Vocabulary Definition
Oxidation Number
a number that describes the total number of electrons that an atom can either gain or lose
Sodium (Na) and chlorine (Cl) combine to form stable crystals of sodium chloride (NaCl), also known as common salt.
Ionic Bond
Aluminum
Al
+3
Define "The atomic model"
a model used to describe the structure and makeup of an atom.
Metallic Bonds
A type bond present between two metals
Two atoms of iodine (I) combine to form iodine (I2) gas.
Covalent Bond
Barium
Ba
+2
Define "The Bohrs Model"
consists of a small nucleus (positively charged) surrounded by negative electrons moving around the nucleus in orbits
Nonpolar Covalent Bonds
A covalent bond between two atoms where the electrons are equally distributed
Sodium and Metal
Metallic Bond
Cobalt
Co
+2 and +3
Define "Periodic Table of Elements"
arranges the chemical elements into rows ("periods") and columns ("groups")
Octet rule
A set of rules that dictates an atom’s stability due to the number of electrons in its valence shell. Total of eight
Magnesium (Mg) and oxygen (O) combine to form magnesium oxide (MgO).
Galium
Ga
+3+3
Answer "what type of reaction release heat into the surroundings"
What is an exothermic reaction?
Ionic
A type of chemical compound that’s composed of ions held together by chemical bonding
a type of chemical bond that is formed when electrons are shared equally between two atoms
non polar covalent bond
Boron
B
+3+3
Answer "Who is credited with the invention of the modern periodic table?"
Dmitri Mendeleev in 1869