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13. Explain the importance of the freezing point of water and
the boiling point of water.
14. Differentiate the properties of water in its solid, liquid, and
gaseous states.
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Vocabulary
Celsius (°C) unit of measurement for temperature based
on the freezing point of water at 0 °C and the
boiling point of water at 100 °C
Degree unit of measurement used to express how
hot or cold something is
Fahrenheit (°F) unit of measurement for temperature based
on the freezing point of water at 32 °F and
boiling point of water at 212 °F
Temperature measure of how hot or cold something is
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SCIENCE AND TECHNOLOGY STD 4.indd 58
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