Benchmark 4 Flashcards
(28 cards)
What is the most penetrating type of radiation?
Gamma
What is a negatively charged particle emitted from a nucleus at high speed?
Beta
What is the amount of time it takes for half of a radioactive isotope to break apart?
Half-Life
The process by which nuclei having low masses are united to form nuclei with larger masses?
Fusion
What are atoms of the same element with a different number of neutrons?
Isotopes
What is a helium nucleus that is the weakest form of radiation?
Alpha
What is the splitting apart of a nucleus of a large atom into two smaller atoms?
Fission
What do you call the atoms in Group 18?
Noble Gases
What are the most reactive group of metals?
Alkali metals
What are elements that form salts by combining with metals?
Halogens
What group of metals include oxygen and sulfur?
Chalcogens
What reacts to form bases, found in minerals?
Alkaline earth metals
What forms multiple charges, used to make pigments?
Transition metals
What are found on the stair step line of the table of elements, part metal and part nonmetal?
Metalloids
What does the chemical symbol represent for an element?
Name
What shows the number if elements in a compound and how they are bonded together?
Chemical formula
What do dot diagrams represent?
Valence electrons
What kind of chemical bond is formed when am equal exchange or transfer of electrons occurs?
Ionic
What holds atoms together in a compound?
Chemical bond
What is a group of covalently bonded atoms that act together as one charged atom?
Polyatomic ion
What is an abbreviation used for elements in chemistry?
Chemical symbol
What is a chemical bond that occurs when atoms share electrons?
Covalent
What is an insoluble compound that forms during a chemical reaction?
Precipitate
What are numbers that precede chemical formulas, used to balance equations?
Coefficients
