What statement is TRUE about the subatomic particles within an atom? a

Protons and electrons have the same mass.

b

Protons have a positive charge and are found in the nucleus.

c

Neutrons are negative and are found outside the nucleus.

d

Electrons are negative and are found in the nucleus.

The three subatomic particles in an atom are protons, neutrons, and electrons:

Protons have a relative mass of 1 and a charge of +1, and they are found in the nucleus of an atom.

Neutrons have a relative mass of 1 and no charge, and they are also found in the nucleus of an atom.

Electrons have a relative mass of 1/1836 and a charge of -1. They are found in specific orbits around the nucleus and are held in these orbits by the positive charge of the protons in the nucleus.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error