Physical Science Packet #2
Terms in this set (49)
Any fact about an item that can be observed without changing the matter's identity.
Describe matter based on its ability to change into new matter that has different properties.
When one or more substances are changed into new substances that have new and different properties.
A change that affects one or more physical properties of an object.
substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
Positively charged particles
Negatively Charged Particles
Particles of the nucleus that have no charge
The smallest particle into which an element can be divided and still be the same substance
The center of an atom that is tiny and extremely dense, it is positively charged
Regions inside an atom where electrons are likely to be found
The amount of protons in the nucleus of an atoms
Atomic Mass Unit
The SI unit used to express the masses of particles in atoms
The weighted average of the masses of all the naturally occurring isotopes of that element
Atoms that have the same number of protons but have different numbers of neutrons
The sum of protons and neutrons in an atom
It states that the repeating chemical and physical properties of elements change periodically with elements atomic numbers
Each horizontal rows of elements on the periodic table
Each vertical column of elements on the periodic table
An electron in the outermost energy level of an atom
Lewis Dot Diagram
Diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
Elements in the same group of the periodic table. They are very reactive and share the traits of softness, color of silver, density, and shininess.
Alkaline Earth Metals
Another group in the periodic table. They are very reactive but not as reactive as Alkali Metal. They share the properties of color of silver and density. They are more dense than Alkali Metal.
Any of the set of metallic elements occupying a central block in the periodic table
Any gaseous elements occupying Group 0 of the periodic table. They are believed to be unreactive
A group in the periodic table consisting of five chemically related elements: fluorine, chlorine, bromine, iodine (I), and astatine
The joining of atoms to form new substances
An interaction that hold two atoms together
A bond that forms when electrons are transferred from one atom to another
(formed between a metal and a nonmetal)
Charged particles that form when an atom gain or lose an electron
A repeating three dimensional pattern that forms when ions bond
When atoms share one or more pairs of electrons.
(formed between two nonmetals)
Consists of two or more atoms joined in a definite ratio. The smallest particle into which a covalently bonded compound can be divided and still be the same compound
A bond formed by the attraction between positively charged metal ions and the electrons in the met
(formed between two metals)
A substance where there is only one type of particle
Shiny, conducts heat energy and electric current
They do not conduct heat energy or the electric current, they are often dull in appearance
Have properties of both metals and nonmetals
A pure substance that is composed of two or more elements that are chemically combined
A combination of two or more substances that are not chemically combined
A mixture that that appears to be a single substance
A combination of two or more pure substances in which the original substances retain their chemical properties
Any mixture that is uniform in composition throughout.
The substance that is dissolved
The substance that the solute is dissolved into
The amount of solute dissolved in solvent
The ability of the solute to dissolve in a solvent at a certain temperature
A mixture in which the particles are dispersed throughout but are not heavy enough to settle out
A mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out