S8P1 Vocabulary Matter
The Scientific View of the Nature of Matter
Terms in this set (28)
(physics and chemistry) the smallest component of an element having the chemical properties of the element
smallest unit of most compounds
a substance made of only one kind of matter and having definite properties
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
substances formed by the joining of elements through chemical bonding. every molecule of a compound is the same.
a physical combination of substances that can still be seperated
have a definite size and shape; particles are packed together tightly and are in a regular pattern
have a definite size and volume, but no definite shape; particles are more active and farther apart than a solid
Have no definite shape or volume. Take the shape and volume of its container. High kinetic energy. Molecules have no attraction to each other.
A fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors
characteristics of a substance that can be observed or measured without changing the substance into something else
describes how a substance changes into a new substance, either by combining with other elements or by breaking apart into new substances, includes reactivity and flammability
a type of change that alters the physical properties of a substance but does not change its composition
a change in which one or more substances combine or break apart to form new substances
Periodic Table of Elements
the scientific chart that contains an arrangement of all known elements into a particular order based upon the number of protons and other properties of each element.
Periodic Table Groups
vertical columns (elements that are similar with respect to their chemical and physical properties) also tell the the number of valence electrons
Periodic Table Periods
Row - Elements have same number of orbital shells, arranged by atomic number (protons)
positively charged particles located in the nucleus
the particles of the nucleus that have no charge
negatively charged particles found outside the nucleus
the positively charged dense center of an atom
electrons on the outermost energy level of an atom
an energy level representing the distance of an electron from the nucleus of an atom.
that which has mass and occupies space
Law of Conservation of Matter
in a chemical reaction, atoms can be neither created nor destroyed, only rearranged.
located in the middle of the periodic table and have different rules for shells and valence electrons
make up the majority of the periodic table
elements with properties that fall between those of metals and nonmetals; located on the zig-zag line on the periodic table