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Which phase change is exothermic?
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
The length of a cube is 5 cm. What is the density of the cube if it's mass is 5 g?
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
Burning of methane gas produces water and carbon dioxide to cause a
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
Sugar is an example of a(n)
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
Which chemical formula represents a molecule and a chemical compound? (assume the numbers are subscripts)
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
Salt dissolving in a glass of water is known as a
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
Boiling point, melting point, and freezing point are all considered to be
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
Which of the following formulas represent a molecule but not a compound? (assume the numbers are subscripts)
H2O
condensation
physical properties.
chemical change.
O2
5 g/cm3
physical change.
compound
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