Chapter 2 and 3 Flashcards
Vocab: element
Cannot be broken into different substances
Vocab: atom
Smallest unit of an element broken down into different substances
Vocab: compound
A substance made up of 2 or more different elements that chemically combine
Vocab: molecule
Smallest unit of a substance that keeps all physical and chemical properties of a substance
Vocab: mixture
A mix of many pure substances
Vocab: Heterogeneous
Substances are mixed uniformly
Vocab: Homogeneous
Same through out
Vocab: energy
The capacity to do work
Vocab: temperature
A measure of average kinetic energy
Vocab: Thermal energy
The kinetic energy (KE) of a substances atom
Vocab: Conservation of mass
Mass cannot be created or destroyed
Vocab: conservation of energy
Energy cannot be created or destroyed
Vocab: Melting
Change of a substance from a solid to a liquid
Vocab: Freezing
A change of a substance from a livid to a solid
Vocab: evaporation
Change of a substance from a liquid to a gas