During a chemical reaction, matter cannot be created nor destroyed, matter can change form through physical and chemical changes, but through any of these changes, matter is conserved; even though the matter may change from one form to another, the same number of atoms exists before and after the change takes place :)
The 6 models of the atom:
1. John Dalton's atomic model: Daltons Billiard Ball (Solid Sphere) Model
2. J.J. Thomson's model: Plum Pudding model
3. Ernest Rutherford's model: Nuclear model
4. Niels Bohr's model: Planetary model
5. Erwin Schrdinger's model: Electron Cloud Model/Quantum Model
6. Wave mechanical model
<h3>Atom</h3>
The smallest component that makes up a chemical element is an atom. Atoms that are neutral or ionized are the building blocks of all solids, liquids, gases, and plasma. A normal atom is 100 picometers across, which is incredibly small. Because of quantum effects, they are so small that it is impossible to predict their behavior with sufficient precision using classical physics, as if they were, say, tennis balls. One or more electrons are attached to the nucleus of every atom, which is made up of a nucleus. Protons and neutrons, in various numbers, make up the nucleus. Neutrons exist only in the most prevalent type of hydrogen. An atom's nucleus makes up more than 99.94% of its mass.
how to build 6 individual atoms?
Learn more about atom here:
brainly.com/question/1566330
#SPJ1
Answer:
Spectrum 1- Biphenyl
Spectrum 2 - Benzil
Spectrum 3 - Bibenzyl
Explanation:
<u>For Benzil:
</u>
<u>
</u>The Spectrum - 2 shows this compound.The C=O and C-H bond stretching observed at following values.
<u> For Biphenyl:
</u>
<u>
</u>Spectrum - 1 shows this compound.
There are stretching vibrations from 
due to C-H stretching and C-C stretching respectively of aromatic ring only.
<u>For Bibenzyl:
</u>
Spectrum - 3 shows this compound
There are stretching vibrations at 
due to C-H stretching and C-C stretching of aromatic ring.
Along with this, stretching vibrations at 
due to C-H of alkyl.
A chemical change will result in different molecules in the products of the reaction than were there initially.
For example, Toasting a marshmallow would be an example of chemical change because toasting a marshmallow will cause its sugars to cook/burn causing a crust made of new substances.
No other answer choice gives us products that are different from the reacting materials. Therefore, the rest of the answer choices must all be physical changes.
