Chemistry Flashcards
Atomic mass
The number of protons and neutrons in an atoms nucleus
Atomic number
The number of protons in an atoms nucleus
An atom
The smallest unit of a element
Chemical family
A column of elements with similar characteristics on the periodic table
Chemical formula
A notation that indicates the types and numbers of atoms in a pure substance
Chemical property
A property of a element that is determined when the composition of the substance is changed, and one or more new substances are produced
Compound
A pure substance composed of two or more chemical joined elements
Density
The measure of how much mass is contained in a given unit volume of a substance, usually measured in mass per unit volume
Electron
A negatively charged particle in an atom
Electron shell
The shell on the outside of the nucleus that contains the electrons
Element
A pure substance that cannot be broken down into any simpler means by any chemical or physical means
Element symbol
An abbreviation for a chemical element
Green chemistry
Chemistry that is eco friendly
Lewis dot diagram
A diagram that shows valence electron in an atom
Metal
An element that is lustrous, malleable, ductile, and conducts heat and electricity
