The samples (except gases) weigh about 0.25 grams each, and the whole set comes in a very nice wooden box with a printed periodic table in the lid. To learn more about the set you can visit my page about element collecting for a general description and information about how to buy one,...
Really strange looking nodules. The distinction between nodules and nuggets is that nodules are formed by precipitation or other chemical action while nuggets are formed by mechanical action in the solid state. At least, I think that's the distinction implied by this letter from the US Geological...
1. **问题分析**:题目要求在元素周期表中,判断符号“Fe”对应的元素名称。选项包括a) 铁、b) 氟、c) 金、d) 银。 2. **元素符号记忆**: - Fe是拉丁文“Ferrum”的缩写,对应英文“Iron”,即铁。 - b) 氟的正确符号是“F”(来源于Fluorine)。 - c) 金的符号是“Au”(来源于拉丁文Aurum)。 -...
14 Lithium is an element in Group 1 of the Periodic Table.Lithium is stored in oil to prevent it from coming into contact with air and water.(a) When a piece of lithium is removed from the oill, dried and cut, the exposed surface(1)□ A bubbles and fizzes□ B changes from shiny ...
Poster sample. An example of the element Francium Sample Image|Spin Video|QuickTimeVR Rotation
More so than any of the other major groups of elements in the periodic table, the transition metals have shaped human history and have been the workhorses of industry. The discovery of metallic copper ended the Stone Age and ushered...
5 ways the heaviest element on the periodic table is really bizarreDan Garisto
The mold is made of cast iron with a Teflon non-stick coating (unaffected by molten zinc) from Williams-Sonoma. Source: Theodore Gray Contributor: Theodore Gray Acquired: 15 September, 2005 Text Updated: 29 January, 2009 Price: Donated Size: 3" Purity: 99.95% ...
15 Rubidium is an element in Group I of the Periodic Table. Which one of the following statements about rubidium is incorrect?Rubidiun has a low density. B Rubidium is soft and can be cut with a knife. C Rubidium reacts explosively with water to form an alkaline solution. D Rubidium is...
A4 Astatine, At, is an element in Group VIl of the Periodic Table. It exists as diatomic molecules similar to the other elements in the same Group. 2 isotopes of astatine are known to exist: astatine-210 and astatine-211. It reacts with strontium (Sr) to form the compound strontium ast...