Structure
The basic units of matter and the defining structure of elements
What is the atom?
When an atom has extra electrons, it has a negative _____.
What is charge?
What two types of elements form ionic bonds?
What are metals and nonmetals?
This type of atom makes up most of the periodic table.
What are metals?
The small, dense center of an atom, made up of protons and neutrons
What is the nucleus?
An atom that has less electrons than protons
What is a cation?
The ratio of sodium (Na) and chlorine (Cl) when ionically bonded.
What is 1:1?
The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
What is the atomic number?
Positively charged particles found within atomic nuclei
What are protons?
An atom or molecule with a net (+ or -) electric charge due to the loss or gain of one or more electrons
What is an ion?
The charge gallium will have when becoming an ion.
What is 3+?
The number of protons and neutrons in a nucleus is known as this.
Uncharged particles found within all atomic nuclei
What are neutrons?
These gases have full outer energy levels and do not readily bond with other elements
What are the noble gases?
The charge astatine will have when an ion.
What is 3-?
An atom that has a different number of neutrons (greater or lesser atomic mass) than the standard for that element.
What are isotopes?
Negatively charged subatomic particle located in a cloud around the nucleus
What are Electrons?
The number of electrons that can fit in the first energy level.
What is two?
The ratio of calcium to phosphorus when ionically bonded.
What is 3:2?
Elements in the same group (column) share this.
What are properties/valence electrons/reactivity/etc?