Question | Answer |
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) |