Matter and Atoms

The diagram below shows the motion of some aluminum atoms before and after a phase change. What phase change has occurred?

What is the phase that goes directly from a solid to a gas?

What is the negatively charged particle that is found in energy levels or the cloud surrounding the nucleus?

The number of electrons in a balanced or neutrally charged atom is the same as the ___________________.

Which model above most closely represents a state of matter where particles are densely packed and would only vibrate?

This model most closely represents an ionized gas (charged particles)?

The average distance between molecules always increases during which of the following phase changes.

Rank the states of matter from weakest to strongest in terms of intermolecular forces (bonding energy)

Charlie works in a steel mill. Scraps of recyclable metal come in and are melted down. This melted metal is then poured into forms and allowed to harden into steel beams used to build skyscrapers. Which of the following describes the changes in state of matter that the metal goes through in the steel mill?

Which model is the far right most closely representing?