States of Matter

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The melting point of glass varies greatly according to what type of glass is being melted, but typically ranges from 2,597 to 2,912 degrees Fahrenheit. The variance in melting temperatures is caused by the mix of materials used initially to create the glass.

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  • How Does Gas Become a Liquid?

    Q: How Does Gas Become a Liquid?

    A: The process of a gas changing to a liquid is called condensation, and for condensation to take place, the environment has to reach maximum vapor pressure, generally through a lowering of temperature in the case of the water cycle. Because pressure varies inversely with temperature, as temperature decreases, pressure goes up, causing the gas molecules to move with progressively less kinetic energy. Eventually, liquid vapor and droplets form, and the gas begins to condense.
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  • What Is the Melting Point of Mild Steel?

    Q: What Is the Melting Point of Mild Steel?

    A: The melting point of mild steel, or low carbon steel, is usually 2,600 degrees Fahrenheit, or 1,427 degrees Celsius. Mild steel is one of the most commonly used types of industrial steel, and it consists of an alloy of steel and carbon.
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  • At What Celsius Temperature Does Water Freeze?

    Q: At What Celsius Temperature Does Water Freeze?

    A: Water freezes at zero degrees Celsius under normal conditions. The freezing point is the temperature at which a liquid becomes a solid, according to About.com. The Celsius scale is the official temperature scale for most of the world, although the United States still uses the Fahrenheit scale.
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  • Can You Put Glass in the Freezer?

    Q: Can You Put Glass in the Freezer?

    A: Glass can be used to store things in the freezer. Glass containers can also be put in the freezer temporarily, to make a drink extra cold.
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  • At What Temperature Does Ice Melt?

    Q: At What Temperature Does Ice Melt?

    A: Ice begins to melt when its surroundings rise above its freezing point, that being 32 degrees Fahrenheit (0 degrees Celsius). Depending on the salt content and the presence of other substances, that freezing point may be an even lower temperature.
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  • Does Vinegar Freeze?

    Q: Does Vinegar Freeze?

    A: Vinegar does freeze. The temperature at which vinegar freezes depends on the amount of acetic acid present. Common commercially-produced vinegar has a 5 percent acetic acid content and freezes at approximately 28 degrees Fahrenheit.
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  • Is the Melting of Ice a Physical Change?

    Q: Is the Melting of Ice a Physical Change?

    A: The melting of ice is a physical change. A physical change involves states of matter and energy. The melting of ice is a phase change, which is a type of physical change.
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  • How Much Does Water Expand When It Freezes?

    Q: How Much Does Water Expand When It Freezes?

    A: Water expands by a factor of 112, or roughly 9 percent, when it freezes. Water, unlike most other liquids, forms stronger hydrogen bonds as temperatures drop. This leads to a crystal lattice structure with voids left between molecules. As the molecules arrange themselves in this manner, the substance expands and becomes less dense.
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  • In What Two Ways Is Heat Involved in Chemical Change?

    Q: In What Two Ways Is Heat Involved in Chemical Change?

    A: Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place. Both of these two mechanisms of chemical change involve the heat characteristics of the involved substance or substances and the environment in which the chemical change is taking place.
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  • What Is the Melting Point of Rubber?

    Q: What Is the Melting Point of Rubber?

    A: Rubber begins to melt at approximately 180 degrees Celsius. At low temperatures, around 5 C to 6 C, there is a risk that rubber hardens because of crystallization. The optimum temperature for rubber is 20 C.
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  • What Happens in a Condensation Reaction?

    Q: What Happens in a Condensation Reaction?

    A: In a condensation reaction, two reactants react to form water or ammonia and one other byproduct. As long as either water or ammonia is formed and is the only byproduct, a reaction is considered a condensation reaction. A condensation reaction is not to be confused with the process called condensation, where water vapor turns to liquid after losing heat.
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  • What Is the Density of Oil?

    Q: What Is the Density of Oil?

    A: The density of oil depends on the type of oil and varies between 0.8 to 0.96 grams per centimeter cubed. Fuel oil is commonly used in engines and industrial furnaces. It is also called heating oil and has a density of 0.81 grams per centimeter cubed.
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  • What Is the Difference Between Steam and Water Vapor?

    Q: What Is the Difference Between Steam and Water Vapor?

    A: The difference between steam and water vapor is that water vapor is typically the same temperature as the air that is present while steam is above the boiling point of water. The chemical composition of water and steam are identical.
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  • Which Gas Is Used in Light Bulbs?

    Q: Which Gas Is Used in Light Bulbs?

    A: Argon is a commonly used gas used to fill incandescent light bulbs. It increases bulb life by preventing the tungsten filaments from deteriorating too quickly. Other gases such as helium, neon, nitrogen and krypton are also used in lighting.
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  • What Is It Called When a Gas Turns Into a Liquid?

    Q: What Is It Called When a Gas Turns Into a Liquid?

    A: Condensation is the name of the process through which gas turns into a liquid. Three common states of matter exist: solids, liquids and gases. Matter, however, can change its state with the addition or subtraction of energy. The energy is usually in the form of heat.
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  • What Is the Fifth State of Matter?

    Q: What Is the Fifth State of Matter?

    A: The fifth state of matter is Bose-Einstein condensation, which is a gaseous superfluid formed by atoms that have been cooled to almost absolute zero. The theory was proposed by Satyndra Bose and Albert Einstein in the 1920s.
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  • How Does Matter Change From One State to Another?

    Q: How Does Matter Change From One State to Another?

    A: An element's state changes depending on its temperature and the pressure exerted on it. Heating or cooling an element can cause it to change states. Adding or removing pressure can do so as well.
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  • At What Temperature Does Wood Catch Fire?

    Q: At What Temperature Does Wood Catch Fire?

    A: Dry wood catches fire between about 300 degrees Fahrenheit and 580 degrees Fahrenheit, depending upon the species of wood and the extent of decay present, with more decayed wood being quicker to ignite. The amount of moisture in the wood is the strongest influence on wood reaching this temperature.
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  • How Long Does It Take to Freeze a Gallon of Water?

    Q: How Long Does It Take to Freeze a Gallon of Water?

    A: The time it takes to freeze a gallon of water varies from minutes to several hours. The time it takes is based on several factors including temperature and the pureness of the water.
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  • How Does Temperature Affect the Rate of Evaporation?

    Q: How Does Temperature Affect the Rate of Evaporation?

    A: Increased temperatures accelerate the rate of evaporation, while decreased temperatures slow down the process. First of all, heating of the liquid energizes the molecules, allowing them to escape and move into the air. Second, heat in the nearby atmosphere increases evaporation because warmer air is able to hold more water vapor.
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  • How Hot Is Fire?

    Q: How Hot Is Fire?

    A: Wood fires usually burn at a temperature of around 1,950 degrees Celsius. The exact temperature of the flame is dependent on external conditions such as the type of fuel being burned, available ventilation and the form of oxygen available for combustion.
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