During the last few weeks we have been conducting science experiments to expand our understanding about matter. We have been learning about the scientific process. Each experiment has started with a question, we make a hypothesis and record the materials we will use. We plan out the experiment in steps and record what happens. Finally we record our conclusion in order to answer our original question.
Experiment 1) In which liquid will the marble fall fastest? We tested out the viscosity of different liquids. We put four different liquids in to test tubes and dropped a marble into each tube at the same time. We watched to see which marble fell the fastest and which fell the slowest. We found out that not all liquids are the same. Some liquids have a higher viscosity - they are harder to pour and thicker. |
Experiment 2) Is it a solid or a liquid?
Our second experiment was to help us understand how molecules perform in different states of matter. We mixed together cornstarch (a solid) and water (a liquid). With the correct amount of each we were able to create a substance that had the properties of both states of matter. When we squeezed the substance it acted like a solid, when we stopped squeezing it went back to a liquid.
Our second experiment was to help us understand how molecules perform in different states of matter. We mixed together cornstarch (a solid) and water (a liquid). With the correct amount of each we were able to create a substance that had the properties of both states of matter. When we squeezed the substance it acted like a solid, when we stopped squeezing it went back to a liquid.
Experiment 3) How can mixing these ingredients change the state of matter?
Our third experiment was to help us learn how temperature and energy can change the state of matter. We mixed milk, cream, sugar and vanilla extract together in a small bag. We mixed ice and salt in a big bag. We placed the small bag inside the big bag and shook it. The salt lowered the ice's freezing point, and this mixture lowered the temperature of the cream mixture. We all enjoyed making our own homemade ice cream.
Our third experiment was to help us learn how temperature and energy can change the state of matter. We mixed milk, cream, sugar and vanilla extract together in a small bag. We mixed ice and salt in a big bag. We placed the small bag inside the big bag and shook it. The salt lowered the ice's freezing point, and this mixture lowered the temperature of the cream mixture. We all enjoyed making our own homemade ice cream.