Question

properties of matter / states of matter
(reference states of matter)

gas
the molecules have ____________ and
are ____________ off each other.

liquid
the molecules are ____________
________ and __________ past each other.

solid
the molecules are ____________
in a constant ____________ state.

Explanation:

For the "Gas" row: In a gas, molecules have a lot of energy (kinetic energy) and are far apart from each other, moving freely. So the blanks can be filled with "a lot of energy (or high kinetic energy)" and "far".
For the "Liquid" row: In a liquid, molecules are close together (compared to gas) and can slide past each other. So the blanks can be filled with "close together" and "slide".
For the "Solid" row: In a solid, molecules are closely packed and in a constant (fixed) position (or vibrating in place). So the blanks can be filled with "closely packed" and "position (or vibrating)".

Answer:

• Gas: The molecules have \(\boldsymbol{\text{a lot of energy (high kinetic energy)}}\) and are \(\boldsymbol{\text{far}}\) off each other.
• Liquid: The molecules are \(\boldsymbol{\text{close together}}\) and \(\boldsymbol{\text{slide}}\) past each other.
• Solid: The molecules are \(\boldsymbol{\text{closely packed}}\) in a constant \(\boldsymbol{\text{position (vibrating)}}\) state.