Chapter 15 Vocab Flashcards
Substance
Element or compound that cannot be broken down into simpler components without losing the properties of the original substance
Element
substance with atoms that are all alike
Compound
substance in which the atoms of two or more elements are combined in a fixed proportion
Heterogeneous Mixture
substance in which its different components are easily distinguished
Suspension
heterogeneous mixture containing a liquid, and in which visible particles slowly settle due to gravity
Colloid
Heterogeneous mixture whose particles never settle
Tyndall Effect
Tendency for a beam of light to scatter as it passes through a colloid.
Homogeneous Mixture
Substance containing two or more components that are blended uniformly so that individual components are distinguishable with a microscope
Solution
Homogeneous mixture , remains constantly and uniformly mixed and has particles that are so small they cannot be seen with a microscope
Physical Property
Any characteristic of a material , such as size or shape, that can be observed without changing the identity of the material.
Physical Change
Any change in size, shape, or state of matter in which the identity of the substance remains the same
Distillation
Process that can separate two substances in a mixture by evaporating a liquid and re-condensing its vapor
Chemical Property
any characteristic of a substance , such as flammability that can be observed that produces a new substance
Chemical Change
Change of one substance into a new substance
Law of conversion of mass
States that the mass of all substances present before a chemical change is equal to the mass of all substances remaining after the change.
