Naturally occurring chromite is composed of small amounts of titanium, zinc, cobalt, nickel, and manganese. Due to this, chromite is responsible for a multitude of industrial contributions to society. When chromium is extracted from chromite, it produces a metal alloy known as stainless steel. Since chromite has high heat stability, it is often used as a refractory material. Also, the resistance to high temperatures and pressures allow it to go through the metamorphic processes unscathed.
This energy is indestructible and is converted to light and heat. c. If you accidentally spill sodium chloride into a stove while cooking, it does not melt It is an ionic compound and the forces attract between the positive and negative ions, I ionic compounds they have a strong ionic bond and it takes a lot of energy to break. A high can only melt the table salt. 6) a. Which pairs will react from an ionic compound?
Carbon dioxide fire extinguishers expel a cold fog of CO2 that cuts a fire off from its air supply. Dry chemical extinguishers spray a fine power that coats fuel and cuts it off from air. Foam is applied to blanket large pools of burning liquid to cut off air. You've seen foam being applied to limit or extinguish fires involving burning fuel in films and on TV, haven't you? Sure.
Power plants are the main resource for the burning of coal and oil. When they are burned it releases a substance called sulfur dioxide and can affect the environment including our live stock, plants, animals, the air that we breathe and our water sources. Recycling becomes more important on large scales. Used consumer goods are collected, converted back into raw materials and are remade into new consumer products. Examples of materials commonly recycled are, office paper, steel from old buildings, plastic containers and aluminum cans.
The DNA strands are held together by hydrogen bonds. When you use heat to break the nuclear membrane, the heat can also break the hydrogen bonds. So you add the cold ethanol to keep the DNA strands together, and also DNA is non-soluble in ethanol, so it will precipitate out. (See "Extracting DNA from Strawberries Honors", provided by Ms.Morse, 2/21/12.) 2.
Dissolving is the process in which the molecules interact and attract each other to form a solution. So in this case the baking soda, salt, or the sugar beginning to attract with the vinegar then it starts to dissolve. An dissolving also depends on the molecules of the substances (salt, sugar, baking soda) doing the dissolving is called the solvent. An the molecules of the substances being dissolved (vinegar) are called the solute. The extent to which a substance dissolves is a characteristics property of the substance is called the solubility.
The orange in citrine is due to iron. When all varieties are combined, quartz makes up around 12% of the earth’s crust. Ametrine is a microcrystalline variety of quartz that occurs very rarely in nature. When amethyst is heated, it turns a shade of yellow. Therefore, most ametrine is simulated and not natural, it is just amethyst that has been heated to the point of changing color.
Steam Distillation: The isolation of limonene 1. Purpose The purpose of the experiment is to be familiar with the use of steam distillation, to learn how to extract an organic solvent and remove a volatile liquid by a rotary evaporator, and to determine the purity of the limonene. Steam distillation was used because it is a special type of distillation especially for temperature sensitive materials. Dichloromethane was used to extract the aqueous mixture. Magnesium sulfate was used to absorb water and simple filtration was used to remove magnesium sulfate.
The element used in atomic bombs is Uranium-235. Uranium's atoms are unusually large, and henceforth, it is hard for them to hold together firmly. This makes Uranium-235 an exceptional candidate for nuclear fission. Uranium is a heavy metal and has many more neutrons than protons. This does not enhance their capacity to split, but it does have an important bearing on their capacity to facilitate an explosion.
Introduction The element Chromium is very important in the industrial world. It is used in nonferrous alloys such as stainless steel, in order to increase its hardness and prevent corrosion and oxidation. Chromium is only found in one ore, the mineral Chromite. Chromite’s composition is iron magnesium oxide [(Fe, Mg) Cr2O4]. Occasionally, magnesium will substitute for iron, and aluminum and ferric ions will substitute for chromium.