Helium oxygen carbon fluoride and chlorine are all nonmetals using the periodic table which pair of nonmetals do you predict has the most similar properties and why

What term describes technology that operates on an atomic level

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt

Drag each pressure unit with the corresponding number to describe standard atmospheric pressure