Solutions & Mixtures

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Peeling paint can be due to any of three common causes, including lack of surface preparation, moist walls and wrong paint, according to Red Beacon. If the wall underneath is dirty, wet or covered in old paint, the paint on top of the bad layer may not hold properly. One way to fix peeling paint is to paint the wall correctly after scraping off the malfunctioning layers.

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  • How do you separate alcohol and water?

    Q: How do you separate alcohol and water?

    A: To separate alcohol from water, you must heat the solution, evaporate the ethanol into vapor, cool it down and condense it back into a liquid using a distillation apparatus. This process is called distillation, and it is used to separate a pure liquid from a liquid mixture. Distillation works for liquids that have different boiling points.
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  • What is a solution in scientific terms?

    Q: What is a solution in scientific terms?

    A: In scientific language, a solution is a mixture of at least two substances in which the particles of the substances are of atomic or molecular size. A solution is a homogeneous mixture, which means that all parts of the mixture are exactly the same as every other part.
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  • Why does paint peel off walls?

    Q: Why does paint peel off walls?

    A: Peeling paint can be due to any of three common causes, including lack of surface preparation, moist walls and wrong paint, according to Red Beacon. If the wall underneath is dirty, wet or covered in old paint, the paint on top of the bad layer may not hold properly. One way to fix peeling paint is to paint the wall correctly after scraping off the malfunctioning layers.
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  • Why are oil and water immiscible?

    Q: Why are oil and water immiscible?

    A: Water and oil do not mix because of their molecular properties. On one hand, water has a slight positive charge and is attracted to atoms and molecules with a negative charge. Oil is an electrically neutral substance and has no affinity for water. Water molecules also have high surface tension and are strongly attracted to each other. A surface-active intermediary is necessary for water and oil to mix.
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  • What type of mixture is silver nitrate in water?

    Q: What type of mixture is silver nitrate in water?

    A: Silver nitrate, or AgNO3, mixed with distilled water is a solution. A solution is a homogeneous mixture where one substance dissolves in another substance. Explained by ABetterChemText, the solute is broken down completely into individual ions or molecules. In water, AgNO3 disassociates into Ag+ ions and NO3- ions.
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  • What types of metals do magnets stick to?

    Q: What types of metals do magnets stick to?

    A: Magnets stick to any metal that contains iron, cobalt or nickel. Iron is found in steel, so steel attracts a magnet and sticks to it. Stainless steel, however, does not attract a magnet.
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  • Who invented salt?

    Q: Who invented salt?

    A: Salt is naturally found in the environment, and thus it was never invented. It is composed of nitrogen and chlorine, both of which are so volatile that they combine to form a new compound.
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  • How do you identify heterogeneous and homogeneous mixtures?

    Q: How do you identify heterogeneous and homogeneous mixtures?

    A: Heterogeneous and homogeneous mixtures are identified by the level at which the mixtures blend together. Visible indications of different components within a mixture denote a heterogeneous mixture, while a uniform, single-component appearance indicates a homogeneous mixture.
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  • Is helium gas used to fill a balloon a substance or a mixture?

    Q: Is helium gas used to fill a balloon a substance or a mixture?

    A: Most of the helium gas used to fill balloons is a mixture because commercial helium is seldom pure. Usually, it contains impurities in the form of nitrogen and oxygen gas. However, the helium present in this mixture is also a substance.
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  • What is the difference between a solution and a suspension?

    Q: What is the difference between a solution and a suspension?

    A: A solution is a mixture featuring solutes that have been dissolved, while a suspension is a mixture of liquids also containing solid particles that may not completely dissolve inside the liquid. Materials that dissolve in liquids are considered soluble. When no more solute dissolves in a particular solvent while temperature remains the same, the solution is considered to be saturated.
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  • What is the freezing point of gasoline?

    Q: What is the freezing point of gasoline?

    A: Gasoline may freeze at temperatures between negative 40 degrees Fahrenheitand negative 58 F. The exact freezing temperature depends on the properties of the individual constituents in gasoline.
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  • What are some examples of viscous liquids?

    Q: What are some examples of viscous liquids?

    A: Some examples of highly viscous liquids are oils, honey, glycerin, tar and sulfuric acid. Viscosity is the ability of substances, especially fluids, to resist flow. It can also be referred to as the measure of the ability of a liquid to resist being deformed by extensional stress.
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  • How do glow sticks work?

    Q: How do glow sticks work?

    A: According to Mental Floss, the luminescence inside glow sticks comes from a chemical reaction between two substances that releases energy as light. The exact chemical makeup of a glow stick can vary from manufacturer to manufacturer, but most use hydrogen peroxide and a chemical called a diphenyl oxalate ester. When the two liquids mix inside the glow stick, they produce a light colored by a phosphorescent dye.
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  • How does filtration work?

    Q: How does filtration work?

    A: Filtration is a method of separating solid impurities from liquid by allowing the liquid to pass through a filter, which usually consists in a porous material such as cotton wool, cloth, paper, glass wool or asbestos. The filter traps solid particles, and the size of its pores or holes determines which particles pass through. Water flows through the material at a low speed.
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  • What is a filtrate in chemistry?

    Q: What is a filtrate in chemistry?

    A: In chemistry, a filtrate is a liquid that has passed through the filtration process. In this process, liquid is strained. Bigger particles get stuck in the strainer, while smaller particles and liquid pass through, becoming filtrate.
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  • What is the meaning of evaporation?

    Q: What is the meaning of evaporation?

    A: Evaporation describes the process of a liquid changing to a gas. Usually, the surface parts of a pool of liquid vaporize into a vapor or gas first. Evaporation occurs in both cold and warm liquids.
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  • What is an example of a mixture?

    Q: What is an example of a mixture?

    A: Examples of mixtures include sand and sugar, alcohol and water, and flour and sugar. A mixture is a combination of two or more substances in which each substance retains its own chemical identity.
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  • What happens when you mix salt with water?

    Q: What happens when you mix salt with water?

    A: Mixing salt with water results in the salt dissolving in the water to produce a saline solution. The salt splits up into positively and negatively charged ions that exist independently in the solution.
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  • What is a dehydrating agent?

    Q: What is a dehydrating agent?

    A: A dehydrating agent is a substance that dries or removes water from a material. In chemical reactions where dehydration occurs, the reacting molecule loses a molecule of water. Sulfuric acid, concentrated phosphoric acid, hot aluminum oxide, and hot ceramic are common dehydrating agents in these types of chemical reactions.
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  • What is an acceptable range of TDS in drinking water?

    Q: What is an acceptable range of TDS in drinking water?

    A: The Environmental Protection Agency establishes a recommended range of TDS in drinking water at 500 parts per million or lower. The total dissolved solids represent the accumulated content of organic and inorganic substances contained in water.
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  • Does acrylic shrink?

    Q: Does acrylic shrink?

    A: Acrylic shrinks when treated in a washer and dryer under moderate to high heat. Acrylic is synthetic, composed primarily of plastic and prone to deforming and shrinking during laundering.
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