1. Hydrogen
15. Phosphorus
17. Chlorine: Extremely reactive and yellow-green halogen gas and strong oxidising agent, used to purify water (e.g. swimming pools), and as a disinfectant and bleach.
31. Gallium
33. Arsenic
34. Selenium
35. Bromine
36. Krypton
38. Strontium
39. Yttrium
40. Zirconium
41. Niobium
42. Moly
44. Ruthenium
45. Rhodium
46. Palladium
47. Silver
49. Indium
50. Tin
51. Antimony
52. Tellurium
53. Iodine
54. Xenon
55. Caesium: Extremely reactive, soft, silvery-golden and rare alkali metal and one of the few metals that are liquid at near room temperature, used in atomic clocks, drilling fluids, electronics and medical applications
56. Barium
57. Lanthanum
59. Praseodymium
93. Neptunium – Silvery metallic radioactive, poisonos, pyrophoric actinide known as the 1st transuranic element, is capable of accumulating in bones, has no commercial applications, and was discovered in 1940 by McMillan and Abelson
100. Fermium – Syntehtic radioactive actinide/transuranic metal that is the heaviest element that can be formed by bombardment of lighter elements and was discovered in 1952 in debris from the 1st hydrogen bomb together with einsteinium.
Alchemy – The ancient and medieval ‘proto-science’ and philosophy that sought to transform common materials into more valuable substances.
Atom – the smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.
Bacteria – Antonie van Leeuwenhoek
Bolometer – device that can be used to measure quantity of Electromagnetic radiation
Calorimeter – device that can be used to measure this quantity of heat of chemical reactions
Catalyst – A substance that increases the rate of a chemical reaction without being consumed or permanently changed by the reaction itself.
Chemical bond – Any of several attractive forces that serve to connect atoms together to form molecules.
Chemical reaction – a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
Combustion – an exothermic redox reaction between a fuel and an oxidant, most commonly oxygen, that produces energy in the form of heat and light, often as a flame.
Conductivity – a measure of a substance’s ability to allow electric current or heat to flow through it.
Corrosion – The gradual destruction or deterioration of a material, usually a metal, through chemical or electrochemical reactions
with its environment, such as air, moisture, or chemicals.
Crystal – a solid composed of an array of atoms or molecules arranged in a highly ordered, repeating, microscopic, symmetrical, three-dimensional pattern extending in all directions.
Electron – Subatomic particle having a negative charge and orbiting the nucleus.
Element – a pure substance composed of only one type of atom, meaning all its atoms have the same number of protons.
Endothermic reaction – A chemical process that absorbs energy, typically in the form of heat, from its surroundings, causing the surroundings to become colder.
Energy – a quantity that denotes the ability to do work or supply heat/light.
Inert – A substance that is not chemically reactive with other substances, or is very unreactive.
League – unit of Distance
Mass – the quantity of matter contained within an object or substance.
Metal – a substance, typically a chemical element or alloy, characterized by high electrical and thermal conductivity, malleability, ductility, and a shiny or lustrous appearance.
Nucleus – the massive, positively charged central part of an atom, made up of protons and neutrons.
Neutron – A subatomic particle forming part of the nucleus of an atom and having no charge.
Phase – A chemically and physically uniform portion of matter, like solid, liquid, or gas.
Pressure – the force exerted per unit area, typically from gas particles colliding with the walls of a container.
Proton – A positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element.
Solid – a state of matter characterized by a definite shape and volume, where constituent particles (atoms, molecules, or ions) are tightly packed in fixed positions and can only vibrate.
Planets
Areology – Study of Mars
Thebe – Jupiter
Saturn – Hyperion – 6 – lowest average density
Umbriel – satellite that orbits Neptune
Trinitrotoluene (T.N.T.) – C7H5N306
70. Heptacontagon
hexafu 