Some minerals have a metallic luster; some have a non-metallic luster. Which is correct luster or lustre? Both luster and lustre are correct spelling for the physical property describing minerals. Luster is the American English spelling, and lustre is the British English spelling. What property ...
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(1) Define the term metallic lustre and non-metallic lustre? (2) Highlight the difference between them as well as give two example of each mineral that exhibit the major types of crystal? Explain the following observation: The most important ore of...
1) Physical state– Non-metals can exist in solidorliquid or gaseous stateat room temperature. 2) Lustre– Non-metals do not havelustre. Theydo not reflect light from their surface. (exception – diamond and iodine)Non- metals havea dull appearance. 3) Malleability -Non-metals arenon...
The silica is not responsible for a certain diuretic effect, which clearly is not very great and is probably due to saponins. A search has been made for other constituents that might explain the diuretic effect. A close relative of the common horsetail, Equisetum palustre. Animal experiments ...
A man should learn to detect and watch that gleam of light which flashes across his mind from within, more than the lustre of the firmament of bards and sages. Yet he dismisses without notice his thought, because it is his. It is easy to live for others, everybody does. I call on ...
• A good name keeps lustre in the dark.好的名卢.在黑暗中也会光芒四射。 • A good name is sooner lost than won.美誉难得而易失。 • A good name is earlier lost than won.失去美名易,得到美名难。 • A good name is better than riches.好名誉胜过有财富。 • A good medicine tas...