The word "atom" means: the smallest imaginable thing
that which cannot be cut
everything that is not vacuum
that which cannot be seen

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?