Matter with definite weight and volume but no definite shape is called:

• A. Organic
• B. Gas
• C. Solid
• D. Liquid

Answer: (D)

When matter has a definite amount and a definite space it occupies but no fixed shape, the behavior of its particles is characteristic of a liquid. Liquids keep a constant volume because the particles are close enough to stay together, yet they flow and take the shape of their container, so their shape isn’t fixed. That combination—definite volume and no definite shape—is why this is a liquid.

The other options don’t fit this pattern. An organic substance refers to a broad category of carbon-based compounds, not a state of matter. A gas has neither a fixed shape nor a fixed volume, as it expands to fill whatever space is available. A solid has both a definite shape and a definite volume, so it doesn’t match the description.