Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
matter
|
anything that has mass and takes up space
|
|
|
model
|
an explanation 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 appearance 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 measure of how much solute exists within a certain volume of 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 in areas of higher solute 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 phosphorus
|
|
|
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 carbon atoms
|
|
|
disaccharides
|
carbohydrates that are made up of two monosaccharides
|
|
|
polysaccharides
|
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 double bonds between carbon atoms
|
|
|
unsaturated fat
|
a lipid made from fatty acids that have no double bonds between carbon 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 nitrogen) in specific molecules
|
