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Atoms, Ions, Isotopes. Changing atoms. Element. Substance with a characteristic set of properties Examples?. Atom. • Smallest unit of an element that has all of its properties. Add or subtract a proton. What do you get?. Boron atom. Carbon atom. ►A new element.
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Atoms, Ions, Isotopes Changing atoms
Element • Substance with a characteristic set of properties • Examples?
Atom •Smallest unit of an element that has all of its properties
Add or subtract a proton • What do you get? Boron atom Carbon atom ►A new element
Add or subtract an electron • What do you get? • An ion • An ion is a particle with a charge because it has an unequal number of protons and electrons
Subtract an electron + Hydrogen Ion Hydrogen ►An ion with a positive charge because it has more protons than electrons
Add an electron - Fluorine Fluorine Ion ►An ion with a negative charge because it has more electrons than protons
Add or subtract a neutron • What do you get? • An isotope • An isotope is a particle with extra neutrons
Hydrogen isotopes Deuterium Hydrogen ►An isotope has a different number of neutrons
Add another atom • What do you get? • A molecule • A molecule is 2 atoms joined together with a bond