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Vocabulary for Module #5 Apologia

Exactly what the title says! :)
STUDY
PLAY
Matter
Anything that has mass and takes up space
Model
An explaination or representation of something that cannot be seen
Element
A collection of atoms that all have the same number of protons
Molecules
Chemicals that result from atoms linking together
Physical change
A change that affects the appearence but not the chemical makeup of a substance
Chemical change
A change that alters the makeup of the elements or molecules of a substance
Phase
One of three forms- solid, liquid, or gas- which every substance is capable of attaining
Diffusion
The random motion of molecules from an area of high concentration to an area of low concentration
Concentration
A measurement of how much solute exists within a certain volume of a solvent
Semipermeable membrane
A membrane that allows some molecules to pass through but does not allow other molecules to pass through
Osmosis
The tendency of a solvent to travel across a semipermeable membrane into areas of higher soulte concentration
Catalyst
A substance that alters the speed of a chemical reaction but is not used up in the process
Organic molecule
A molecule that contains only carbon and any of the following: Hydrogen, oxygen, nitrogen,sulfur, and/or phosphorous
Biosynthesis
The process by which living organisms produce larger molecules from smaller ones
Isomers
Two different molecules that have the same chemical formula
Monosaccharides
Simple carbohydrates that contain 3 to 10 atoms
Disaccharides
Carbohydrates that are made up of two monosaccharides
Polysacchrides
Carbohydrates that are made up of more than two monosaccharides
Dehydration reaction
A chemical reaction in which molecules combine by removing water
Hydrolysis
Breaking down complex molecules by the chemical addition of water
Hydrophobic
Lacking any affinity to water
Saturated fat
A lipid made from fatty acids that have no double bonds between carbon atoms
Unsaturated fat
A lipid made from fatty acids that have at least one double bond between barbon atoms
Peptide bond
A bond that links amino acids together in a protein
Hydrogen bond
A strong attraction between hydrogen atoms and certain other atoms (usually oxygen or nitrgoen) in specific molecules