Solutions & Mixtures

A:

The solubility of sucrose in water at 20 degrees Celsius (60 degrees Fahrenheit) is 204 g sucrose/100 g water. Solubility varies with the temperature of the solution. As the temperature of the water rises, more sucrose can be dissolved.

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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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  • Is bleach flammable?

    Q: Is bleach flammable?

    A: Bleach, which is essentially chlorine dissolved in water, is not a flammable substance on its own. If mixed with certain materials such as ammonia or acetylene, it can become unstable, forming explosive compounds or reactions.
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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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  • Does oil conduct electricity?

    Q: Does oil conduct electricity?

    A: Oils conduct electricity minimally under normal conditions, which makes them useful as insulators. The extent of electrical conductivity depends on the concentration of impurities. The presence of salts and other substances generally increases the electrical conductivity of oil.
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  • How do you neutralize caustic soda?

    Q: How do you neutralize caustic soda?

    A: Caustic soda is an inorganic compound that is a metallic base neutralized by acidic substances. The chemical name for caustic soda is sodium hydroxide, and it has the chemical formula NaOH. It is also known as lye.
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  • What is the difference between a mixture and a compound?

    Q: What is the difference between a mixture and a compound?

    A: A mixture is formed when two or more substances are physically mixed together. A compound is formed when two or more substances are chemically combined through a chemical reaction. The components of a mixture can be separated with relative ease, whereas the components of a compound are almost impossible to separate without a chemical reaction.
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  • What is another name for a homogeneous mixture?

    Q: What is another name for a homogeneous mixture?

    A: Another name for a homogeneous mixture is a solution. The term "solution" is more frequently used when a homogeneous mixture is a liquid, although it is sometimes used if the homogeneous mixture is a gas. Another name for a solid homogeneous mixture of metals is an alloy.
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  • How does hydrogen peroxide kill bacteria?

    Q: How does hydrogen peroxide kill bacteria?

    A: Hydrogen peroxide kills bacteria by oxidizing their cell walls, stealing electrons from them and disrupting their chemical structures. Hydrogen peroxide is a compound with two hydrogen atoms and two oxygen atoms. It is very similar to water, but it has an extra oxygen atom that is shed readily to react with its environment, often in ways that are destructive to surrounding organisms.
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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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  • 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 does "solute" mean in science?

    Q: What does "solute" mean in science?

    A: A solute is the smaller part of a solution, which in many cases is said to have been dissolved by the solvent. A solution is any mixture that is homogeneous at a molecular level, which means that any given volume of the solution has about the same proportion of type of molecule in the overall solution as the overall solution.
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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 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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  • 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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  • What are examples of concentrated solutions?

    Q: What are examples of concentrated solutions?

    A: Common commercial examples of concentrated solutions are hydrochloric acid and sulfuric acid. Hand soap, soft drinks and liquid medicine are concentrated solutions commonly found in the household.
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  • What are examples of insoluble substances?

    Q: What are examples of insoluble substances?

    A: Examples of insoluble substances are sand, plastic, wood, metal, glass and cloth. These substances never dissolve in water or any other solvent at room temperature and pressure. Sugars and inorganic salts are also examples of insoluble substances. Insoluble substances cannot be extracted from a solution.
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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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  • What happens when you mix vinegar and baking soda?

    Q: What happens when you mix vinegar and baking soda?

    A: According to Steve Spangler Science, mixing vinegar and baking soda starts a chemical reaction that produces carbon dioxide, or CO2, and water. The chemical names of the two ingredients are acetic acid, which is the vinegar, and sodium bicarbonate, which is the baking soda.
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  • What is the chemical formula of kerosene?

    Q: What is the chemical formula of kerosene?

    A: Kerosene is a mixture of hydrocarbons and does not have a single chemical formula. The hydrocarbons in the mixture include compounds with 10 to 16 carbon atoms in both straight chain and branched formations.
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  • What are bricks made of?

    Q: What are bricks made of?

    A: Bricks are made with the two most abundant materials on Earth: clay and shale. These two materials are then put in a furnace, called a kiln, and heated to 2,000°F (approximately 1,100°C). By a chemical process (vitrification), the materials fuse together and form bricks.
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  • What happens when you mix bleach and ammonia?

    Q: What happens when you mix bleach and ammonia?

    A: Mixing bleach and ammonia produces toxic gases called chloramines that can damage the upper respiratory tract and irritate the eyes, throat and nose. Symptoms include coughing, shortness of breath, watery eyes and nausea. Prolonged exposure to chloramines in an enclosed space can cause death, particularly if a person has any pre-existing respiratory conditions.
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