26 Jan

Educake Chemistry Answers (A Comprehensive Overview)

Educake Chemistry Answers

Educake Chemistry Answers.

Are two atoms of the same element identical?

Educake Chemistry Answers. No. Two atoms of the same chemical element are typically not identical. First of all, there is a range of possible states that the electrons of an atom can occupy. Two atoms of the same element can be different if their electrons are in different states.

Can water stay liquid below zero degrees Celsius?

Yes, water can stay liquid below zero degrees Celsius. There are a few ways in which this can happen.

First of all, the phase of a material (whether it is gas, liquid, or solid) depends strongly on both its temperature and pressure. For most liquids, applying pressure raises the temperature at which the liquid freezes to a solid. A solid is formed when the loose, meandering molecules of a liquid get slow enough and close enough to form stable bonds that pin them in place.

Educake Chemistry Answers. Can you light a diamond on fire?

Yes, diamonds can be burned. The most common form of burning in everyday life is carbon combustion. In carbon combustion, carbon atoms break their bonds with each other and with other atoms (which require energy) to form bonds with oxygen atoms (which release even more energy than first required).

The net extra energy released in this reaction can then go on to rip more carbon atoms free of their non-oxygen neighbors, thus continuing the reaction, or the energy can escape as heat and light.

How bad of an alcoholic do you have to be to have your brain affected?

Educake Chemistry Answers. One drink of alcohol is enough to affect your brain, whether you are an alcoholic or a casual social drinker. Alcohol is a psychoactive drug that interferes directly with the normal functioning of many parts of the brain. Fortunately, much of the effect caused by alcohol consumption can be repaired by the body when the person stops drinking.

But ongoing alcohol consumption at heavy levels can cause damage so severe that the body cannot repair it and the damage becomes permanent.

How does tomato juice make the skunk smell go away? (Educake Answers)

Educake answers. Tomato juice does not make the skunk odor go away. More specifically, tomato juice does not react chemically with the skunk odor to destroy it. Instead, it simply has a strong enough smell on its own to partially mask the skunk smell.

But in this respect, it is no different from any other strong odor. Perfume or scented candles will do just as well as tomato juice to mask the skunk smell. As soon as the tomato juice scent wears away, the skunk odor becomes noticeable again. A better approach is to deactivate the skunk spray through chemical reactions.

Your allies in this effort are bleach, hydrogen peroxide, and baking soda. Wash clothes and fabrics that have the skunk smell in bleach. To clean hard surfaces that have a skunk odor, spray on a cleaning solution that contains bleach, let it sit, and then wipe it off. To clean items that can not withstand bleach, such as pet fur or colored clothes, instead use a hydrogen peroxide/baking soda solution. Educake answers.

Combine one quart of 3% hydrogen peroxide, 1/4 cup baking soda, and 2 tbsp. liquid dish detergent for an excellent skunk odor killer that is safe enough to bathe pets in.

For best results, this solution should be scrubbed into the fur or fabric while still foaming. Note that this mixture is potentially explosive if left to sit too long in a sealed container. Discard the unused portion instead of storing it.

Educake Chemistry Answers.

Educake Chemistry Answers. What made the hole in the ozone go away?

The hole in the ozone over Antarctica still exists, but it is no longer the threat it once was according to an October 2012 NASA press release. According to NASA, the hole appears and disappears every year due to a complex interplay of seasonal weather patterns.

Ozone blocks most of the harmful ultraviolet rays from the sun, which would otherwise reach the earth’s surface and cause more skin cancer. The hole in the ozone, which in reality is more like a region of partial depletion than a complete hole, was dangerously increasing in size in the 1980s and 1990s.

Research indicated that the use of man-made CFC chemicals such as those found in aerosol cans contributed to the depletion of the ozone. As a result, the U.S. banned the use of CFCs in aerosol cans in 1978.

Other countries have imposed similar CFC bans and efforts to enact additional bans are underway. As a consequence of these legal measures, the hole in ozone stopped expanding from year to year and is slowly shrinking back to its 1980s state.

