Answer:
D
Explanation:
The electrons revolve around the nucleus and they contain negative charge
Answer
Sounds travel slowest in gasses so it would be air
Answer:Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points. In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.
Explanation:
