Protons, neutrons, electrons of atoms Credit Recovery worksheet

Learn about protons, neutrons, and electrons in atoms with this interactive science worksheet!

Use the periodic table to fill in the blanks, then answer the questions below. Atomic Symbol Atomic Number Protons Neutrons Electrons Mass Number B 5 5 6 5 11 Na 11 11 13 11 24 Ga 31 31 37 31 68 Y 39 39 50 39 89 Cu 29 29 35 29 64 Tc 43 43 57 43 100 Pb 82 82 125 82 207 Yb 70 70 102 70 172 Ac 89 89 136 89 225 Mo 42 42 53 42 95 B 5 5 5 5 10 Pb 82 82 126 82 208 Yb 70 70 105 70 175 H 1 1 0 1 1 Lu 71 71 104 71 175 The three types of subatomic particles are protons, with a positivecharge which are located in the nucleus, electrons, with a negativecharge located in orbitals around the nucleus, and neutronswith a neutralor no charge, which are also located in nucleus. Which two subatomic particles make up the majority of the mass of an atom and have approximately the same mass? (THERE ARE TWO ANSWERS, SELECT BOTH THAT APPLY!) Protons Electrons Neutrons What 3 columns in the table above ALWAYS have the same number for a given element? (SELECT 3 CHOICES) Atomic Symbol Atomic Number Protons Neutrons Electrons Mass Number Can atoms of different elements have the same mass number? Yes No Can two atoms of the same element have different mass numbers? Yes No