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According to the law of conservation of mass, the number of atoms of the reactants and the products should be___
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
Which of the following determines the reactivity of an atom?
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
What subatomic particles are found inside the nucleus?
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
Change of state, such as water evaporating, is an example of____.
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
The element's identity can be determined by its ___
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
An element is dull, brittle, and not reactive. This element is a __
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
In an atom, the valence electrons can be found at ___
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
Sodium (Na) belong to Group 1, while Neon (ne), belong to group 18. Which element is more reactive?
Protons
Protons and Neutrons
Sodium
Equal
A physical change.
Valence Electrons
the outermost shell
Nonmetal
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