Students are in the midst of Unit 4 Molluscs busily learning about the different classes of Molluscs and trying to learn a variety of sea shells.
Today's cool mollusc was the chiton, an odd mollusc that has 8 plates held together by its mantle. The chiton can be found on the rocky coast and it has great suction to stay put. When pulled off a rock, it can roll into a ball to protect its squishy parts. More info can be found here.
Students also learned the four major classes of bivalves - clams, mussels, oysters, and scallops. Bivalves have 2 shells and 2 siphons, as well as adductor muscles to help keep their shells from opening for hungry predators.
VSEPR - Valence Shell Ectron Pair Repulsion Theory
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Valence Shell Electron Repulsion Theory
Electrons do not like each other and when looking at molecular structures -
electrons and unshared electrons (the t...
6 years ago
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