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A marshmallow is made mostly of sugar and air. When heated in a microwave oven, a marshmallow increases in size to nearly twice its normal volume but does not produce any new substance.
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
Liquids placed in a beaker will settle in specific layers. Which physical property of matter does this illustrate?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
A sea creature releases a liquid into the ocean that reacts with the water to form a seashell. Which process does this represent?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
Which best describes the type of change that occurs when liquid water freezes to become ice?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
Which best describes a substance that changes from a liquid to a solid?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
When water boils, water vapor is produced and escapes into the air. Which best describes this change?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
Which most likely indicates formation of a precipitate during the reaction of two liquids?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
Which is represented when liquid water becomes a gas at 100°C?
physical change
The substance undergoes a physical change.
precipitate formation
physical change in which the ice is less dense than the liquid water
solubility of water
density
a solid appearing in the liquid
The heated air expands as a physical change occurs.
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