Chemistry

A:

Iron has a melting point of 1535.0 degrees Celsius or 2795.0 degrees Fahrenheit. It has a boiling point of 2750.0 degrees Celsius or 4982.0 degrees Fahrenheit.

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  • What are some uses of hydrogen?

    Q: What are some uses of hydrogen?

    A: Hydrogen is used to manufacture the important chemical compounds ammonia and methanol, according to the Essential Chemical Industry. It is also used in such oil refinery processes as reforming, in which sulfur compounds are removed from petroleum to improve the petroleum's quality.
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  • What is the difference between salt and sugar crystals?

    Q: What is the difference between salt and sugar crystals?

    A: Sugar and salt crystals are made of entirely different elements and have very different chemical and physical properties. While both dissolve readily in water, they dissolve in different ways, and unlike sugar, the dissolution of salt is largely unaffected by temperature. Their greatest similarities are in their common appearance as small white crystals and their use in the preparation and flavoring of food.
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  • What is washing powder made of?

    Q: What is washing powder made of?

    A: Washing powder is soap in a powdered form that is mixed with alkaline builders. Manufacturers have developed new and advanced laundry detergents over the years. The primary laundry detergents on the market are available in liquid and powder form. Both contain the same ingredients, except for the type of filler used. Liquid and powder detergents offer a similar cleaning action and the choice depends on personal preference.
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  • What is boiling point elevation?

    Q: What is boiling point elevation?

    A: The term boiling point elevation refers to solutions having higher boiling points than pure solvents. Boiling point elevation is a colligative property of a solution.
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  • What happens when iron reacts with vinegar?

    Q: What happens when iron reacts with vinegar?

    A: When iron reacts with vinegar, the metal rusts and causes an exothermic chemical reaction, which produces heat. This is commonly reproduced in experiments with either an iron nail or steel wool and vinegar.
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  • How does magnesium react with oxygen?

    Q: How does magnesium react with oxygen?

    A: Magnesium has a very energetic combustion reaction with oxygen, where two atoms of magnesium bond with one molecule of oxygen gas to form two molecules of magnesium oxide. This reaction is extremely exothermic, releasing a great deal of heat and light, which is why magnesium fuses are used to initiate reactions such as the thermite reaction, and magnesium is used in flares for high visibility. The reaction of magnesium to oxygen is so energetically favorable that burning magnesium can steal the oxygen from both water and carbon dioxide, making these common methods of dousing flames ineffective to stop magnesium combustion.
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  • What is geochemistry?

    Q: What is geochemistry?

    A: Frank Wigglesworth Clarke, who has been labelled as the "Father of Geochemistry," defines geochemistry as all geographical study that involves chemical change. Victor Goldschmidt, known as a pioneer of modern geochemistry, defines geochemistry as the study of the amount and the distribution of the chemical elements in the atmosphere, rocks, soils, minerals and water.
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  • How long does it take to freeze water into ice cubes?

    Q: How long does it take to freeze water into ice cubes?

    A: How long it takes water to become ice depends on the temperature of the water, how much water you have and how cold the freezing environment is. For water to freeze, it must reach 32 degrees Fahrenheit.
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  • How did lithium get its name?

    Q: How did lithium get its name?

    A: The word "lithium" is derived from the Greek word for stone, "lithos", because it was first discovered in stone. Lithium is one of several alkali metals discovered and named in the early 1800s. The other two, sodium and potassium were also named after the materials that were being studied when they were discovered.
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  • How does solar energy work?

    Q: How does solar energy work?

    A: Solar energy emerges when light energy from the sun strikes a silicon solar panel to produce an electrical current. The silicon in the solar panels can transform light energy into electricity because the movement of electrons in the silicon crystal generates electrical energy.
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  • Is methane gas harmful to humans?

    Q: Is methane gas harmful to humans?

    A: Methane gas is not considered dangerous to humans by inhalation. Exposure to methane gas in air with low oxygen levels may cause dizziness, headaches and a feeling of fatigue with no lethal effects.
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  • What is the use of chloroxylenol in Dettol antiseptic liquid?

    Q: What is the use of chloroxylenol in Dettol antiseptic liquid?

    A: The chloroxylenol in Dettol is an antimicrobial disinfectant used to kill bacteria and to prevent infections on minor scrapes, cuts or burns. The substance is commonly found in antibacterial soaps, but it is also used to control bacteria, algae and fungi on industrial surfaces where clean facilities are needed. Some liquids that contain chloroxylenol must be diluted before application on the human body.
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  • Where is nitrogen found throughout nature?

    Q: Where is nitrogen found throughout nature?

    A: Nitrogen can be found in all living organisms on Earth while also being present in soil, water and air. It is an important component in biological compounds found all throughout nature.
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  • What family does iron belong to?

    Q: What family does iron belong to?

    A: Iron belongs to the family of transition metals. Like main group metals, transition metals are hard, conduct both heat and electricity and are malleable. One of the few differences is that transition metals are more electronegative.
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  • What are the most conductive metals?

    Q: What are the most conductive metals?

    A: The list of most conductive metals includes silver, copper and gold. The conductivity standard of metal is based on silver, which is the most conductive of all metals.
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  • What is the specific heat of brass?

    Q: What is the specific heat of brass?

    A: The specific heat of brass at 25 degrees Celsius is 0.380 joules per gram per degree Celsius. This is much lower than water's specific heat of 4.186 joules per gram per degree Celsius.
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  • What happens when iron reacts with oxygen?

    Q: What happens when iron reacts with oxygen?

    A: Iron rusts when it comes in contact with oxygen and water. It rusts faster in acid rain and salty water. Both oxygen and water are necessary for rusting, which is an oxidation reaction.
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  • How are colloids classified?

    Q: How are colloids classified?

    A: Colloids are generally classified into four types: emulsion, sol, aerosol and foam. The combination of fog and smoke makes up an aerosol, which is comprised of solid particles or liquid droplets dispersed throughout a gas phase. Mayonnaise is an emulsion, which are two liquids dispersed together.
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  • What gas makes your voice deep?

    Q: What gas makes your voice deep?

    A: Any gas that is heavier than air, such as xenon or sulphur hexaflouride, makes the human voice sound deep. The reason why helium gas makes voices sound high is that it is lighter than air and because sound travels faster through it than in air.
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  • How does pH affect protein shape?

    Q: How does pH affect protein shape?

    A: Changing the pH level can change the shape of a protein. This process is called "denaturing" the protein. When a protein becomes denatured, it does not function optimally or it does not function at all.
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  • What is anomalous expansion of water?

    Q: What is anomalous expansion of water?

    A: The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4oC to 0oC, and it becomes less dense. The density becomes less and less as it freezes because molecules of water normally form open crystal structures when in solid form.
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