Which term best describes the materials that make up rocks? a. sand left by erosion b. different kinds of crystals c. layers of minerals d. compressed magma

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?