2points
how did j. j. thomson change the atomic model based on his experimental
results?

D- He described the atom as a sea of positive charge sprinkled with electrons

atomic = no of protons.

mass number-atomic number = neutron number

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.