How did atomic theory develop and change?

Answers

Answer 1

Answer:

The atomic theory develop and change as the from the Bohr's model is that how electrons occupy the space using the scientific method from the philosophy.

The John Dalton develop the Proust's work and then change the atomic philosophy of the into the scientific theory. Scientists did not believe that the electrons move in the regions not in the orbits and then they uses the mathematics and quantum numbers for the explanation.

The Bohr's model is to describe the chemical properties of an atom. The experiments demonstrated that atoms of the same element contains the different masses as the number of the neutrons can vary and called as the isotopes of the same element.

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Answer 2

Answer: The atomic theory started with Democritus, who stated that all space was made up of indivisible particles called atoms, though Aristotles refuted that statement by saying that matter didn’t exist, he believed in the four elements: air, fire, water, and earth. Then came Dalton, who revived Democritus’s ideas and proposed the law of multiple proportions, he revived the idea that all space was made of atoms. Soon after, J.J Thompson discovered the electron by using cathode rays. Max Planck developed the quantum theory by stating that electromagnetic radiation could only be emitted in quantized form (later called quanta). Einstein furthered this idea with studies of light. Robert Millikan eventually measured the charge of a single electron. Ernest Rutherford used a gold foil experiment and discovered the nuclei, considering his alpha particles were deflected by some object. Niels Bohr made the atomic model with electrons spinning around an atom’s nucleus, Erwin Schrodinger describes how electrons have wave like properties. James Chadwick then discovers the neutron!

There ya have it!

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How are vibrations different between bigger sizes rubber bands and smaller sized rubber bands?

Answers

Assuming the kind of vibration you are talking about is the kind where you stretch the rubber band between two points and then "twang" it, then the answer is fairly complex. What happens when you cause the vibrations to start is you make something called a "standing wave". In a standing wave, each particle in the rubber band has a certain amount of energy which causes it to move backwards and forwards, the particles with more energy have a larger "amplitude" (how much they move), and of course the particles with less energy have a smaller amplitude. Now a standing wave has two main components: The amplitude, and the frequency. The amplitude of the whole wave refers to the largest amplitude any particles has. The frequency refers to how often it takes for one of the particles to move between the two furthest away points it can be.
To compare rubber bands, you must remember to keep certain things constant. If you're looking at their vibrations, the amount of energy you use to "twang" the rubber band should be the same each time you twang it (which is the same as applying the same force each time you twang it).

A larger rubber band has more area over which to spread the energy, as well as it has more mass for the energy to move, so the vibrations will have smaller amplitudes, and smaller frequencies, overall vibrating less and with smaller vibrations.

In general, what is the effect of tempature on the solubility of a gas

Answers

Increased temperature causes an increase in kinetic energy. The higher kinetic energy causes more motion in the gas molecules which break intermolecular bonds and escape from solution.

Describe the basic particle from which all elements are made

Answers

nucleus: contains protons and neutrons
electron cloud: surrounds the necules and contains the electrons

Electrons- negatively charged, smallest particle
Protons- positively charged
Neutrons- no charge

1.00 L of gas at a standard temperature and pressure is compressed to 473mL. What is the new pressure of the gas?

Answers

Answer:

The pressure of the gas is 2.11 atm.

Explanation:

From the given,

$V_(1)=1.00\,L$

$P_(1)=1\,atm$

$P_(2)=?$

$V_(2)=473\,ml=0.473\,L$

$P_(1)V_(1)=P_(2)V_(2)$

$(1)(1)=(0.473)(P_(2))$

$P_(2)=((1)(1))/(0.473)=2.11$

Therefore, The pressure of the gas is 2.11 atm.

Final answer:

Boyle's law is used to find the new pressure after the gas is compressed from 1.00 L to 0.473 L. The original pressure is 1 atm at Standard Temperature and Pressure (STP). After the compression, the new pressure is approximately 2.12 atm.

Explanation:

The question relates to gas laws, specifically Boyle's law, which states that the pressure of a gas is inversely proportional to its volume when the temperature and amount of gas are held constant. At Standard Temperature and Pressure (STP; 273.15 K and 1 atm), one mole of an ideal gas occupancies a volume of about 22.4 L. In this case, the initial conditions are at STP, with a gas volume of 1.00 L, equating to a pressure of 1 atm. When this volume is compressed to 473 mL (or 0.473 L), the pressure can be determined using Boyle's law, i.e., P1V1 = P2V2. After substituting the values, we can solve for the new pressure (P2) which will be approximately 2.12 atm.

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Question 1 of 15
2 Points
What is another name for a pure substance?
Answer here

Answers

Answer:

element

Explanation:

elements consist of pure substances

What energy convertion happens when green plants use energy from the sun to make sugar?

Answers

The energy conversion happening here is known as photosynthesis. Photosynthesis is a process where the leaves of a plant absorb water and carbon dioxide, then, using light energy from the sun, convert that into oxygen and sugar.

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