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Chemistry Unit

QuestionAnswer
Theory Predictions
Atom Smallest unit of an element
Element Exists as a single element
AMU Atomic Mass Unit
Atomic Number Number of protons
Atomic Symbol One uppercase and one lowercase
Atomic Mass Number of neutrons
Column Shares characteristics
A columns also known as what? A family
Row Reoccurring pattern
A rows also known as what? A period
Metals are found where? Left of the zigzag line
What are all the Physical Properties of Metals? High Luster Good Conductors High Density Ductile Malleable
High Luster Shiny
Good Conductors Allow Electricity and Heat to flow easily
High Density Atoms are close together
Ductile Drawn into thin wires
Malleable Hammered into thin sheet
Nonmetals are found where? Right of the zigzag line
What are all the physical properties of Nonmetals? Low Luster Poor Conductor Low Density Not Ductile Not Mallicable Brittle
Low Luster Dull
Poor Conductor Doesn't allow Electricity and heat to flow easily
Low Density Atoms are not close together
Not Ductile Drawn into thin wires
Not Mallicable Hammered into thin sheets
Brittle Breaks Easily
Metalloid Combination of metal and nonmetal properties
Compound/Molecule Combination of Atoms
Molecular Formula Identifies by symbol and gives the number by subscript of atoms for element bound together in a compound
Valence Outermost shell
Lewis structures are also known as what? Lewis dot diagrams or electron dot diagrams
Convalent Bonding Molecules from when atoms share valence electrons in order to fill their outer shell
ION A charged atom
ION Bonding Opposite charges attract
Isotope Unstable number of neutrons
Radioactive decays when? When an atom has an unstable number of neutrons and hultrons and it falls apart to stableize
Fission Nucleus splits
Fusion nuclei combine
Exothermic Heats out (warm)
Endothermic Heats in (cold)
Created by: 100000179292428
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