Flashcards in Chemistry Deck (30):
Matter is everything that is not energy
Examples of atomic particles are protons, neutrons, and electrons
An electron stable subatomic particle with a charge of negative electricity
A neutron is subatomic particle of about the same mass as a proton but without an electric charge
A proton is a positive electric charge equal in magnitude to that of an electron
AMU is unit of mass used to express atomic and molecular weights
An electron shell is the outside part of an atom around the atomic nucleus
A compound is a substance formed when two or more chemical elements are chemically bonded together
The periodic table is a table of the chemical elements arranged in order of atomic number
Atomic number is the number of protons in the nucleus of an atom
Atomic mass is the mass of an atom of a chemical element expressed in atomic mass units
Alchemists are golden day chemists who mixed chemicals and tried to change ordinary metals into gold.
Investigation is activity aimed at finding information
Observation is information obtained by the use of our senses or measuring instruments
Scientists are people skilled in or working in the fields of science
An element is a pure substance made up of only one type of atom
An atom is a very small particle that makes up all things. Atoms have the same properties as the objects they make up.
A chemical symbol is the standard way that scientists write the names of the elements, using either a capital letter or a capital followed by a lowercase letter
A positively charged ion.
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
A negatively charged ion.
A metalloid is any chemical element which has properties in between those of metals and nonmetals.
Any of the set of metallic elements occupying a central block in the periodic table.
Luster is the way light interacts with the surface of a crystal, rock, or mineral.
Elements that form cations when compounds of it are in solution and oxides of the elements form hydroxides rather than acids in water.
A chemical element that lacks the characteristics of a metal and that is able to form.
A law stating that the elements, when listed in order of their atomic numbers, fall into recurring groups, so that elements with similar properties occur at regular intervals..
Hard but liable to break easily.
In chemistry an electron shell, may be thought of as an orbit followed by electrons around an atom's nucleus.