Which change is most likely to occur when a molecule of H2 and a molecule of I2 collide with proper orientation and sufficient e
2 answers:
Answer : The correct option is, (1) a chemical change, because a compound is formed
Explanation :
Physical change : It is a change in which no new compound or substance is formed only changes in the phase.
Chemical change : It is a change in which a new compound or substance is formed and also some energy releases. There is no changes occurs in the phase.
When a molecule of and a molecule of
collide with proper orientation and sufficient energy then the chemical changes occurs due to the formation of the new compound.
Hence, the correct option is, (1) a chemical change, because a compound is formed
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Answer: protons and neutrons.
The nucleus is made up of 3 subatomic particles that are protons,neutrons and electrons.
General notation of an element is
where, X is the Element, A is the Atomic Mass and Z is the Atomic Number
If we know the number of protons we can easily find out the atomic number of any element because Atomic Number = Number of protons in an element.
And in addition if we know the number of neutrons we can easily find out the atomic mass of an element because
Atomic Mass = (Number of protons) + (Number of neutrons)
If we get to know the atomic number and atomic mass, we can easily tell what element is it by looking from the periodic table.