Benchmark 4 Study Guide
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The most penetrating type of radiation.
Gamma
Negatively charged particles emitted from a nucleus at high speed.
Beta
The amount of time it take 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
Atoms of the same element with a different number of neutrons.
Isotope
Stopped by a piece of paper, a helium nucleus that is the weakest form of radiation.
Alpha
The splitting apart of a nucleus of a large atom into two smaller atoms.
Fission
Group18, inert, do not rom compounds
Noble Gases
The most reactive group of metals.
Alkali Metals
Elements that form salts by combining with metals.
Halogens
Includes oxygen and sulfur
Chalcogens
React to form bases, found in minerals
Alkaline Earth Metals
Form multiple charges, used to make pigments
Transition Metals
Found on the stair step line; part metal part nonmetal
Noble Gases
What does the chemical symbol represent for an element?
Name
This shows the number of 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 an equal exchange or transfer of electrons occurs.
Ionic
Hold atoms together in a compound
Chemical Bond
A group of covalently bonded atoms that acts together as one charged atom.
Polyatomic Ion
This is an abbreviation used for elements in chemistry.
Chemical Symbol
A chemical bond that occurs when atoms share electrons.
Covalent
What is an insoluble compound that forms during a chemical reaction?
Precipitate
Numbers that precede chemical formulas, used to balance equations.
Coefficients