- Particles in a liquid flows past each other
- Particles in a liquid are close to each other
- Therefore, particles in a liquid are close and can flow past each other

- Particles in a liquid are close and can flow past each other
- The particles in the substance are close and able to flow past each other
- Therefore, the substance could be in liquid phase

- The substance has a variable shape
- Matter in the liquid phase has variable shape
- Hence, the substance could be in liquid phase or gas phase

- The substance could be in liquid phase
- The substance could be in liquid phase or gas phase
- Hence, the substance can only be in liquid phase

So, the substance can only be in liquid phase
Question
A student describes a substance as lacking a definite shape. The description also states that the particles of matter are close to each other but still able to flow past each other. Which type of substance is the student most likely describing?

Context
- Particles in a liquid flows past each other 
- The particles in the substance are close and able to flow past each other 
- The substance has a variable shape 
- Matter in the liquid phase has variable shape 
- Particles in a liquid are close to each other