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What is the pH level of milk?

The pH scale indicates the acidity or alkalinity of a substance. A pH of 7 is neutral. Anything below that is acidic. As the pH number becomes smaller, the acidity increases. Vinegar's pH level is 3, so it is 30 times more acidic than milk with a pH level of 6. A pH level above 7 indicates an alkalide or base. The higher the number, the more alkaline the liquid. For instance, milk of magnesia registers at pH 10. This property makes it effective at relieving acid indigestion.

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How do you bend a steel rod?

There is no one kind of steel. As stated by SteelConstruction.info, steel is rated by five different categories. The first is strength, or the ability for the steel to keep its shape. The second is toughness, or the ability of the steel to bend rather than break or shatter when it is put under stress. The third is ductility, or the ability of the steel to be pushed together or pulled apart without cracking or failing. The fourth and fifth qualities, weldability and durability, do not impact how steel bends.\nA steel rod with low strength and high toughness bends quite readily. A steel rod with..

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How does the moon affect the Earth?

The tidal effect of the moon only significantly affects the largest bodies of water, such as the major oceans. The gravity of the moon pulls the water in the oceans toward it. As the Earth rotates, the bulge shifts through the different regions of the globe. Tides appear on both sides of the Earth because of the pull of the sun.\nThe moon is an important buffer between the Earth and extraterrestrial bodies, which was more important during the initial formation when the Earth and moon were closer together. However, the moon is gradually shifting away from the Earth, so its protection is much le..

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Why do trees lose their leaves in autumn?

The leaves of a tree provide it with nutrients from sunlight. In the winter on a warm day, the leaves may try to continue the process of providing nutrients, called photosynthesis. Because the process requires water, if the weather gets cold again, the leaves are frozen on the branches, causing them to die. Therefore, the trees would be stuck with dead leaves in the spring, which would lead to the tree's death. Instead, trees become dormant in the winter by pushing off their leaves. They grow a new set in the spring. In tropical climates, trees shed their leaves during the dry season for ..

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How long does it take for Styrofoam to decompose?

Styrofoam does not decompose because the polymer beads that comprise it are resistant to photolysis. It is harmful to the environment because it requires hydroflourocarbons that negatively impact the ozone layer and because it uses up limited stores of petroleum. During the manufacturing process, Styrofoam releases chemicals that can cause headache, depression, weakness, fatigue and adverse kidney effects.

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What is a pH level?

The pH scale is logarithmic, which means each whole number on the scale is ten times removed from the numbers on either side of it. Pure water is an example of a neutral substance, one that is a 7 on the pH scale. Coffee, fruit juices and milk are all acidic substances, while ammonia, baking soda and sea water are all bases.

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What is the chemical make-up of the sun?

The amount of hydrogen and helium in the sun makes sense, as the primary energy source of the sun is a thermonuclear reaction, in which hydrogen atoms are fused together to form helium atoms. By studying the ratio of hydrogen present in the sun to the amount of helium present, scientists can understand the history of the star. The sun is approximately 4.5 billion years old, and it has enough hydrogen to keep burning for about five billion more years.\nScientists investigate the composition of the sun and other stars by studying its spectral emissions. Because elements produce light at differen..

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What is formed when a metal reacts with water?

According to a page on the Towson University website, when a metal reacts with water, the metal combines with oxygen and hydrogen to form a strong base. The oxygen and hydrogen are combined chemically to form a hydroxide, which acts as a single entity. The metal has few valence electrons, so it tends to act as an electron donor; the hydroxide is an electron acceptor. The alkali metals such as sodium, potassium and cesium are so reactive that their reactions with water may cause explosions.

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How far away is the Proxima Centauri star from Earth?

First discovered in 1915 by Robert Innes, Proxima Centauri is considerably smaller than the sun, with only a little more than a 10th the mass and diameter. Proxima Centauri has a low luminosity and is not visible without the aid of instruments. The star is quite close to its neighbors, and their respective orbits leave a distance of only one-fifth of a light year between them.

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How do you prepare an oil and water emulsion?

Combine oil and waterPut equal parts oil and water in a bowl. The two ingredients stay separated because water molecules are polar, but oil molecules are not polar. The water binds with other water molecules, while the oil binds with oil molecules.\nMix the oil and water togetherStir the two ingredients vigorously with a cooking whisk until the oil and water begin to mix together. This mixture is unstable, so do not let the ingredients sit in the bowl undisturbed for more than a few seconds.Separate the eggIn a separate bowl, crack open one egg, and separate the yolk from the egg white. If the..

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