John says, “Solid particles don’t move at all.” Which statement best describes the motion of particles in a solid?
An atom of fluorine has atomic number 9 and mass number 19. What are the subatomic particles in F⁻?
Which subatomic particle has no electrical charge?
What is the number of neutrons in ³⁷₁₇Cl?
Which statement explains why solids have a fixed shape?
Water and ethanol are both liquids. John wonders why does ethanol evaporate faster?