Chapter 16 Flashcards
Scientist use ______ ______ to abbreviate element names.
CHemical Symbols
Atoms are composed of ____, ____, and _____
Protons, Neutrons, and Electrons
The electron cloud model is the current ____ _____
atomic model
____ and _____ make up most of an atoms mass
protons and nuetrons
each element has a unique number of _____
Protons
Atoms with the same element with different numbers of neutrons are called ______
Isotopes
The ___ ____ ___ of an element is the wighted average mass of all naturally occuring isotopes of that element
average atomic mass
Elements in the same vertical column on the periodic table are known as a _____
Group
(+ or o) Groups share similar physical and chemical properties
+
Elements in the same horozontal row in the periodic table are known as ____
Periods
(+ or o) Periods have the same number of energy levels
+
Elements on the periodic table are classified as ____, ____, and _____
Metals, Non-metals, and Metalloids
