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Biology 111 Exam 1- TAMU Questions And Answers 100% Solved | 100% Pass
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Biology 111 Exam 1- TAMU Questions And Answers 100% Solved | 100% Pass
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Biology 111 Exam 1- TAMU Questions AndAnswers 100% Solved | 100% Pass
Atom - ✔✔The smallest unit of matter that still retains the properties of an element.
Atomic Mass - ✔✔An approximation of the total mass of an atom; measured in daltons.
Atomic Nucleus - ✔✔A dense core at the center of an atom containing protons and neutrons.
Atomic Number - ✔✔The number of protons in an element; written as a subscript.
Cation - ✔✔A positively charged ion.
Chemical Bond - ✔✔An attraction that holds atoms together.
Compound - ✔✔A substance consisting of two or more different elements combined in a fixed ratio.
Covalent Bond - ✔✔The sharing of a pair of valence electrons by two atoms.
Dalton - ✔✔Also known as "Atomic Mass Unit"; used to measure the mass of subatomic particles.
Electron - ✔✔A negatively charged subatomic particle.
Electron Shells - ✔✔Levels of differing energy in the electron cloud.
, Electronegativity - ✔✔The attraction of a particular atom for the electrons of a covalent bond; the
thirstiness of an atom.
Element - ✔✔A substance that cannot be broken down to other substances by chemical reactions.
Energy - ✔✔The capacity to cause change.
Energy Level - ✔✔Another name for an electron shell.
Hydrogen Bond - ✔✔The non-covalent attraction between a hydrogen atom and an
electronegative atom; weak chemical bond.
Ion - ✔✔A charged atom.
Ionic Bond - ✔✔Chemical bond that occurs as a result of the transfer of an electron between
two elements; usually present between a metal and a nonmetal.
Ionic Compounds - ✔✔Compounds formed by Ionic Bonds; also known as salts.
Isotope - ✔✔Different atomic forms of the same element; has more or less neutrons than usual.
Mass Number - ✔✔The sum of neutrons and protons in an atom; written as a superscript.
Matter - ✔✔Anything that has mass and takes up space.
Molecular Formula - ✔✔A formula giving the number of atoms of each of the elements present in
one molecule of a specific compound.
Molecule - ✔✔Two or more atoms held together by covalent bonds.
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