5th Grade: This week, we read about how solids dissolve, and what is happening on a particle level. We also will identify a substance based on how much can dissolve in water (also known as its solubility).
- What happens when a solid dissolves? (The water molecules break up the solid molecules)
- How did we identify the mystery substance? (We saw how much could dissolve, and compared it to a list of known substances and there saturation points.)
4th Grade: This week, we did a fun activity that showed that the force between magnets decreases the further they get apart. We used balances to see how many washers the force of two magnets could hold. The number of washers required to break the force between the magnets decreased as the space between the magnets increased. We also graphed our results, which was a great way to integrate math concepts in a practical way!
- How many washers could the scale hold when the magnets where together? (Usually 15+)
- What happened to this number as we added plastic chips between the magnets ? (The number decreased with each chip, usually getting as low as 3 washers with 6 chips.)
No comments:
Post a Comment