Chapter 0f Flashcards
- occurs when a substane is converted into one or more substances with different formulas and different properties
- may be observed by formation of bubbles, change in color, production of solid, or heat that is produced or absorbed
chemical change
separates reactant from products
arrow
written on left side of arrow
reactants
written on right side of arrow
products
separate multiple reactants or products
+
indicates heat is used to start reaction
delta (∆)
physical states
- solid (s)
- liquid (l)
- gas (g)
- aqueous (aq)
dissolved in water
aqueous (aq)
balanced chemical equation
no atoms are lost or gained
what is used during combustin
oxygen in air
Types of Reactions
- combination reactions
- decomposition reactions
- single replacement reactions
- double replacement reactions
- combustion reactions
- two or more elements form one product
- simple compounds combine to form one product
combination reaction
one substance splits into two or more simpler substances
decomposition reaction
one element take the place of a different element in another reacting compound
single replacement reaction
positive ions in the reactant compounds switch places
double replacement reaction
- carbon-containing compound burns in oxygen gas to form carbon dioxide and water
- energy is released as a product in the form of heat
combustion reaction