Atomic Structure
Negatively charged component in an atom.
Electron
The mass number is found by adding _____ and _____
Protons and Neutrons
How elements are arranged in the periodic table.
Increasing atomic number.
Neutrons
The value you use to convert between moles and grams.
Molar mass
The smallest particle of an element that still has the properties of the element
Atom
Matter made of only one type of atom or molecule.
Pure substance
These type of elements are malleable, shiny, and conduct heat and electricity.
Metals
Naming an isotope, use the element name - this number.
Mass number
The mass of 1 mol of Carbon.
12.01 grams
Structure at center of atom.
Nucleus
The number of protons in an atom of an element found on the periodic table is called this.
Atomic Number
Elements that have properties of both metals and nonmetals.
Metalloids
In A/Z X form, the A stands for this.
Atomic mass
The grams in 0.0816 moles of gold.
16.1 g Au
Positively charged subatomic particle.
Proton
A substance made of two or more elements chemically joined.
Compound
A pure substance that can't be broken down into a simpler pure substance.
Element
8 (14-6 = 8)
The number of moles in 2.75 grams of lead.
0.0133 mol Pb
Neutral subatomic particle.
Neutron
If the number of protons changes, you have this.
A new element.
The element with 12 electrons in a neutral atom.
Magnesium
The name of the isotope with 12 protons and 10 neutrons.
Magnesium (Mg)-22
The number of atoms in 4.5 grams of Al.
1.0 x 1023 atoms Al