A student placed a solid in a liquid, which produced the results shown in the following diagram. solid: 20°C
OOO
gas bubbles
liquid: 20°C
1
2
Which of the following MOST likely took place?
A. a chemical reaction
chemical
o
O B. a phase change
C. a nuclear reaction
D. a destruction of mass

The concentration of ionic substances is important for the heart to beat. your heart responds to electrical impulses that travel through heart cells that are made up mostly of water. which properties of ionic compounds are important to support this function? solubility in water conductivity crystalline melting point