Atoms and Elements

Learn about atoms, elements, and their parts! This worksheet covers protons, neutrons, and electrons.

Fill in the missing spaces below. ROUND THE ATOMIC MASS! (mass - atomic number = neutron) (electrons are equal to protons in neutral atoms) 9 19 9 10 9 Fill in the blanks by clicking on the blank, then choosing the correct term. Atoms with the same number of protons and electrons (positives and negatives) are considered to be neutralatoms. Protons are found in the nucleusof an atom, while electrons are found in the electron cloud. Neutronsand protons make up the nucleusof an atom. Where is most of an atom's atomic mass? In the nucleus In the electrons cloud Atoms do not have atomic mass It cannot be determined How can you determine an atom's atomic mass? Add the protons and electrons together Add the protons and neutrons together Add the electrons and neutrons together It cannot be determined Fill in the missing spaces. Round the atomic mass! (mass - atomic number = neutron) (electrons are equal to protons in neutral atoms) 3 7 3 4 3 Match the subatomic particles with their charge and mass. protons positive, 1 amu neutrons neutral, 1 amu electrons negative, 0 amu Electrons are found inside the nucleus and have a negative charge. True False Label the atom Label the following on the atom below: electron, proton, neutron, nucleus, orbital. electron proton neutron orbital