In this science class that galaxies consist of gas, dust, and many planets. What is the most important component of galaxien Joaquin is missing in his description? comets
Star

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.