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Biochemistry Study test Questions with 100% Correct Solutions

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Biochemistry Study test Questions with 100% Correct Solutions

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Biochemistry Study test Questions with 100%
Correct Solutions
Matter

Anything that has mass and/or takes up space (volume)

Element

A substance that cannot be broken down into other substances by chemical reactions

Molecule

Any combination of atoms

Compound

Two or more different elements combined in a fixed ratio

Atom

Smallest unit of matter that retains the properties of an element

Atomic Number

Number of protons

Mass Number

Number of protons plus neutrons

Atomic Weight

1 mole of a sustance = atomic weight in grams

Isotope

Atom with an abnormal number of neutrons

, Proton

Positively charged subatomic particle

Neutron

Subatomic particle with no charge

Electron

Negatively charged subatomic particle

Valence Electron

Outermost electrons in an atom

Covalent Bond

Sharing of electrons (Two non-metals)

Ionic Bond

Electrostatic attraction of positive and negative ions (Metal and Non-metal)

Valence shell

An atom's outermost electron shell

Polar Covalent Bond

Unequal sharing of electrons due to difference in electronegativity

Cation

Positively charged ion

Anion

Negatively charged ion

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