Answer:
B. A harmful compound can become harmful when its elements are seperated.
Explanation:
In the question, common table salt, NaCl was the illustration.
NaCl is a crystalline solid whjch has different benefits like for preservation, add taste to foods etc. NaCl is generally consumed by humans daily and is found readily. This goes to show that NaCl is a harmless compound but the individual elements that is, Soduim and Chlorine gas,
2Na + Cl2 --> NaCl
Soduim metal is a reactive and unstable element with 1 (valence) electron in its outer shell. Hence why the reaction of sodium strips with water is explosive.
Chlorine gas is very poisonous, unstable as well as reactive because of the 7 (valence) electrons in its outermost shell.
Answer:
i think u left ur sister in my house come get her plz
Explanation:
For a proton moving west and enters a magnetic field. So in as much as the magnetic field the proton curves upward, we may conclude that the magnetic field must have a component towards the south
<h3>What is magnetic field?</h3>
Magnetic field can simply be defined as tat region the portion of space around or near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.
So therefore, for a proton moving west and enters a magnetic field. So in as much as the magnetic field the proton curves upward, we may conclude that the magnetic field must have a component towards the south.
Learn more about magnetic field:
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The correct answer is - B) the water quality of the stream.
By studying the fish populations and their well being, the watersheds, as well as the composition of the water, the scientists are trying to keep track of the situation of the quality of the water in the stream.
The fish populations, their activity, well being, are always a nice indicator about the water quality, as they live in it and are directly effected by any negative changes in the water quality.
The watersheds can also show a partial picture of the quality of the water in the streams, and that is because the water passes through them before entering the stream itself, so a clean and healthy watershed, often means good quality of the water.
The most relevant indicator of the quality of the water in the stream is still the testing of the water itself, where the water composition can be examined in detail thus to be determined its condition.
