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Chemistry vocab

core chemistry words to know

TermDefinition
Matter anything that takes up space and has mass
Physical Properties properties that help identify a substance that stays the same, like color, texture, shape, hardness, mass, volume, sound, density, size, smell, taste
Phases or States of Matter solid, liquid, gas
Solid particles are close, with definite volume and shape, and move slow
Liquid particles are farther apart, have definite volume, but not definite shape, and move faster
Gas particles are far apart, have no definite shape or volume, and move fast
Particle Theory of Matter all matter is made of particles; particles of a certain substance are all the same; particles are attracted together; and move all the time
Element basic substance of matter; can't be changed by chemical process, heating, or electricity
Atom building block of elements (made of negative electrons, positive protons, and no charge neutrons)
Periodic Table chart that shows all the elements, organized by certain properties
Molecule smallest part of a compound
Compound a substance with more than one kind of element, like water...H2O
Chemical Symbol abbreviation for an element
Chemical Formula abbreviation for a compound (numbers show how many atoms)
Physical Change properties change, but the substance stays the same
Chemical Change changes into a new substance
Mixture two or more substances around each other mixed, but not chemically joined
Solution one substance dissolved in another
Chemical Equation reaction equation with symbols and elements (reactants --> products)
Organic Compounds contain carbon, the building blocks of molecules necessary for life
Inorganic Compounds don't contain carbon, nonliving things (water and minerals)
Protein complex molecule, long amino acid chains, build and repair body, protect from disease, and speed chemical reactions (C-H-O-N)
Carbohydrates give energy and store it, simple sugars, and complex starches (C-H-O)
Lipids fats, don't mix with water, give energy and store it, only used when no carbs & twice the energy
Nucleic Acids large molecule, stores and processes information in cells to do activities, DNA stores and copies, RNA carries copied message
Created by: jpeteric