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True or False: Phase Change is a CHEMICAL change.
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
One of the most influential factors in determining an element's reactivity is _______________.
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
In a covalently bonded molecule, the electrons between elements are
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
All of the following are clues that a chemical change has occurred except for ________________
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
Which of the following statements does not apply to a compound?
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
Which of these substances is a compound?
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
A scientist waters plants different amounts and measures their growth. The growth is the
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
Which of the following represents a chemical change?
dependent variable
nail rusting
it can be separated into components by physical methods
water
shared between the atoms.
how many valence electrons it has.
False
mass changes
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