AP Biology Unit 1, AP Biology Unit 2 Study Guide with Complete Solutions
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Grado
AP Biology
Institución
AP Biology
AP Biology Unit 1, AP Biology Unit 2
Study Guide with Complete Solutions
Matter - Answer️️ -Anything that takes up space and has mass.
Element - Answer️️ -Substance that cannot be broken down to other substances
through chemical reactions. Each has a symbol. 92 occurring in nature.
Com...
Atomic Number - Answer✔️✔️-The number of protons (which is unique to that element)
and written as a subscript to left of element symbol. Also tells us number of electrons
since P=E if atom is neutral
Mass Number - Answer✔️✔️-Sum of the protons and the neutrons. An approximation of
the atomic mass.
Isotopes - Answer✔️✔️-Same number of protons, but different number of neutrons and
therefore different mass. Same element.
Radioactive Isotope - Answer✔️✔️-One in which the nucleus decays spontaneously,
giving off particles and energy. Can decay to a different element. Have useful
applications.
Energy - Answer✔️✔️-Capacity to cause change
Potential Energy - Answer✔️✔️-Energy matter possesses because of its location or
structure. Electrons have this based on distance from nucleus.
Electron Shells - Answer✔️✔️-Where electrons are found, each with characteristic
average distance and energy level. Electrons can change these by absorbing or losing
energy.
Valence Electrons - Answer✔️✔️-Electrons in the outermost shell.
Chemical Bonds - Answer✔️✔️-The attraction that holds atoms together during an
interaction.
Covalent Bond - Answer✔️✔️-Sharing of a pair of valence electrons by two atoms.
Molecule - Answer✔️✔️-Two or more atoms held together by covalent bonds.
Single Bond - Answer✔️✔️-One pair of shared electrons.
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