Keri has to identify a mysterious brown liquid in science class. she pours it through a filter, but the substance looks the same. then she heats the substance and collects the water that evaporates. the water droplets look the same as the original substance. keri concludes that since the substance cannot be separated it must be a compound. is keri correct?

The answer is NO. It can not be a compound it is an element.

In a component mixture it can be separated physically way from the other.

In element it can be only separated by a way of destroying the compound itself by chemical reaction.

Answer is: No, because the substance could be an element.

Pure substance is made of only one type of atom (element) or only one type of molecule, it has definite and constant composition with distinct chemical properties.

Pure substances can be separated chemically, not physically, that is difference between pure substances and mixtures.

Elements (for example copper, iron, sulfur) and compounds (water, sodium chloride) have definite and constant composition with distinct chemical properties.

well, they made a movie about how animals lived there.

rotten tomato score 95%

note: mark other user brainliest.!

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.