States of Matter

A:

The time it takes for water to freeze in a typical freezer varies depending on a number of factors. The first factor to consider is the amount of water being frozen.

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  • What is the temperature of ice?

    Q: What is the temperature of ice?

    A: Chemists at the University of Utah discovered that ice forms at temperatures as low as minus 55 degrees Fahrenheit, according to a Science Daily article. Prior to this discovery, scientists believed ice formed exclusively at 32 degrees Fahrenheit.
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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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  • What happens when water freezes?

    Q: What happens when water freezes?

    A: When water freezes, the molecules slow down and assume a fixed position, although not quite in the way that one might think. Water is made of molecules with two hydrogen atoms and an oxygen atom, but those molecules don't just stop moving as units. One would think they would all stop, because the Third Law of Thermodynamics says that entropy drops with temperature, getting close to zero. However, ice does not show that property, which is one reason why ice is the only solid less dense than its liquid state.
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  • Why can gases be compressed?

    Q: Why can gases be compressed?

    A: Gases can be compressed because each gas particle has relatively vast amounts of room between it and all other gas particles the majority of the time. Thus, compression, which is essentially forcing the gas particles closer together, has a great deal of space to reduce. This contrasts with liquids and solids, which have particles in constant contact with one another, and thus little room to compress.
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  • What is the boiling point of sugar?

    Q: What is the boiling point of sugar?

    A: Sugar does not have an exact boiling point by itself as sugar does not melt or boil, but decomposes. There are boiling points when sugar is dissolved in water. However, those are not static numbers.
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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 melting point of glass?

    Q: What is the melting point of glass?

    A: 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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  • 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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  • What goes up and never comes down?

    Q: What goes up and never comes down?

    A: The most accurate answer to what goes up and never comes down is a person's age. Another common answer is a person's height. Heat and smoke are also accurate answers for what goes up and never comes down, due to the fact that heat rises.
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  • What are some examples of matter?

    Q: What are some examples of matter?

    A: All physical objects, such as stars, books, people, animals, plants and the sea, are examples of matter. Matter is any physical object that occupies space and has mass.
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  • Where does chalk come from?

    Q: Where does chalk come from?

    A: According to Discovering Fossils, chalk occurs naturally in nature as calcium carbonate, a form of limestone. Limestone is formed from the decomposition and sedimentation of Coccolithophores skeletons, a type of plankton.
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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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  • Can a solid turn into a gas?

    Q: Can a solid turn into a gas?

    A: A solid can turn directly into a gas through a process called sublimation. In this instance, the solid vaporizes without going through the intermediary liquid stage. For example, in the water cycle, this would involve snow or ice turning directly into water vapor without going through the melting process. The opposite process, in which vapor changes into ice, is known as deposition.
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  • How long does water take to freeze in a freezer?

    Q: How long does water take to freeze in a freezer?

    A: The time it takes for water to freeze in a typical freezer varies depending on a number of factors. The first factor to consider is the amount of water being frozen.
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  • Is aluminum a solid, liquid or gas?

    Q: Is aluminum a solid, liquid or gas?

    A: The physical state of aluminum is dependant on the temperature. This metal exists as a solid at temperatures below its melting point of 1220.58 degrees Fahrenheit, at which it becomes a liquid. At temperatures above 4566 Degrees Fahrenheit, aluminum becomes a gas.
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  • What happens when water vapor cools?

    Q: What happens when water vapor cools?

    A: When water vapor cools, it condenses. It is a phase change where water changes from a gas to a liquid. Condensation is the opposite of evaporation.
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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 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 are the characteristics of matter?

    Q: What are the characteristics of matter?

    A: All physical matter has mass, weight, volume and density. Matter also has certain characteristics restricted only to specific physical states. Physical matter is made up of atoms, minuscule particles that form physical structures via their electrically charged attraction to one another.
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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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  • 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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