Test 1 Vocab Flashcards
Intensive Property
A property that is independent of the amount of substance
Extensive Property
A property that varies with the amount of substance
Element
A pure substance that cannot be broken down into simpler substances
Compound
A pure substance composed of two or more elements that are chemically bonded in fixed proportion.
Define Homogenous Mixture
A mixture where all components are distributed uniformly. Composition and appearance are uniform
Define Heterogenous Mixtures
A mixture that is not distributed uniformly. Mixture had regions of different compositions
Define Physical Property
A property of a substance that can be observed without changing into another substance
Define chemical property
A property of a substance that can only be observed when reacting it with something to form a new substance
Define Molecular Formula
A chemical formula that indicates the amount of atoms in a atom for one molecule of a pure substance
Define Precision
The extent to which the measurements of the same variable agree
Define Accuracy
Agreement between the experimentally measured value and the true value
Define Isotopes
An atom with the same amount of protons, but a different amount of neutrons.
Define Natural Abundance
Proportion of a isotope relative to all isotopes of the element.
Define Core Electron
An electron in the inner most filled subshells
Define Valence Electron
An electron in the outer most occupied shell of a atom
