Exam 3 Flashcards
Absolute zero
The temperature at which all motion stops; a value of 0 on the Kelvin scale
Barometer
an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
Combination
A chemical reaction in which two or more substances react to form a single substance
Combustion
Oxygen reacts
H20 and CO2 are products
Condensation
An exothermic process in which a gas or vapor is changed to a liquid or solid
A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds. These reactions often involve an energy source such as heat, light, or electricity that breaks apart the bonds of compounds.
Decomposition
Deposition
The direct solidification of a vapor by cooling; the reverse of sublimation.
Double replacement
A chemical reaction in which two compounds react and exchange partners to form two new compounds
A reaction that ABSORBS heat
Endothermic
An endothermic process in which a liquid is changed to a gas; also called vaporization
Evaporation
A reaction that RELEASES heat
Exothermic
(of a liquid) be turned into ice or another solid as a result of extreme cold.
“in the winter the milk froze”
Freezing
The result of attractive dipolar forces between molecules in which hydrogen atoms are covalently bonded to electronegative elements (O,N or F)
Hydrogen bond
The energy a particle has as a result of its motion KE=1/2mv^2
Kinetic
Melting
The temp at which a solid changes to a liquid and they both have equal vapor pressure