For the hypothetical compound AX3, which statement is true? (Need help ASAP)

A is a metal from Group 3A, and X is a nonmetal from Group 7A.

A is a metal from Group 1A, and X is a metal from Group 7A.

A is a nonmetal from Group 3A, and X is a metal from Group 1A.

A is a metal from Group 3A, and X is a nonmetal from Group 5A.

Why doesn't heat added to water make the tempature rise above 100c

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

Movement that is like a t a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. transfers energy from one location to another a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave