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Which of these best describes a chemical change that happened to an iron rod?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
Jim has a sample of matter for which he wants to determine the chemical properties. What is the best experiment he can do to answer his question?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
Which of these is not a physical property?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
Which of the following is correct?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
How are freezing and condensation alike?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
Thermal energy can be transferred through empty space by
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
Which of the following will increase the rate at which a substance melts?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
What causes the particles of a substance to evaporate?
A chemical property cannot be observed without changing the substance.
determine its reactivity with an acid
The particles gain energy.
decreasing the pressure
flammability
The iron rod rusted.
Both occur when particles of matter spread apart.
radiation
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