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All 8 questions. After you submit, each question shows the right answer and why. Back to the quick check
Which state of matter spreads out to fill its whole container?
Ice, liquid water and steam are all the same substance, H₂O.
What happens to the particles of a substance when you heat it?
Water always boils at exactly 100 °C, wherever you are.
Butane is a gas at room temperature, yet the butane inside a disposable lighter is a liquid. Why?
Chlorine melts at −101.5 °C and boils at −34.04 °C. What state is chlorine in at −60 °C?
Bromine is a liquid and iodine a solid at room temperature, although both are halogens like chlorine (a gas). Explain this in terms of intermolecular forces and kinetic energy.
Water's critical point is about 647 K and 220.64 bar. What happens to the distinction between liquid and gas beyond the critical point, and what is the resulting phase called?
