Structure and Properties of Matter

Flashcard maker : Linda Lynch
Atomic Number
Proton number
Number of protons and neutrons
All the nucelus parts of an atom
Refers to nuclides that have the same number of neutrons but a different number of protonsRefers to nuclides that have the same number of neutrons but a different number of protons
Different counts but same total of protons/neutrons
Different amount of neutrons
Nuclear Isomers
Have same amount of protons and neutrons but different energy levels
They make up protons, neutrons, electrons
Stable Isotopes
Isotopes that do not decay
Radioactive Isotopes
Unstable nuceliu and undergo spontaneous nuclear reaction
Atomic Mass
A = Z + N (protons + neutrons)
Atomic Weight
Relative atomic mass, mass per atom sample
Nuclear Fission
Splitting of a large nucelus into smaller pices
Nuclear Fusion
Many atomic nucluei with chargers are joined together
Electron Shell
2=K, L=8, M=17, N=32
Ionic Bond
Transfer electron
Share bonds
Two substances, have to be decomponsed by chemical not physical
Homogenous mixture compopsed of two or more subtances that become one
Homogenous mixture compopsed of two or more subtances that become one
Cathode Ray
In 1800s, led to discover of electrons
Atomic Radii
Decrease from left to right
Ideal Gas Law


  1. P=pressure, V=Volume, n=number of moles, 8.315K/mol, T=temp

Alkali Metals
Group 1
Alkaline Earth Metal
Group 2
Transition Metal
Group 3-12
Group 13
Carbon Family
Group 14
Group 15
Group 16
Group 17
Noble Gases
Group 18
Period Trend, Radii

  1. Decreases from left to right  

  2. Increases from top to bottom


  1. Increases left to right 

  2. Decreases from top to bottom

Ionization Energy

  1. Increases across from left to right (period) 

  2. Decreases from top to bototm (group)

Electron Afinity

  1. More negative across a period 

  2. No change in a group

Charle’s Law

  1. Gas expands while heated 

  2. The law of volumes

Boyle’s Law
Gas contract when pressure is applied
Inorganic Compound
Lacks Carbon
Organic Compound

  1. Has Carbon 

  2. Covalent bonds  

  3. Melt at low temp 

  4.  Not water soluble

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