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Methodical recommendation:

Theory

Number Name Description
1. Introduction to atoms and molecules This theory recalls some concepts of an atom.
2. Atom and Atomic mass This theory explains matter, atomic mass and relative atomic mass.
3. Average Atomic Mass This theory explains the average atomic mass.
4. Average Atomic Mass (AAM): Calculation This theory explains the calculation of average atomic mass.
5. Molecule and molecular mass Molecule and its classification is explained in this theory.
6. Relative Molecular mass (RMM) and its calculation Relative Molecular Mass and its calculation is explained in this theory.
7. Mind map The subtopic of atoms and molecules is illustrated by a mindmap.

Practice Questions

Number Name Type Difficulty Marks Description
1. Book back questions: Fill in the blanks 1st type - receptive easy 2 m. Answer the given questions (book back and additional questions) to recall the chapter.
2. Atomicity: match the correct answer 1st type - receptive easy 3 m. You can remember the atomicity of certain chemical compounds by performing this exercise.
3. Atoms and molecules: Choose the correct answer 1st type - receptive easy 3 m. Recall some concepts of atoms and molecules by answering the given questions.
4. Atoms and molecules: True or false 1st type - receptive medium 2 m. Recall the concept of postulates of modern atomic theory and relative atomic mass.
5. Additional important questions 2nd type - interpretation medium 2 m. By answering the given questions, revise some important concepts.
6. Classification of molecules: Drag & drop 3rd type - analysis medium 6 m. Recall the concept of the classification of molecules by answering the given questions.
7. Atoms and molecules: Fill in the blanks 3rd type - analysis medium 3 m. Answer the given questions to recall the chapter.
8. Book back questions: True or false and Assertion & Reason 3rd type - analysis medium 3 m. Analyse and answer the given questions (book back and additional questions).
9. Atoms and molecules: Choose the correct answer 3rd type - analysis medium 2 m. By answering the given questions, you can improve your learning for the exam.
10. Number of atoms in a substance 3rd type - analysis medium 3 m. Practice calculating the number of atoms in the same amount of samples.

Questions for Teacher Use

Number Name Type Difficulty Marks Description
1. Finding relative molecular mass Other easy 1 m. You can practice how to calculate the relative molecular mass of chemical compounds by answering this exercise.
2. Molecules: Short answer questions Other medium 6 m. Answer the questions to recall the molecule's concepts and classification.
3. Atoms and molecules: Previous years questions Other medium 5 m. By solving previous year's questions, you can improve your learning for the exam.
4. Book back questions: Sort answer Other medium 4 m. Write the answers for the given questions to practice the sort answer questions.
5. Book back questions: Solve the problems Other medium 1 m. Analyse and answer the given questions.
6. Calculating Average Atomic Mass Other medium 5 m. You can practice how to calculate the average atomic mass of elements found as a mixture of isotopes by answering the given questions.
7. Stable isotopes of some elements: Calculating protons, neutrons and mass number Other hard 8.5 m. Calculating protons, neutrons, and mass numbers in relation to one another.
8. Calculating atomic mass Other hard 9 m. Atomic masses of some natural isotopes are calculated in this exercise
9. Avogadro’s number Other medium 1 m. Answer the questions to evaluate your understanding of atoms and molecules.
10. Atomic and mass number Other medium 1 m. This exercise contains one REMA test question and answer, which holds one mark. The student has to choose the best answer. As an outcome of this exercise, the student will learn about the atomic number and mass number.

Tests

Number Name Recomended time: Difficulty Marks Description
1. Training Test 00:30:00 medium 10 m.

Periodic assessments

Number Name Recomended time: Difficulty Marks Description
1. Homework 00:30:00 medium 8 m.
2. Homework-I 00:40:00 medium 14 m.
3. Progress Test 00:45:00 hard 10 m.
4. Progress Test-I 00:45:00 medium 15.5 m.
5. Progress Test-II 00:35:00 medium 10 m.
6. Periodic Assessment 00:10:00 medium 2 m. PA1 - Atoms and Molecules
7. Periodic Assessment - 3 00:10:00 medium 2 m. PA3