Why do atoms always contain the same number of electrons and protons?

Educake Chemistry Answers. Atoms do not always contain the same number of electrons and protons, although this state is common. When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons).

The total electric charge of the atom is therefore zero and the atom is said to be neutral. In contrast, when an atom loses or gains an electron (or the rarer case of losing or gaining a proton, which requires a nuclear reaction), the total charges add up to something other than zero.

Educake Chemistry Answers. The atom is then said to be electrically charged, or “ionized. There is a major difference between the neutral state and the ionized state. In the neutral state, an atom has little electromagnetic attraction to other atoms.

Note that the electric field of a neutral atom is weak, but is not exactly zero because the atom is not a point particle. If another atom gets close enough to the atom, it may begin to share electrons. Chemically, we say that the atoms have formed bonds.

Periodic Table

Educake Chemistry Answers. Why don’t metals burn?

Educake Chemistry Answers. Metals do burn. In fact, most metals release a lot of heat when they burn and are hard to put out. For example, thermite is used to weld train rails together. The fuel in thermite is the metal aluminum.

When thermite burns, the aluminum atoms bond with oxygen atoms to form aluminum oxide, releasing a lot of heat and light in the process.

As another example, hand-held sparklers use aluminum, magnesium, or iron as fuel. The flame of a sparkler looks different from the flame of a wood fire because metal tends to burn hotter, quicker, and more completely than wood.

This is what gives a lit sparkler its distinctive sparkling flame. In fact, most fireworks contain metal fuels. As another example, old flash tubes used in photography were nothing more than burning bits of magnesium in a glass bulb.

Also, the space shuttle’s solid rocket boosters used aluminum as fuel. Some metals, such as sodium, burn so well that we don’t make everyday objects out of them. Any boy scout who has started a fire using steel wool can attest to the fact that metals burn.

Educake Chemistry Answers.

Still, you may wonder why holding up a lit match to aluminum foil does not make it burn. Similarly, placing a metal pan on a kitchen flame does not make the pan burst into flames. In everyday situations, metal objects don’t seem to burn so much. How can this be possible if metals actually do burn? There are three main factors involved.

First, if you have a solid chunk of metal, it is hard to get oxygen atoms close enough to the majority of the metal atoms to react. In order to burn the metal, each metal atom has to get close enough to an oxygen atom to bond to it.

For large chunks of metal; like spoons, pots, and chairs; most of the atoms are simply too deeply buried to have any access to oxygen molecules. Furthermore, metals don’t vaporize easily.

When you burn a chunk of wood or a wax candle, the fuel particles readily vaporize, meaning that with just a little heat, they shoot out into the air where they have better access to oxygen atoms. In contrast, solid metals tend to have their atoms very tightly bound together, meaning that it is much harder to use heat to vaporize the metal.

Educake Chemistry Answers.

Also, organic materials like wood or cloth contain a lot of their own oxygen, whereas raw metals don’t. This is one reason why it is much harder to burn a metal spoon than a wooden spoon, even though they both consist of large chunks of material.

With this fact in mind, all we have to do is manually break apart the metal atoms in order to get them to burn better. In practice, this means grinding the metal down to a fine powder. When used as a fuel in commercial products and industrial processes, metals usually come in the form of a powder.

Although, even if you have ground a metal block down to a powder, it still won’t burn as efficiently as it could if you just use the oxygen in the ambient air. The problem is that air does not actually contain that much oxygen. Air is mostly nitrogen. The best approach is to mix oxygen directly into the powder.

Raw oxygen won’t work so well because it is a gas at room temperature and will float away. Instead, solid compounds containing loosely bound oxygen atoms can be mixed into the metal powder. In this way, the oxygen atoms can stably sit right next to the metal atoms, ready to react.

Educake Chemistry Answers. This approach is the most efficient way to get metals to burn well. For example, thermite is just aluminum powder (the fuel) mixed in with iron oxide (the oxygen source).