Which change is most likely to occur when a molecule of h2 and a molecule of i2 collide with proper orientation and sufficient energy? 1. a chemical change, because a compound is formed 2. a chemical change, because an element is formed 3. a physical change, because a compound is formed 4. a physical change, because an element is formed

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

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.