# Physics SS 1 Curriculum Guides – Energy Quantization and Duality and Matter – Fluids at Rest and in Motion and Particulate Nature of Matter

THEME – ENERGY QUANTIZATION AND DUALITY OF MATTER

### INSTRUCTIONAL MATERIALS

Measuring cylinder, liquid (water, kerosene), stop clock/watch, steel balls, masking balls, masking tape

### LEARNING OBJECTIVES

By the end of the lesson, students should be able to:

1. define surface tension in liquids.

2. classify fluids according to their viscous properties.

3. give at least two examples of the application of surface tension and viscosity

### FOCUS LESSONS

1. Surface tension – definition and effects.

2. Viscosity

3. Applications

### LESSON PRESENTATION

TEACHER’S ACTIVITIES

The teacher,

1. performs simple experiments on surface, tension.

2. leads discussion on the applications of viscosity.

STUDENT’S ACTIVITIES

The students,

1. time, the fall of objects in liquids.

2. discuss the applications of viscosity in the design of ships, aeroplane, etc.

### LESSON EVALUATION

Students to,

1. give examples of effects of surface tension.

2. explain the effects of temperature on viscosity.

THEME – ENERGY QUANTIZATION AND DUALITY OF MATTER

### INSTRUCTIONAL MATERIALS

1. Black box, smoke cell and microscope

2. A long tube, corks, HCl and NY4OH, cotton wool absorbent

3. Yam, knife blade, a big bowl, water falcum powder, oil

4. Models of the atom

### LEARNING OBJECTIVES

By the end of the lesson, students should be able to:

1. formulate simple hypothesis and test them before they can draw conclusions based on specific information.

2. explain how molecules of a substance move relative to other molecules of the same substances.

3. describe the atomic structure of matter.

4. state the constituents of the atom.

5. use molecular theory to explain the three states of matter.

6. describe the structure of simple crystals.

7. distinguish between crystalline and amorphous substances.

8. use the concept of photon to explain that light behaves like particles.

### FOCUS LESSONS

1. Structure of matter:

• evidence of particle nature of matter
• simple atomic structure

2. Molecules:

• their nature
• size

3. Crystal structure of matter

4. States of matter

• solid
• liquid, and
• gas

5. Photons: particle nature of photons.

### LESSON PRESENTATION

TEACHER’S ACTIVITIES

The teacher,

1. recalls the black bore experiment in JSS Integrated Science – observe random motion of particles:

• in a beam of light entering through a window into a dusty room.
• under the microscope using the smoke cell.

2. leads discussion on the concept of the atom ; give a simple illustration, e.g. successive cutting of a piece of yam.

3. uses models to illustrate the three states of matter.

4. leads discussion on the idea that light have particle properties.

STUDENT’S ACTIVITIES

The students,

1. observe the relative motion of HCl fume with that of NH4OH fume.

2. estimate the size of an oil molecule from an oil drop experiment.

3. discuss on the idea that light have particle molecules.

### LESSON EVALUATION

Students to,

1. explain the structure and states of matter.

2. measure the size of a molecule as a class activity.

3. distinguish between crystalline substances giving examples.

4. mention the particle properties of photons.