4 years ago

Why might it be important to test one variable at a time when doing an experiment?

Chemistry

1 answer:

Vanyuwa [196]4 years ago

4 0

Answer:

If you change everything at once, you may not know what caused the end result.

Explanation:

If you have Variable A (Salt), Variable B (Potassium), and the Control of Water, you might mix everything together, so you mix salt, potassium and water together. It is known that Potassium reacts very aggressively in water, but since you mixed everything together, you might think that salt+potassium+water goes boom, while it is actually potassium+water=boom.

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Describe the main difference between the Bohr model and the electron cloud model of the atom

Leno4ka [110]

Answer:

The main difference between the two models is the position of the electron in the atom.

Explanation:

Bohr model: The electrons are moved around the nucleus in circular definite paths (orbitals or shells). Also, he could not find or detect the exact position of electron.

Electron cloud model: It is supposed by Erwin Schrodinger. He showed that the emission spectra of the atom is the way to detect the probability of electron position.

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klasskru [66]

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