منزل 
مشروع
· As human beings, we eat, drink and breathe chemicals every day. That doesn't mean, however, that some chemicals aren't insanely dangerous. This article lists the most dangerous chemicals known to mankind, including some that are explosive, corrosive, poisonous and carcinogenic.
2. EXTRACTION of ALUMINIUM and its uses (A) What is the main ore of aluminium called?What is the name and formula of the principal aluminium compound in it? (B) Aluminium is extracted from its ore by does this mean? (C) Sketch in outline the electrolysis cell, add labels to show: bauxite input, carbon anodes (+), electricity supply, aluminium output, carbon hode (), waste ...
What is Sulfuric Acid? The Sulfuric acid is one of the quite important minerals having a wider range of industrial appliions too. The chemical formula for the acid is given as H2SO4 with a molecular weight g/mol approximately. The sulphur atoms are bounded with two oxygen atoms with double bonds and two hydroxyl group (OH) [.]
4. CHEMICAL AND PHYSICAL INFORMATION CHEMICAL IDENTITY Asbestos is a generic term for a group of six naturallyoccurring, fibrous silie minerals that have been widely used in commercial products. Asbestos minerals fall into two groups or classes, serpentine asbestos and .
List of Chemical compounds their common name, formula and uses The given below table consists of the common names of important chemical compounds, their chemical formula and uses. The list has been prepared after a thorough analysis of previous year papers in which questions related to .
· (1) The chemical formula for Ammonium sulfite. The given compound ammonium sulfate is an ionic compound. It is made up of two different ions which are ammonium ion and sulfite ion by the crisscross method. Thus, the correct chemical formula for ammonium sulfite is . (2) The chemical formula for Iron(III) phosphate.
IRON OXIDE, [SPENT] is iron oxide that has been converted to iron sulfide. A reducing agent. Can be regenerated to iron oxide by exposure to the air. Lliable to spontaneous heating.
1. What is a chemical change? 2. List three types of chemical changes. Answers 1. A chemical change produces different materials than the ones we started with. 2. a. two elements form a compound b. a compound is broken down into its elements c. one compound is transformed into another compound Chemical Symbols and Formulas Practice Questions
The chemical formula is Na 8 Al 6 Si 6 O 24 Cl 2. Tanzanite is a variety of Zoisite. It is valued as a gem stone and has the chemical formula Ca 2 Al 3 Si 3 O 12 (OH). Topaz is a silie mineral that can be many different colors. The fact that it will take a high polish and is very hard makes it popular in jewelry. The chemical formula is Al 2 ...
· Mining chemicals represent a niche area of supply but at the same time their use is almost universal across the industry. In this month's Spotlight Feature Article, from the June issue of International Mining magazine, Editor Paul Moore looks at the players, challenges, and future horizons for the sector.
Chemical Formula. Baking soda or baking powder has various chemical names like sodium bicarbonate (Na 2 CO 3), bicarbonate of soda, sodium hydrogen carbonate ( NaHCO 3), etc. It is also called sodium bicarb or simply bicarb. Its main chemical formula is NaHCO 3, and it's prepared industrially by Solvay process.
· IMPORTANT QUESTIONS 1 MARK QUESTIONS Question. 1. Name the scientist who laid the foundation of chemical sciences. How ? Answer. Antoine Laurent Lavoisier, by establishing two important laws of chemical combination. Question. 2. Define law of conservation of mass. Answer. It states that, 'Mass is neither created nor destroyed in a chemical reaction.'
Names, Symbols, and Oxidation Numbers of Common Elements and Polyatomic Ions ... (Table 1), it is not difficult to write the formula of a chemical compound. There is one important rule that must be remembered: The total oxidation number of the first, or positive, ...
THE MINERAL TANTALITE. Chemical Formula: (Fe, Mn) (Ta, Nb) 2 O 6, Iron Manganese Tantalum Niobium Oxide. Uses: An ore of tantalum and niobium and as mineral specimens. Tantalite is the most widespread tantalum mineral and makes for an important ore of the industrially useful metal. Tantalum is used in alloys for strength and higher melting ...
The name is derived from the AngloSaxon language, while the chemical symbol "Au" is derived from the Latin name for the metal, aurum ("shining dawn"). It is often found as the free element as nuggets or grains, and in alluvial deposits, and is associated with some sulfide ores, and is also found in the mineral sylvanite [silver gold telluride, (Ag,Au)Te 2 ].
· Answer: The chemical compound present in zinc blende is zinc sulphide (sulphide ore) and its chemical formula is ZnS. Quaternary ammonium salts. Quaternary ammonium salts, particularly those containing 12–18 carbon atoms chains, have been widely used as antimicrobial agents in manufacturing antimicrobial textiles [41,42].
B. Mineral Formula Calculations we will review the calculation of weight percent of elements in minerals and the determ ination of the chemical formula of a mineralalso, we will determine the samefor the element oxide composition of a mineral which is quite different than what you did
The name of a base is the name of the ion followed by the name of the anion (hydroxide). The formula of a base is written by showing the number of hydroxide ions needed to balance the positive charge on the ion. After reading Lesson, answer the following questions. Names and Formulas of Acids hydrogen1.
· Some elements were known in ancient times and therefore carry over their Latin names. Periodic Table. 2019. Photo by N. Hanacek. National Institute of Standards and Technology (NIST). There are eleven elements represented in the periodic table by letters not in line with their names:Sodium (Na – Natrium)Potassium (K – Kalium)Iron (Fe – Ferrum)Copper (Cu hellip; Continue reading .
24 ساعة