They are found in group 3 of the periodic table.
Protons and neutrons have similar mass. Electrons are smaller than a proton or a neutron. An atomic scientist was studying an atom and through experimentation found that the total negative charge of the area surrounding the nucleus is -9.
Answer:kilogram
Explanation:
The basic unit of mass in the metric system, equal to 1,000 grams
Answer:
Steam because steam pushes out and ice stays dormant.
Explanation: