chapter 6 Flashcards
physical property
characteristic of a substance that can be observed without changing the substance into another substance
chemical property
characteristic that describes a substance’s ability to change into other substances
physical change
any change that alters the form or appearance of a substance but doesn’t change the substance into another substance
chemical change
change in matter that produces one or more new substances
reactants
substances that undergo changes in a chemical reaction
products
new substances formed by the reaction
precipitate
solid that forms from solution during a chemical reaction
endothermic reaction
total amount of bonds breaking and being created resulting in net absorption of energy
exothermic reaction
total amount of bonds breaking and being created resulting in net release of energy
chemical equation
short easy way to show chemical reactions using symbols
conservation of matter
principle that states during chemical reactions, matter isn’t created nor destroyed
open system
system where matter can enter from or exit into the system’s surroundings
closed system
system where matter can’t enter from or exit into the system’s surroundings
coefficient
the number placed in front of a chemical formula in an equation
synthesis
when two or more elements or compounds combine to make more complex substances
decomposition
when compounds break down into simpler products
replacement
when an element replaces another in a compound or when 2 elements in different compounds trade places
