Atomic Exam

Matter

Anything that has mass and takes up space

Ions

Charged atom

Atomic Number

The number of protons in a atom

Neutral Atom

The amount of neutrons = the amount of electrons

Neutron

Has neutral charge, located inside the nucleus

Electron

Negative charge, located in the electron cloud

Electron cloud

the outer area of an atom

Valence Level

The furthest level from the nucleus

Nucleus

The center of an atom

What takes up the most mass in an atom

The nucleus

Proton

Positive charge, located inside the nucleus

Atom

The smallest unit of matter

Isotope

Variety of the same element (the same protons and the same atomic number but different versions of the same element)

Ionic Bonding

 The attraction between oppositely charged ions

Polyatomic Ions

2 elements that are charged and form a compound

Covalent Bonding

A chemical bond formed when 2 atoms share electrons

Polar Bonds

A covalent bond in which electrons are shared unequally

Non-polar bonds

When the valence electrons are shared equally

What is found in each square

Atomic number, Chemical symbol, Element name, Atomic mass

Metals

To the left of the staircase

Another name for column

family,group

Another name for row

Periods

Cation

Positively charged ion

Anion

Negatively charged ion

Single displacement

When an element switches places to form 1 new compound (ex. A+BC = AC+B)

Double displacement

When an element switches places to form 2 new compounds (ex. AB + CD = AD + CB)

Combustion

Co2 + H2o (carbon dioxide + water)

Synthesis

Putting multiple elements together (Na + Cl = NaCl)

Decomposition

A compound that breaks down into 2 or more products (AB = A+B)

Covalent bonds

2 atoms that share electrons (non-metals)

element dot diagram

has the element sign with the number of valence electrons around it

atomic sketch

circles with the number of neutrons in order (2,8,18)

Metals

Have luster, Conductors of heat/electricity, hight density + melting point, malleable, and ductile

Malleable

Hammered into thin sheets

Ductile

Made into a thin wire

Non-metals

No luster/dull appearance, not conductors of heat/electricity, not malleable/ductile, low density/melting point

Metaloids

can be shiny or dull, some conduct heat and or electricity, border zig zag line and are ductile/malleable

What makes an atom

A particle that consists of a nucleus of protons, neutrons that are surrounded by the electron cloud

Element

Chemical substance that cannot be broken down into other substances

compound

substance made from 2 or more different elements chemically combined