Flashcards in Science Chapter 3 Vocab Deck (39):
Smallest particle that can still be considered and element
A tiny, negatively charged particle that moves around the outside of the nucleus of an atom.
The central core of an atom which contains protons and neutrons
Small, positively charged particles that are found in the nucleus of an atom.
A region of an atom in which electrons of the same energy are likely to be found.
A small particle in the nucleus of the atom, with no electrical charge.
The number of protons in the nucleus of an atom.
An atom with the same number of protons and a different number of neutrons from other atoms of the same element.
The sum of protons and neutrons in the nucleus of an atom.
The average mass of all the isotopes of an element.
An arrangement of the elements showing the repeating pattern of their properties.
A one- or two-letter representation of an element.
1. A horizontal row of elements in the periodic table
A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.
Elements in the same vertical column of the periodic table; also called family.
The way a mineral reflects light from its surface.
A term used to describe material that can be hammered or rolled into flat sheets.
A term used to describe a material that can be pulled out into a long wire.
The ability of an object to transfer heat.
The ability of an object to carry electric current.
The ease and speed with which an element combines, or reacts, with other elements and compounds.
The gradual wearing away of a metal element due to a chemical reaction.
An element in Group 1 of the periodic table.
Alkaline Earth Metals
An element in Group 2 of the periodic table.
One of the elements in Groups 3 through 12 of the periodic table.
An element that lacks most of the properties of a metal.
A molecule consisting of two atoms.
An element found in Group 17 of the periodic table.
An element in Group 18 of the periodic table.
An element that has some characteristics of both metals and nonmetals.
A substance that can conduct electric current under some conditions.
The process in which the nuclei of radioactive elements break down, releasing fast-moving particles and energy.
A reaction involving the particles in the nucleus of an atom that can change one element into another element.
The spontaneous emission of radiation by an unstable atomic nucleus.
A particle given off during radioactive decay that consists of two protons and two neutrons.
A fast-moving electron that is given off as nuclear radiation.
Electromagnetic waves with the shortest wavelengths and highest frequencies.
The time it takes for half of the atoms of a radioactive element to decay.