Grade 7 Chemistry

After completing this unit you should be able to:

- understand concepts related to light - develop skill of manipulating problems related to light.

- appreciate the interrelatedness of all things.

- use a wide range of possibilities for developing knowledge of the major concepts with in physics.

After completing this unit you should be able to:

- describe the properties of substances and identify certain substances using their physical properties;

- conduct an experiment to differentiate elements, compounds and mixtures;

- explain physical and chemical changes;

- describe and demonstrate methods of separation of mixture and apply them in their daily life;

- demonstrate scientific inquiry skills along this unit: observing, classifying, comparing and contrasting, communicating, asking questions, designing experiments, drawing conclusions, applying concepts and problem solving.

After completing this unit you should be able to:

- write symbols of some common elements and give names from their symbols;

- write the formulas of diatomic elements and simple compounds;

- name simple common compounds; - explain the qualitative and quantitative meanings of chemical symbols and formulas;

- write simple chemical reactions and change word equation to formula equation

- balance simple chemical equations by using inspection and LCM methods;

- describe scientific enquiry skills along this unit: Classifying, comparing and contrasting, communicating, asking questions, drawing conclusion and applying concepts.

After completing this unit you should be able to:

- narrate the historical development of the atomic nature of substances;

- state Dalton's Atomic Theory and Modern Atomic Theory: - describe the structure of an atom

- explain the terms like atomic number, mass number, atomic mass and isotope;

- appreciate the importance of study of subatomic particles in understanding properties of substances;

- explain the arrangement of electrons in the main energy levels and write the electronic configuration of the first 18 elements; - differentiate molecules of elements from molecules of compounds; and

- demonstrate scientific inquiry skills along this unit: observing, comparing and contrasting, making model, communicating, asking questions. 

After completing this unit you should be able to:

- narrate the historical development of periodic classification of elements;

- state Mendeleev's periodic law, discuss the contributions and shortcomings of his periodic classification of elements:

- state the modern periodic law;

- explain the relationship between the electronic configuration of the atoms and arrangement of the elements in the periodic table; - explain the structure of the modern periodic table;

- describe the trends in nuclear charge, atomic size, metallic and non metallic character of elements across the period and down a group of the modern periodic table;

- appreciate the importance of periodic classification of elements; and

- demonstrate scientific inquiry skills along this unit: observing, classifying, communicating, asking questions, interpreting data, applying concepts and making generalizations.