Which is an example of a liquid?

Which is an example of a liquid?

• A. Hydrogen
• B. Calcium Carbide
• C. Acetone
• D. Chlorine

Answer: (C)

At room temperature, substances can be solids, liquids, or gases. Acetone is a liquid because it has a boiling point around 56°C, so under typical room-temperature conditions it exists as a liquid with a definite volume and it flows to take the shape of its container. Hydrogen, with a boiling point about -253°C, is a gas at room temperature. Chlorine boils around -34°C, so it is also a gas at room temperature. Calcium carbide is a solid at room temperature, with a melting point far above ambient conditions.

At room temperature, substances can be solids, liquids, or gases. Acetone is a liquid because it has a boiling point around 56°C, so under typical room-temperature conditions it exists as a liquid with a definite volume and it flows to take the shape of its container. Hydrogen, with a boiling point about -253°C, is a gas at room temperature. Chlorine boils around -34°C, so it is also a gas at room temperature. Calcium carbide is a solid at room temperature, with a melting point far above ambient conditions.