Equipment and Materials: measuring spoon, 2 beakers, sieve, 2 plastic containers
8 table spoons of sand, 100 mL of water 15 plastic gems.
Hypothesis: what do you think will happen with each mixture and why?
Based on the given equipment and materials, we can make two mixtures - one with sand and water, and another one with sand and plastic gems.
1. Mixture 1: Sand and Water
In this mixture, when you combine sand and water, you can expect the sand to sink to the bottom of the beaker due to its higher density compared to water. This is because sand particles are heavier and denser than water molecules. The water will form a layer on top of the sand. You might observe some water seeping through the sand, but the majority will stay on top. This separation is due to the difference in density between the two substances.
2. Mixture 2: Sand and Plastic Gems
When you mix sand with plastic gems, you can anticipate a different outcome compared to the sand and water mixture. Since both sand and plastic gems have similar densities, they will not easily separate from each other. Instead, you will likely have a mixture where the sand and plastic gems are evenly distributed throughout the beaker. The sand and gems will likely be physically intertwined and form a heterogeneous mixture.
To test these hypotheses, follow these steps:
1. Take one of the beakers and add 8 tablespoons of sand to it.
2. Add 100 mL of water to the beaker.
3. Stir the mixture gently to ensure proper mixing.
4. Observe the behavior of the sand and water mixture. Note the position of the sand and water layers, and any seepage of water through the sand.
5. Rinse the beaker thoroughly to remove any residue.
6. Take the other beaker and add 8 tablespoons of sand to it.
7. Add 15 plastic gems to the beaker containing sand.
8. Stir the mixture gently to distribute the sand and gems evenly.
9. Observe the resulting mixture and note the physical appearance. Pay attention to whether the sand and gems mix or separate from each other.
By conducting these experiments and making observations, you can compare the actual outcomes to your initial hypotheses.