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Tearing paper into pieces is an example of what kind of change?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
Which process is an example of a chemical change?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
Which observation is a sign of a chemical change?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
A beaker containing ice and water is placed on a warm hotplate. What type of change would you expect the ice to undergo?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
Which of the following types of changes does not observe the law of conservation of mass?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
Chemical changes result in new substances with new physical properties. Purely physical changes do not result in new substances. Which process is an example of a chemical change?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
Baking bread is an example of what kind of change?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
There are several differences between chemical and purely physical changes. Which process is an example of a chemical change?
burning wood
a metal railing rusting in damp weather
chemical change
cooking a steak
A rotting potato gives off a bad smell.
only nuclear changes
a physical change
a purely physical change because it will change state
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