<span>Yes. a chemical change is when chemical bonds are made or broken. combustion of gasoline (probably octane) makes water and carbon dioxide.</span>
Answer:
B)
Explanation:
Dalton was the first scientist to propose an atomic model. He said that each element is composed of extremely small particles called atoms, which are indivisible, atoms of a given element are identical, and atoms of different elements have different properties.
With the advance of the studies, it was proven that elements are composed of small particles, atoms and that the atoms of each element are identical, and have different properties from atoms of different elements.
But, now we know that the atom can be divisible: it's formed by electrons, protons, and neutrons. So only postulate <em>ii</em> is no longer considered valid.
Answer : The balanced chemical reaction will be,
Explanation :
Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.
Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.
Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.
Glucose on oxidation gives carbon dioxide and water as a product and some amount of energy is also released.
The balanced chemical reaction will be,
In this reaction, glucose molecule shows oxidation due to change in oxidation state of carbon from (0) to (+4) and oxygen molecule shows reduction due to change in oxidation state of oxygen from (0) to (-2).
Answer:
Formula mass in daltons of the chemical component.