Atoms and Atom Model Multiple Choice Questions Test 20 Tests pdf Download

Practice science test 20 on atoms and atom model MCQs, grade 7 mass number and isotopes multiple choice questions and answers. Mass number and isotopes revision test has science worksheets, answer key with choices as mass number after the element name, atomic number after the element name, atomic number before the element name and mass number before the element name of multiple choice questions (MCQ) with mass number and isotopes quiz as scientists name isotopes by putting for competitive exam prep. Free science study guide to learn mass number and isotopes quiz to attempt multiple choice questions based test.

MCQs on Atoms and Atom Model: Worksheets 20 Quiz pdf Download

MCQ. Scientists name isotopes by putting

  1. atomic number after the element name
  2. mass number after the element name
  3. atomic number before the element name
  4. mass number before the element name

B

MCQ. Particles that move around nucleus in orbits are

  1. electrons only
  2. protons only
  3. neutrons only
  4. electrons and protons

A

MCQ. Orbits on which electrons revolve around nucleus are called

  1. layers
  2. shells
  3. subshells
  4. orbitals

B

MCQ. Ion with a positive charge is known as

  1. Cation
  2. Anion
  3. Positron
  4. Negatron

A

MCQ. Positive electrical charges of protons are balanced by

  1. photons
  2. neutrons
  3. electrons
  4. positrons

C