This post is the list of PEKA experiments for SPM Chemistry Form 4 from Berry Berry Easy. Please familiarise with all these experiments from Form 4 Chemistry Chapter 2: The Structure of the Atom before conducting them so as to be better prepared. The list of experiments are as below:
Berry List of Chemistry Experiments (PEKA) Form 4 (Part 1)
Chapter 2 – The Structure of the Atom
List of PEKA experiments:
- Diffusion of particles in a gas, liquid and solid
- Rate of diffusion depends on the temperature
- Rate of diffusion depends on the mass of the gas particles
- Melting and freezing points of naphthalene, C10H8
| Number | Activity 2.1 |
| Pg. | 7 |
| Title | Diffusion of particles in a gas, liquid and solid |
| Aim | To investigate the diffusion of particles in a gas, liquid and solid |
| Problem Statement | How diffusion does occur through solid, a liquid and gas? |
| Hypothesis | Particles can diffuse through the spaces between the particles of a solid, a liquid and the gas. |
| Apparatus | A. Diffusion in a gas
B. Diffusion in a liquid
C. Diffusion in a solid
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| Material | A. Diffusion in a gas
B. Diffusion in a liquid
C. Diffusion in a solid
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| Variables |
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| Number | Activity 2.2 |
| Pg. | 8 |
| Title | Rate of diffusion depends on the temperature |
| Aim | To show that the rate of diffusion depends on the temperature |
| Problem Statement | How does rate of diffusion depends on the temperature? |
| Hypothesis | Higher temperature can increase the rate of diffusion |
| Apparatus |
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| Material |
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| Variables |
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| Operational Definition | Higher temperature in water increases the particles to move faster and increases the rate of diffusion. / Higher temperature in water increases the kinetics energy than lower temperature in water. |
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| Number | Activity 2.3 |
| Pg. | 9 |
| Title | Rate of diffusion depends on the mass of the gas particles |
| Aim | To show that the rate of diffusion depends on the mass of the gas particles |
| Problem Statement | How does rate of diffusion depends on the mass of the gas particles? |
| Hypothesis | Low molecular masses diffuse faster than those with high molecular masses |
| Apparatus |
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| Material |
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| Variables |
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| Operational Definition | Gas with low molecular masses diffuse faster than those with high molecular masses. |
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| Number | Activity 2.4 |
| Pg. | 9 |
| Title | Melting and freezing points of naphthalene, C10H8 |
| Aim | To determine the melting and freezing points of naphthalene, C10H8 |
| Problem Statement | How does rate of diffusion depends on the mass of the gas particles? |
| Hypothesis | The temperature of naphthalene, C10H8 increase during heating except at its melting and solidification points |
| Apparatus |
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| Material |
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| Variables |
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