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Which particles in atoms have a negative electric charge?
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
A neutral solution has a pH of
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
One example of a chemical change is
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
Normal rainfall is slightly acidic, which means its pH must be
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
Which group contains the most elements?
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
Substances that CANNOT be broken down chemically into other substances are
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
The nucleus of an atom has a positive charge because the nucleus contains
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
The elements in a column of the periodic table
7
electrons
protons
elements
metals
burning paper
betwen 5 and 7
have similar properties
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