"The word atom has a Greek origin, meaning indivisible. Why was this term chosen to describe the particles that form matter? Is the atom really indivisible?".
Answer:
An atom is termed as the basic unit for generating or creation of the different complex structures, as they are characterized by the different shapes and properties due to position or alignment of the different number of atoms inside the given parameters or are of the object.
It was a belief in the early times that atom is not divisible further in to small sub atomic parts, this concept was improved by the experiments of the cathode ray tube etc.
Explanation:
However, the atom is comprised of the following subatomic particles which are as follows:
The nucleus is comprised of the protons(positrons) and neutrons.
While, the outer region or the cloud is comprised of the electrons inside the different shells and orbits.
Answer: These changes of state are physical changes
Explanation: changes between gas, liquid and solid phases do not alter the chemical or atomic state. Ice, water and water vapour all have the chemical formula H2O.
On a larger scale, photosynthesis and cellular respiration are "reversible" processes in terms of the chemical equations. ... The forward is cellular respiration. The reverse is photosynthesis (energy can be ignored).
