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Ostrovityanka [42]
2 years ago
13

Which models of the atom in task 1 are not supported by the results of the hydrogen gas experiment? For each of these models, ex

plain the experimental results that the model would predict.
Chemistry
1 answer:
kramer2 years ago
8 0

Answer:

Thomson  placed two magnets on either side of the tube, and observed that this magnetic field also deflected the cathode ray. The results of these experiments helped Thomson determine the mass-to-charge ratio of the cathode ray particles, which led to a fascinating discovery, minus the mass of each particle was much, much smaller than that of any known atom. Thomson repeated his experiments using different metals as electrode materials, and found that the properties of the cathode ray remained constant no matter what cathode material they originated from. From this evidence, Thomson made the following conclusions:

The cathode ray is composed of negatively-charged particles.

The particles must exist as part of the atom, since the mass of each particle is only ~1/2000 the mass of a hydrogen atom.

These subatomic particles can be found within atoms of all elements.

While controversial at first, Thomson's discoveries were gradually accepted by scientists. Eventually, his cathode ray particles were given a more familiar name: electrons. The discovery of the electron disproved the part of Dalton's atomic theory that assumed atoms were indivisible. In order to account for the existence of the electrons, an entirely new atomic model was needed.

Explanation:

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Explanation:

5 0
3 years ago
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Which formula represents a hydrocarbon with a double covalent bond?
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c is the answer

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4 0
2 years ago
He predicted an element with an atomic weight between 65 (zinc) and 75 (arsenic) with a valence similar to aluminum that he name
skad [1K]

Answer:

Scandium

Explanation:

Mendeleev played an important role in the development of the modern periodic table. His periodic table was filled with gaps. He said that these gaps were elements that were yet to be discovered. He rightly predicted many elements which have now been discovered and fitted in their proper places in the periodic table.

He used the prefix ''eka'' to refer to elements whose properties were alike but were yet to be discovered at that time.

The compound named ekaboron which he predicted to have an atomic weight between 65 (zinc) and 75 (arsenic) with a valence similar to aluminum was later discovered in 1879 and properly named scandium.

3 0
3 years ago
Help ASAP please. I don’t understand.
WARRIOR [948]

Answer:

a

Explanation:

4 0
3 years ago
1.From the pictures above,which shows a higher temperature?why?<br>2.which has more heat?why?​
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The coffee has a higher temperature because a pool is so you can have fun and relax in while coffee can warm you up by drinking it.

Explanation:

Hope it helps   :)

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2 years ago
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