WorksheetsAssessment on Atomic Theory
Total questions: 20
Worksheet time: 10mins
(True or False) Protons and neutrons are particles with mass that are found in the nucleus of an atom. Electrons have very little mass and orbit the nucleus in the electron cloud.
True
False
(True or False) Protons have a negative charge, electrons have no charge, and neutrons have a negative charge.
True
False
(Type in your answer) Fluorine (F) has an atomic number of 9 and an atomic mass of 19. How many protons, neutrons, and electrons does a neutral atom of fluorine have? (use this format for your answer: #, #, #)
(a)
(Type in your answer) Indium (In) has an atomic number of 49 and an atomic mass of 115. How many protons, neutrons, and electrons does a neutral atom of Indium have? (use this format for your answer: #, #, #)
(a)
Calcium-42 has an atomic mass of 42 and an atomic number of 20. How many neutrons does this isotope of Calcium contain?
42
62
22
20
(Type in your answer) What is the name of the element with an atomic number of 51, the atomic mass (rounded to the nearest whole number), and its atomic symbol? (separate your answers with commas)
(a)
(Type in your answer) What is the name of the element with an atomic number of 14, the atomic mass (rounded to the nearest whole number), and its atomic symbol?
(a)
(True or False) Groups are rows on the periodic table while Periods are columns on the periodic table.
True
False
