This document summarizes information about 7 elements - carbon, silicon, germanium, tin, lead, ununquadium, and their properties including atomic number, mass, state, color, melting and boiling points, classification, and benefits or harms. Key similarities are that most are solids and have neutral colors. Differences are that the first 3 have benefits while later ones are harmful or have no benefits. Melting and boiling points decrease with increasing atomic mass while density and conductivity increase.
2. Carbon (C)
• 6 protons & electrons
• Atomic mass = 12.011 A.U. (Atomic Units)
• Color = Black/Transparent
• Benefits:
o Helps photosynthesis process
• Can exist as a very hard substance (eg. Diamond) or as a
very soft substance (eg. Graphite).
• State of matter = solid
• Melting point = 3550 degree celsius
• Boiling point = 3825 degree celsius
• Classification = Non-Metal
3. Silicon (Si)
• 14 protons & electrons
• Atomic Mass = 28.0855 AU
• Color = Silver
• Melting point = 1414 degree celsius
• Boiling point = 3265 degree celsius
• Benefits:
o Helps tissues and skeletal systems
• State of matter = solid
• Very hard
• Classification = Semi-Metal
4. Germanium (Ge)
• 32 protons & electrons
• Atomic Mass = 72.64 AU
• Color = Gray/White
• Melting point = 938.25 degree celsius
• Boiling point = 2833 degree celsius
• Benefits:
o Boost immune system
o Balance cholesterol and blood pressure
• State of matter = Solid
• Classification = Semi-Metal
5. Tin (Sn)
• 50 protons & electrons
• Atomic mass = 118.71
• Color = Silver-white-ish
• Melting point = 231.93 degree celsius
• Boiling point = 2602 degree celsius
• Benefits:
o None for human body
o Oxidation for food
o Rustproof food cans
• State of matter = Solid
• Classification = Metal
6. Lead/Plumbum (Pb)
• 82 protons & electrons
• Atomic mass = 207.2 AU
• Color = Blue-gray
• State of matter = solid
• Benefits:
o None, poisonous
• Melting point = 327.46 degree celsius
• Boiling point = 1750 degree celsius
• Classification: Metal
7. Ununquadium (Uuq)
• Other name = "Flerovium"
• 114 protons & electrons
• Atomic mass = 289 AU
• Color = Unknown
• State of matter = solid
• Benefits:
o None, harmful due to radioactivity
• Melting point = Unknown
• Boiling point = Unknown
• Classification: Metal
8. Differences
• First 3 has benefits
• 4th has no benefit for human
• The rest = harmful/poisonous
• Melting & boiling points decrease
• Density and conductivity increase
9. Similarities
• Solid
• Has metallic ingredient (except carbon)
• Neutral/Achromatic colors & transparent
• Main oxidation state for most elements is +4
