Fundamentals of Chemistry Flashcards
Physical Property
a quality or condition of a substance that can be observed or measured without changing the substance’s composition
Chemical Property
the ability of a substance to undergo a specific chemical change
Solid
a form of matter that has a definite shape and volume
Liquid
a form of matter that has a indefinite shape and definite volume
Gas
a form of matter that has both a indefinite shape and volume
Physical Change
when some properties of a materials change but the composition of the substance doesn’t change
Chemical Change
a change that produces matter with a different composition than the original matter
Mixture
A physical blend of two more substances
Solution
A mixture in which one substance (solute) is dissolved and uniformly distributed throughout another substance (solvent).
Heterogeneous Mixture
A mixture in which the composition is not uniform.
Homogeneous Mixture
A mixture in which the composition is uniform.
Element
The simplest form of matter that has a unique set of properties.
Compound
A substance that contains two or more elements chemically combined in a fixed proportion.
Conservation of Mass
A law that states that in any physical change or chemical reaction, mass is conserved.
Chemical Symbol
a one- or two-letter representation of an element
Mass
a measure of the amount of matter that an object contains; the SI base unit is kilogram
Substance (Pure)
Matter that has a uniform an definite composition; either an element or a compound
Volume
a measure of the space occupied by a sample of matter
Atom
the smallest unit of an element that retains the properties of the element
Molecule
two or more atoms bonded together
Chemistry
the study of matter and the changes that it undergoes
Matter
anything that has mass and occupies space
Law
a concise statement that summarizing the results of many observations and experiments, explains what; often mathematical
Science
is a systematic approach that builds and organizes knowledge in the form of testable explanations and predictions about the universe
Theory
a well-tested explanation for a broad set of observations; explains why
