Vocab. Properties and Change Flashcards
Physical Property
A characteristic of a substance that does not involve a chemical change
Chemical Property
A property of matter that describes a substance’s ability to participate in a chemical reaction
Electrical Conductivity
A measurement of how easily a material allows electric current to flow through it (physical property)
Density
The ratio of the mass of a substance to the volume of the substance
(physical property)
Thermal Conductivity
The ability of a material to conduct heat from its one side to the other
(physical property)
Solubility
The ability of one substance to dissolve into another (physical property)
Hardness
The ability of a material to resist fracture, deformation, or permanent indentation
Boiling Point
The temperature at which a liquid changes into a gas (physical property)
Luster
Materials with a shiny surface (physical property)
Melting Point
The point at which materials change from a solid to a liquid (physical property)
Malleability
The ability for a metal to be formed into a variety of shapes (physical property)
Magnetism
The force exerted by magnets when they attract or repel each other, caused by the motion of electric charges (physical property)
Ductility
The ability of a material to be stretched, pulled, or drawn into a thin wire or thread without breaking (physical property)
Flammability
A measure of how quickly a specific material is capable of catching fire and burning (chemical property)
Reactivity
The ability of a substance to interact chemically with a second substance (chemical property)
Toxicity
The ability of a substance to cause harmful health effects to an organism (chemical property)
Ph
A measure of how acidic or basic a material is (chemical property)
Physical Change
A change of matter from one form to another without a change in chemical properties - DOES NOT create a new substance
Radioactivity
The release of energy from the decay of the nuclei of certain kinds of atoms and isotopes (chemical property)
Chemical Change
A chance that occurs when one or more substances change into an entirely new/different substance.
Indications that a chemical change has occurred:
Change in color
Change in temperature
Production of Gas (bubbles)
Formation of a precipitate
Change in energy/temperature
Exothermic
Endothermic
Production of an odor
Law of Conservation of Mass
States that mass cannot be created or destroyed, but can only be changed from one form to another.
