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bio
Matter
Anything with mass and occupies space.
Element
Made of one type of atom.
Compound
Made of 2 or more elements.
Atom
Smallest unit of matter.
Nucleus
Contains protons and neutrons.
Electron cloud
Area around nucleus with electrons.
Periodic Table
Organizes elements by properties.
Valence electrons
Electrons on outer energy level.
Isotopes
Atoms with same protons, different neutrons.
Ions
Charged atoms.
Bond
Force holding 2 atoms together.
Ionic bond
Transfer of electrons between atoms.
Covalent bond
Sharing electrons between atoms.
Macromolecules
Large molecules in cells.
Organic Macromolecules
Contain carbons.
Monomer
Small subunit of a molecule.
Polymer
Made of many monomers.
Condensation
Joining by removing water.
Hydrolysis
Splitting by adding water.
Carbohydrates
Contain C, H, O.
Lipids
Nonpolar molecules like fats.
Proteins
Polymers of amino acids.
Enzymes
Proteins speeding up reactions.
Acids and Bases
Hydrogen Bond
Weak attraction between polar molecules.
Note
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