Chapter 6: Physical and Chemical Change Flashcards
what is physical change?
A change which does not alter the chemical composition of a substance
what is chemical change?
And change that alters the chemical composition of a substance
True/false: physical changes are fairly easy to reverse while chemical changes are much harder or impossible to reverse
True
what is the equation for converting Celsius to Fahrenheit?
F= 9/5(C)+32
what are the three phases?
solid, liquid, and gas
True/false: phase changes are not physical changes
False
True/false: volumes are not necessarily additive, but mass is
True
State the kinetic theory of matter
The molecules or atoms that make up a substance have space in between them and they are in a constant random motion. The hotter the substance, the faster the motion.
what are formation reactions?
A reaction in which two or more elements react together to form a single compound
what is a decomposition compound?
A reaction in which the only reactant is a compound, and the products are the elements from which the compound is made
what is a single displacement reaction?
Reaction in which one element or ion in a compound is replaced by a different element or ion
what is a double displacement reaction?
Reaction in which two elements or ions in two different compounds switch places, each becoming part of the other compound
what is a combustion reaction?
The process by which a chemical reacts with oxygen to form one or more products as well as heat, and usually light
what is a complete combustion reaction?
combustion reaction in which the only products are carbon dioxide and water
what is incomplete combustion?
A combustion reaction in which carbon monoxide and or chemical carbon are formed in addition to water
