176 resources and 3 collections matched your query.
Library of 3383 accessible STEM media resources.
Showing resources 101 to 120 of 176
Select a resource below to get more information and link to download this resource.
Protactinium (formerly protoactinium) is a chemical element with the symbol Pa and atomic number 91. It is a dense, silvery-gray actinide metal which readily reacts with oxygen, water vapor and inorganic acids.I
(Source: Library Lyna)
Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic is a metalloid and occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal.
Technetium is a chemical element with the symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive, none of which is stable other than the fully ionized state of ⁹⁷Tc.
Rhodium is a chemical element with the symbol Rh and atomic number 45. It is an ultra-rare, silvery-white, hard, corrosion-resistant, and chemically inert transition metal. It is a noble metal.
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is a rare-earth element. It is a hard, slightly malleable silvery metal that quickly tarnishes in air and moisture.
Terbium is a chemical element with the symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife.
Bromine is a chemical element with the symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas.
Gadolinium is a chemical element with the symbol Gd and atomic number 64. Gadolinium is a silvery-white metal when oxidation is removed. It is only slightly malleable and is a ductile rare-earth element.
Plutonium is a radioactive chemical element with the symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized.
Everything is made of millions of tiny particles. Animations illustrate how matter consists of different types of particles that are responsible for varying characteristics. Concepts and terminology include atom, element, chemical, and compound.
(Source: DCMP)
Lanthanum is a chemical element with the symbol La and atomic number 57. It is a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air and is soft enough to be cut with a knife.
Promethium is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is extremely rare, with only about 500–600 grams naturally occurring in Earth's crust at any given time.
Caesium has the atomic number 55 and symbols Cs. It is an alkali metal with a silvery-gold color and the only liquid metal from the group of elemental metals, which is liquid near or at room temperature.
Cerium is a chemical element with the symbol Ce and atomic number 58. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife.
Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum. It is the only metallic element that is liquid at standard conditions for temperature and pressure.
Livermorium is a synthetic chemical element with the symbol Lv and has an atomic number of 116. It is an extremely radioactive element that has only been created in the laboratory and has not been observed in nature.
Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth.
Yttrium is a chemical element with the symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element".
Lawrencium is a synthetic chemical element with the symbol Lr (formerly Lw) and atomic number 103. It is named in honor of Ernest Lawrence, inventor of the cyclotron, a device that was used to discover many artificial radioactive elements.
Rutherfordium is a synthetic chemical element with the symbol Rf and atomic number 104, named after New Zealand physicist Ernest Rutherford.As a synthetic element, it is not found in nature and can only be created in a laboratory.
Showing collections 1 to 3 of 3
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
