The phase (solid, liquid, or gas) of a substance depends on its temperature and pressure.
The normal melting point of a substance is the temperature at which a substance melts at atmospheric pressure.
The normal boiling point of a substance is the temperature at which the substance boils at atmospheric pressure.
The normal melting point of a substance is the temperature at which a substance melts at atmospheric pressure.
At temperatures below the normal melting point, the substance is a solid.
Water is solid (ice) at temperatures below its freezing point (0 °C).
At temperatures above the normal melting point, the substance is a liquid.
Water is solid (ice) at temperatures below its freezing point (0 °C).
At temperatures above the normal melting point, the substance is a liquid.
The normal boiling point of a substance is the temperature at which the substance boils at atmospheric pressure.
At temperatures below the normal boiling temperature and above the normal melting temperature, the substance is a liquid.
Water is liquid at atmospheric pressure between 0 °C and 100 °C.
At temperatures above the normal boiling temperature, the substance is a gas.
Water exists as steam above 100 °C.
The information above is summarised both in words and pictures below.Water is liquid at atmospheric pressure between 0 °C and 100 °C.
At temperatures above the normal boiling temperature, the substance is a gas.
Water exists as steam above 100 °C.
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| solid | melting temperature  | liquid | boiling temperature | gas |