1. What are the wavelike contractions of smooth muscle that move food down the esophagus
called?

This drawing shows a human body system. what is the primary function of this body system?

Particles vibrate in a rigid structure and do not move relative to their neighbors.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.