Abeka Chemistry Test 11 fully solved exam study guide (100% accurate expert solutions)download to pass (2024)

FAQs

Does nuclear fission power involve significantly greater risk than most other forms of power generation? ›

These are the only major accidents to have occurred in over 18,500 cumulative reactor-years of commercial nuclear power operation in 36 countries. The evidence over six decades shows that nuclear power is a safe means of generating electricity. The risk of accidents in nuclear power plants is low and declining.

Oxidation/reduction reactions

Oxidation refers to the loss of electrons by a substance. Oxygen may or may not be involved in the reaction. The substance oxidized is transformed into a second substance with a lower level of potential energy.

The list of metals arranged by their relative ease of oxidation is called an activity series. Thus, option A is correct. In this context, when we refer to the ease of oxidation, we mean how easily a metal can lose electrons and form positive ions in a chemical reaction.

The civilian mortality from Chernobyl contamination is 15 thus far, in each case from thyroid cancer. Operator and first-responder mortality from the event is 35. All other known fatalities from nuclear plant operations have occurred among nuclear plant employees and contractors, and total to 50.

Critics of nuclear power claim that it is the beneficiary of inappropriately large economic subsidies, taking the form of research and development, financing support for building new reactors and decommissioning old reactors and waste, and that these subsidies are often overlooked when comparing the economics of ...

Oxidation is the process of losing an electrons, while reduction is the process of gaining them. Any chemical that causes another chemical to lose electrons (become oxidized) is called an oxidizing agent. Conversely, any chemical that causes another chemical to gain electrons is called a reducing agent.

An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction.

Oxidation is the loss of electrons by an atom, ion, or molecule. The atom, ion, or molecule that is oxidized will become more positively charged.

Rust can be defined as a scale that is formed on the surface of steel when exposed to oxygen in the environment. As a consequence, a brown, reddish or orange color is generated on it, which can vary according to the different productive process and chemical components such as chromium (Cr), copper (Cu), among others.

The order of some common metals in the electromotive series, starting with the most easily oxidized, is: lithium, potassium, calcium, sodium, magnesium, aluminum, zinc, chromium, iron, cobalt, nickel, lead, hydrogen, copper, mercury, silver, platinum, gold.

What metal turns red when oxidized? ›

Iron tends to turn orange/brown/red when oxidized. Copper tends to turn blue/green/turquoise when oxidized. Manganese tends to turn purple/black when oxidized. Cobalt turns blue when oxidized.

The safest energy sources by far are wind, solar, and nuclear energy at fewer than 0.1 annual deaths per terawatt-hour. Nuclear energy, because of the sheer volume of electricity generated and low amount of associated deaths, is one of the world's safest energy sources, despite common perceptions.

If uncontrolled, that chain reaction could produce so much heat that the nuclear reactor core itself could actually melt and release dangerous radiation. That's why power plants use “control rods” that absorb some of the released neutrons, preventing them from causing further fissions.

Nuclear fission power plants have the disadvantage of generating unstable nuclei; some of these are radioactive for millions of years. Fusion on the other hand does not create any long-lived radioactive nuclear waste. A fusion reactor produces helium, which is an inert gas.

The possibility of radioactive accidents and the long-term storage of nuclear waste often raise concern from the public. Past accidents from nuclear fission energy include the Three Mile Island accident in 1979, the f*ckushima accident in 2011, and, the most damaging, the Chernobyl accident in 1986.