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Boiling, Freezing, Boiling, Freezing, and Melting Water and Melting Water Using the Celsius scale Using the Celsius scale

Boiling, Freezing, and Melting Water

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Freezing Point Water freezes at 0 degrees Celsius. As temperatures drop into the negatives, water continues to freeze and harden. Temperatures in the Arctic can drop to as low as -89° Celsius! Any temperature below 0° Celsius keeps the water freezing.

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Page 1: Boiling, Freezing, and Melting Water

Boiling, Freezing, and Boiling, Freezing, and Melting WaterMelting Water

Using the Celsius scaleUsing the Celsius scale

Page 2: Boiling, Freezing, and Melting Water

Freezing Point Freezing Point Water freezes at 0 degrees Celsius.Water freezes at 0 degrees Celsius. As temperatures drop into the As temperatures drop into the

negatives, water continues to freeze negatives, water continues to freeze and harden.and harden.

•Temperatures in the Arctic can drop to as low as -89° Celsius!•Any temperature below 0° Celsius keeps the water freezing.

Page 3: Boiling, Freezing, and Melting Water

Melting PointMelting Point The melting point for water is 0The melting point for water is 0°

Celsius. As temperatures continue to rise,

water continues to melt.

Page 4: Boiling, Freezing, and Melting Water

Don’t get confused!Don’t get confused! Water’s freezing point Water’s freezing point

and melting point and melting point are are bothboth at 0 at 0° Celsius.

Just ask yourself, “Is the temperature getting warmer or colder?”

Page 5: Boiling, Freezing, and Melting Water

Freezing vs. MeltingFreezing vs. Melting Freezing occurs when enough heat is Freezing occurs when enough heat is

removed to cause a phase change.removed to cause a phase change.

Melting occurs when enough heat is added Melting occurs when enough heat is added to cause a phase change from solid to to cause a phase change from solid to liquid.liquid.

FUN FACT:FUN FACT: Sometimes the difference in Sometimes the difference in temperature between ice and liquid water temperature between ice and liquid water may be 1 degree Celsius!may be 1 degree Celsius!

Page 6: Boiling, Freezing, and Melting Water

Boiling Point of WaterBoiling Point of Water The boiling point of water is at 100° The boiling point of water is at 100°

Celsius. Celsius. Evaporation occurs at a very rapid pace from this point…