Atoms and Atom Model Multiple Choice Questions 23 PDF Download

Learn atoms and atom model MCQs, grade 7 science test 23 for online learning courses and test prep, mass number and isotopes multiple choice questions and answers. Mass number and isotopes revision test includes science worksheets to learn for 7th grade science exam.

Science multiple choice questions (MCQ): 'isotope' carbon-12 makes up about with choices 80% of carbon on earth, 90% of carbon on earth, 99% of carbon on earth and 89% of carbon on earth, mass number and isotopes quiz with virtual academy portal for online learning of mid term and final exams preparation. Free science study guide to learn mass number and isotopes quiz to attempt multiple choice questions based test.

MCQs on Atoms and Atom Model Quiz PDF Download Worksheets 23

MCQ: 'isotope' carbon-12 makes up about

  1. 90% of carbon on earth
  2. 80% of carbon on earth
  3. 99% of carbon on earth
  4. 89% of carbon on earth

C

MCQ: One molecule of carbon dioxide consists of

  1. one carbon and two oxygen atoms
  2. one carbon and oxygen atom
  3. two carbon and one oxygen atom
  4. two carbon and one oxygen atoms

A

MCQ: Atoms of different elements differ from each other because of

  1. difference in color
  2. difference in size
  3. difference in shape
  4. difference in particle numbers

D

MCQ: When salt is formed, sodium

  1. gives an electron to chlorine
  2. takes an electron from chlorine
  3. shares an electron with chlorine
  4. takes a proton from chlorine

A

MCQ: In an atom of carbon, electronic configuration is

  1. 2 electrons in K shell and 4 in M shell
  2. 2 electrons in L shell and 4 in M shell
  3. 2 electrons in K shell and 4 in L shell
  4. 4 electrons in K shell and 2 in L shell

C