Chemistry
ductile
Metals can be drawn into into thin sheets or wires without breaking
Malleable
Metals that can be hammered, pounded or pressed into different shapes without breakong
Gas
No definite volume, shape, fills any space available
Atomic mass
Number of protons+neutrons (average)
Atomic number
Number of protons, determines which element it is
Chemical property
Properties that determine how a substance will behave, which it will react with composition, charge, color etc
Ionization energy
The amount of energy required to remove and electron from an atoms, the higher ie-> more difficult it is to remove electrons the lower the ir-> the easier to remove electrons
Protons
The atomic number of carbon is 6, which means that carbon atoms always have 6...
Condensation
The process by which a gas becomes a liquid
Evaporation
The process by which a liquid becomes a gas, cooling process
Electronegativity
The strength with witch and atom can pull electrons to form a bond.
Mass number
The total number of protons and neutrons within an isotope
Non-metals
They are rarely metallic luster, usually gases at room temp., Aren't malleable and ductile, and are poor conductors of heat
Metals
They have metallic shine, they're usually solids at room temp., they are malleable, ductile and they're good conductors of heat and electricity cause electrons can be moved more freely between atoms
Metalloids
Used as semi-conductors in computers, elements like closer to metal are better conductors, elements closer to non-metals are weaker conductors
Covalent bonding
Valence electrons are shared between atoms, strong bonds
polar
chemical bond that has a dipolar
non polar
said a chemical bond that has no dipole
Ionic bonding
valence electrons are transferred from one atom to another. Weak bonds
Non bonding pairs
2 paired valence electrons that tend not to participate in a chemical bond
Physical change
A change in which substance changes one or more of to physical properties without transforming it into a new substance
Chemical change
A change in which the aroma of one or more substances are rearranged into one or more new substances
Molecule
A group of atoms held tightly together by covalent bonding
Chemical formula
A notation used to indicate the composition of a compound consisting of the atomic symbols for different elements of the compound and numerical subscript indication the ratio in which the atoms combine
Freezing
A transformation from a liquid to a solid
Melting
A transformation from a solid to a liquid
Atomic symbol
An abbreviation for an element or atom
Ion
An electrically charged particle created when an atom either loses or gains one or more electrons
Neutron
An electrically neutral subatomic particle
Element
Any material that is made up of only one type of atom
Isotope
Any member of a set of atoms of the same element whose nuclei contain the same number of protons but different number of neutrons
Valence electron
Electron outermost shell of an atom (bonds with chemicals)
Polyatomic Ion
Group of atoms covalently bonded together that share a charge
Liquid
Has a definite volume, no definite shape
Electrons
Has a negative charge