The substance that Lisa places into the jar is a solid because it did not change shape to match the shape of the jar.
What is matter?
Matter refers to any substance that have weight and occupies space. Matter can exist in three states as follows:
The particles that make up the solid state of matter are so rigid and compact that they cannot move while the particles of the liquid are not tightly packed, hence, can slide past one another.
The particles of liquid and gases are flexible i.e. not tightly packed and will take the shape of any container they are placed.
Therefore, the substance that Lisa places into the jar is a solid because it did not change shape to match the shape of the jar.
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