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varieties. Color steel gray in specular hematite, dull to bright red in other varieties. Hardness 5-6. Cleavage none. Streak red-brown. Red sedimentary rocks*, ancient iron-rich sedimentary rocks, soil, zones of weathering, veins. Iron ore and red pigment in paints. Mafic Minerals (Na, Ca, Mg, Fe, Al Silicates) Luster nonmetallic. Color dark ...

Chromium is a hard, steel-gray, lustrous metal that can take a high polish. ... Cobalt is a hard, magnetic, somewhat brittle metal resembling iron and nickel with regard to its physical properties, including magnetism. ... The metal is very hard and brittle and is extremely dense. Osmium is credited as being the most dense metal but they are so ...

The Crossword Dictionary explains the answers for the crossword clue 'Hard grey metal used in special steels and magnetic alloys (9)'. If more than one Crossword Definition …

COPPER. a copper penny. a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor. a reddish-brown color resembling the color of polished copper. any of various small butterflies of …

osmium (Os), chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table and the densest naturally occurring element. A gray-white metal, osmium is very hard, brittle, and difficult to work, even at high temperatures. Of the platinum metals, it has the highest melting point, so fusing and ...

Low carbon ferrochromium contains between 60-72% chromium, less than 1% carbon, and the remainder iron. High carbon grades range from 52-72% chromium, 4-10% carbon, and the balance iron. This hard, brittle material appears metallic gray in color. Uses: Stainless steels, alloy steels, tool steel, and cast iron. US imports: 243,000 mt (2021)

The 10 Heaviest Metals. 10. Mercury 200.59 u. Mercury is very heavy, along with its high density. It is used as a primary explosive and used in the cartridges of firearms. The weight comes into play mostly when mercury is in its liquid state because many things can float on top of it.

Environment: Gabbro is formed by magma that cools very slowly into hard rock below or within the Earth's crust. Distinguishing Characteristics: dark grey-black, shiny surfaces of feldspar are visible. Origin of your Samples: Tweed, Ontario Uses: Gabbro is too fragile to use in construction. Often chromium, nickel and platinum occur in ...

Bismuth is a rather brittle metal with a somewhat pinkish, silvery metallic lustre. Bismuth is the most diamagnetic of all metals (i.e., it exhibits the greatest opposition to being magnetized). It is hard and coarsely crystalline. It undergoes a 3.3 percent expansion when it solidifies from the molten state.

Thin splinters fusible in a candle flame, giving a brittle magnetic globule. 3 to 3½: Brass-yellow: Black, sometimes with a greenish tinge : MILLERITE NiS: Trigonal: Usually in radiating groups or mats of needle-like to hair-like crystals: 5.5: Slender crystals usually have a greenish tinge: 3 to 3½: Steel-grey: Steel-grey: One indistinct ...

Lead is the poorest conductor of heat. Bismuth, mercury and iron are also poor conductors Density: Metals have high density and are very heavy. Iridium and osmium have the …

Characteristics of Cobalt. Silver-colored cobalt metal is brittle, has a high melting point and is valued for its wear resistance and ability to retain its strength at high temperatures. It is one of the three naturally occurring magnetic metals ( iron and nickel being the other two) and retains its magnetism at a higher temperature (2012°F ...

A gray-white metal, osmium is very hard, brittle, and difficult to work, even at high temperatures. Of the platinum metals, it has the highest melting point, so fusing …

If a magnet will stick to your rock or a magnet will pull the rock when it is hung from a string that may mean there is iron metal in the suspect rock. You will want to grind a little spot as discussed above and see if there is metal. But many rocks on the Earth that are not meteorites contain iron in chemical forms that are magnet responsive.

In terms of hardness, Titanium is not harder than a diamond either. Titanium strength is .434 GPa, or giga pascals. Diamond strength is around 60 GPa. As for the hardness scale, titanium is 36 Rockwell C, while diamond is 98.07 Rockwell C. Although titanium has gained a reputation of being an extremely strong material, most steels are stronger.

Occurrence, properties, and uses. Beryllium is a steel-gray metal that is quite brittle at room temperature, and its chemical properties somewhat resemble those of aluminum.It does not occur free in nature. Beryllium is found in beryl and emerald, minerals that were known to the ancient Egyptians.Although it had long been suspected that the …

Magnetite (or lodestone) is a common accessory mineral in coarse-grained igneous rocks and metamorphic rocks. It may be gray-black or have a rusty coating. Crystals are common, with striated faces shaped …

Manganese is a hard, gray-white metal, which is very brittle, and fairly reactive. It is named for the Latin word for "magnet," magnes, since it can be made to be ferromagnetic with the right treatment. It is found in the Earth's crust at a concentration of 1000 ppm, making it the 12th most abundant element.

The meteorite may be black in color but with slight variations (e.g., steely bluish black). However, if the rock you've found isn't at all …

a strong, hard magnetic silvery-gray metal, the chemical element of atomic number 26, much used as a material for construction and manufacturing, especially in the form of …

Tungsten This silver-gray metal is a favorite among men. Tungsten carbide, a compound of tungsten and carbon, is used to make jewelry. It is a very hard metal and can be scratched only by diamond. An advantage of tungsten jewelry is that it is hypoallergenic. But, there are limited jewelry options in tungsten, restricting its popularity.

A very hard, brittle, silvery-white transition metal of the platinum group, iridium is the second-densest metal (after osmium) with a density of 22.56 g/cm3 as …

Metals, Non Metals, Metalloids quiz for 6th grade students. Find other quizzes for Chemistry and more on Quizizz for free! ... It's very brittle. 25. Multiple-choice. 5 seconds. 1 pt. ... Iron is a good conductor, malleable and magnetic. What type of element is Iron? Metal. Nonmetal. Metalloid. 32. Multiple-choice. 30 seconds. 1 pt.

Answers for Brittle metal crossword clue, 4 letters. Search for crossword clues found in the Daily Celebrity, NY Times, Daily Mirror, Telegraph and major publications. ... A very hard, brittle, bluish-white metal, the densest naturally occurring element (6) ... ARSENIC: Brittle grey-green semi-metal, atomic number 33 (7) CRISPS: Becomes brittle ...

Chromium is a steely-gray, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.. ... brittle metallic element. It has magnetic properties like iron. Cobalt-nickel alloys have good temperature stability and corrosion and wear resistance and are used in high temperature applications ...

All solutions for "A HARD BRITTLE GREY POLYVALENT METALLIC ELEMENT THAT RESEMBLES IRON BUT IS NOT MAGNETIC" 74 letters crossword answer - We have 1 …

A steel-grey metal with a reddish tinge which is strongly magnetic. It is normally used as an alloying addition. ... A hard grey semi-metal, or metalloid, ... An extremely hard bluish-white brittle metal which is very difficult to fabricate. 100 $/g Iridium Element (Ir), Atomic No. 77, density 22.6 kg/litre, M.Pt 2446°C ...

Gray Color. HARD TO SCRATCH Steel-gray; powder, dull red; sometimes micaceous, then seems soft. ... lead-gray; brittle; cubic cleavage, very perfect. ... very perfect; sometimes slightly magnetic; very heavy; color usually brown-black; luster, near-metallic. Wolframite. EASY TO SCRATCH (a) Makes Clean Mark on Paper Gray mark; …

metal atoms lose electrons to non metallic atoms and become positively charged metal ions. anions. non metal atoms gain electrons from metal atoms and became negatively charged non metal ions. what forces result from the attraction between positive and negative charges. electrostatic. explain high melting points of ionic compounds.