Liquid - A) particles that slide past one another
In a liquid, the particles are close together but have enough energy to move and slide past one another. This allows the liquid to take the shape of its container. Think of pouring water into a glass - it takes the shape of the glass but still stays together as a liquid.
Plasma - C) an ionized gas of positively and negatively charged particles
Plasma is a unique state of matter that occurs at extremely high temperatures. It is often found in stars, lightning, and fluorescent lights. In plasma, the atoms become ionized, meaning they lose or gain electrons, resulting in positively and negatively charged particles.
Solid - B) particles packed closely together that vibrate in place
Solids have tightly packed particles that vibrate in place. The particles are held together by strong forces, which is why solids have a fixed shape and volume. Examples of solids include a rock or a piece of wood.
Gas - D) particles spread far apart that move around freely
Gases have particles that are spread far apart and move around freely. They have no fixed shape or volume, and they fill the space they are in. Examples of gases are air, oxygen, and carbon dioxide.