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AP Biology Unit 1, AP Biology Unit 2 Study Guide with Complete Solutions $10.49   Add to cart

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AP Biology Unit 1, AP Biology Unit 2 Study Guide with Complete Solutions

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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...

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  • September 13, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • AP Biology
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AP Biology Unit 1, AP Biology Unit 2
Study Guide with Complete Solutions


Matter - Answer✔️✔️-Anything that takes up space and has mass.


Element - Answer✔️✔️-Substance that cannot be broken down to other substances

through chemical reactions. Each has a symbol. 92 occurring in nature.

Compound - Answer✔️✔️-Substance consisting of two or more different elements

combined in a fixed ratio.

*Characteristics different than those of its elements

CHON - Answer✔️✔️-4 elements essential to life

Trace Elements - Answer✔️✔️-Required by an organism only in minute quantities.

Atom - Answer✔️✔️-Smallest unit of matter that retains the properties of an element.

Composed of subatomic particles. Mostly empty space.

Subatomic particles - Answer✔️✔️-Neutrons, protons, electrons. Make up atoms.

Proton - Answer✔️✔️-One unit of positive charge. Approximately one dalton. Located in

nucleus.

Electron - Answer✔️✔️-One unit of negative charge. Located outside of nucleus.

Atomic Nucleus - Answer✔️✔️-Dense core packed with protons and neutrons.

Neutrons - Answer✔️✔️-Electrically neutral. Approximately one dalton.




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, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM


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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