Introduction:
In this portfolio, I will be exploring the concept of matter interactions in Science 8. Matter interactions refer to the various ways in which matter can interact with other matter or energy. Throughout this quarter, we have learned about the different states of matter, physical and chemical changes, and the properties of matter. These concepts have allowed us to understand the interactions that occur between different substances and how they can lead to various phenomena. In this portfolio, I will be discussing my understanding of these topics and showcasing some of the activities and experiments I have done to reinforce my learning.
Table of Contents:
1. States of Matter
2. Physical Changes
3. Chemical Changes
4. Properties of Matter
5. Experiment: Dissolving Salt in Water
6. Experiment: Combustion of a Candle
7. Conclusion
1. States of Matter:
One of the fundamental concepts we learned was the different states of matter - solid, liquid, and gas. Solids have a definite shape and volume, liquids have a definite volume but no definite shape, and gases have no definite shape or volume. I understand that these states are a result of how closely the particles in the substance are packed and how much they are able to move. For example, in a solid, the particles are tightly packed and can only vibrate in place, while in a gas, the particles are spread out and can move freely.
2. Physical Changes:
Physical changes refer to the changes in matter that do not result in the formation of new substances. These changes can include changes in state, shape, size, or form. One example of a physical change is when ice melts to form water. The chemical composition of the substance remains the same, but the state changes from solid to liquid. I have performed several experiments to observe physical changes, such as melting ice cubes, boiling water, and dissolving sugar in water.
3. Chemical Changes:
Chemical changes, on the other hand, result in the formation of new substances with different properties. These changes involve the breaking and forming of chemical bonds. One example of a chemical change is the rusting of iron. The iron reacts with oxygen in the air to form a new substance, iron oxide. To further understand this concept, I conducted an experiment to observe a chemical change, which I will discuss later in the portfolio.
4. Properties of Matter:
Matter has various properties that can help us identify and classify different substances. Some common properties of matter include color, odor, texture, density, and conductivity. Understanding these properties can allow us to predict how different substances will interact with each other. For example, substances with similar densities are likely to mix together, while substances with different densities may form layers. I have conducted experiments to observe and measure some of these properties, such as testing the conductivity of different materials.
5. Experiment: Dissolving Salt in Water:
One experiment that helped me understand matter interactions was dissolving salt in water. I took a glass of water and added salt to it, stirring it until the salt completely dissolved. This experiment allowed me to observe a physical change as the salt particles mixed with the water particles, forming a homogeneous solution. It also helped me understand the concept of solubility, i.e., how well a substance can dissolve in a particular solvent.
6. Experiment: Combustion of a Candle:
Another experiment I conducted was the combustion of a candle. I lit a candle and observed how it burned. This experiment allowed me to observe a chemical change as the wax in the candle reacted with oxygen in the air to produce water vapor, carbon dioxide, and heat. It also helped me understand the concept of combustion, where a substance reacts rapidly with oxygen to produce light and heat.
Conclusion:
Throughout this quarter, I have gained a deeper understanding of matter interactions. I have learned about the different states of matter, physical and chemical changes, and the properties of matter. Through various experiments and activities, I have been able to observe these concepts in action and reinforce my understanding. I am now able to recognize the different ways in which matter can interact with other matter and energy. Overall, this portfolio showcases my growth and learning in the area of matter interactions in Science 8.
Matter Interactions Portfolio
Science 8 Q1 / Matter Interactions
1 answer