 | Mendeleev |
The number that makes atoms happy | Eight |
The number of protons in the nucleus of an atom | Atomic Number |
This metal is a liquid at room temp | Mercury |
Smallest unit of matter | Atom |
"Eating away at" | Corrosive |
Negatively charged particles | Electrons |
This group is the most stable on the PT | Noble Gases |
Location of protons and neutrons | Nucleus |
Ionic ___________ conduct electricity when dissolved in water | Compounds |
This model is used to represent atoms by drawing a nucleus and shells | Bohr models |
An atom that has gained at electron | Anion |
Element with the symbol Ag | Silver |
The number found on the bottom right of atom | Subscripts |
This level can hold a maximum of 2 electrons on its shell | First |