When heating a substance, a phase change will start to occur when the kinetic energy of the particles is the attractive forces between the particles.

equal to

low enough to overcome

great enough to overcome

great enough to combine

low enough to combine

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid