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;
19 Cards in this Set
- Front
- Back
|
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
|
|
|
solution
|
a mixture of one substance dissolved in another
|
|
|
solute
|
the substance being dissolved (usually the smaller amount)
|
|
|
solvent
|
the substance doing the dissolving (usually the larger amount & often a liquid)
|
|
|
diffusion
|
the random motion of molecules from an area of high concentration to an area of low concentration
|
|
|
concentration
|
a measurement of how much substance exists within a certain volume
|
|
|
osmosis
|
the tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration
|
|
|
semipermeable membrane
|
a membrane that allows some molecules to pass through but does not allow other molecules to pass through
|
|
|
chemical reaction
|
when one or more chemicals react to make one or more new chemicals (BOOM!)
|
|
|
balanced chemical reaction
|
when the total atoms on the left side of the arrow are the same as the total atoms on the right side of the reaction
|
|
|
reactants
|
the molecules at the beginning of the reaction (left side of the arrow)
|
|
|
products
|
the molecules produced as a result of the chemical reaction (right side of the arrow)
|
|
|
photosynthesis
|
the process by which autotrophic organisms produce their own food
|
|
|
carbon dioxide and water
|
reactants of photosynthesis
|
|
|
glucose and oxygen
|
products of photosynthesis
|
|
|
catalyst
|
a substance that alters the speed of a chemical reaction but does not get used up in the process
|
|
|
chlorophyll
|
the catalyst of most photosynthetic reactions
|
