15 terms

Roten's 8th Grade Physical / Chemical Properties and Changes

physical property
a quality or condition of a substance that can be observed or measured without changing the substance's composition
chemical property
a characteristic that cannot be observed without altering the substance
physical change
one in which the form or appearance of matter changes, but not its composition
The change of state from a liquid to a gas
The change of state from a gas to a liquid
(chemistry) a change directly from the solid to the gaseous state without becoming liquid
change of state from a gas directly to a solid
chemical change
a change that produces matter with a different composition than the original matter
law of conservation of mass
the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
a solid that separates out of a solution during a chemical change
a process in which substances mix evenly with one another
The makeup of a material. A material formed from two or more substances.
Antoine Lavoisier
Often known as the father of Chemistry. He proposed the Law of Conservation of mass and discovered some gasses.
examples of chemical changes
Cooking, body process, bubbling, souring, rusting, rotting, evolution of light & heat, production of gas, formation of precipitate (insoluble solid), and odor changes
examples of physical changes
1. sawing wood, 2. shedding paper, 3. melting wax, 4.grating a potato, 5. hammering copper, 6. carving gemstones, breaking, dissolving, freezing, melting, evaporating, condensing, shaping, cutting,