Work out the decrease in mass. jo
.fter one week there was a white solid but no liquid in the dish.
Vhat had happened to the water in the dish?
The water collidified
the water a salt
hat was the white solid left in the dish?
3.d
ma​

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several