The electron configuration of an element is electrons 1s^ 2 2s^ 2 2p^ 6 . Describe what most likely happens when an atom of this element comes near an atom having seven valence

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?