Aleks Placement Test: Chemistry Flashcards

Basic unit of matter which cannot be broken down.

A pure substance that contains only one type of atom.

<p>Two or more elements that are chemically bonded.</p> Signup and view all the answers

<p>Two or more substances that are together but not bonded.</p> Signup and view all the answers

<p>A substance that contains only one kind of compound.</p> Signup and view all the answers

<p>The state of matter with the lowest energy.</p> Signup and view all the answers

<p>Strong bonds.</p> Signup and view all the answers

<p>Weak bonds.</p> Signup and view all the answers

<p>No bonds.</p> Signup and view all the answers

<p>The state of matter with the highest energy.</p> Signup and view all the answers

<p>First to define an element.</p> Signup and view all the answers

<p>Developed the atomic theory.</p> Signup and view all the answers

<p>Given compounds always have the same relative numbers and types of atoms.</p> Signup and view all the answers

<p>J.J. Thomson.</p> Signup and view all the answers

<p>Negatively charged particles in an atom.</p> Signup and view all the answers

<p>Positively charged particle in an atom.</p> Signup and view all the answers

<p>Neutral particle in an atom.</p> Signup and view all the answers

<p>A model depicting a sphere of positive charge with electrons scattered throughout.</p> Signup and view all the answers

<p>Conducted an experiment that revealed the nucleus.</p> Signup and view all the answers

<p>Elements that want to lose electrons.</p> Signup and view all the answers

<p>Malleable, ductile, conductive, lustrous.</p> Signup and view all the answers

<p>The ability to be molded into shapes.</p> Signup and view all the answers

<p>The ability to be pulled into wire.</p> Signup and view all the answers

<p>The ability to allow heat or electricity to pass through.</p> Signup and view all the answers

<p>The ability to be shiny.</p> Signup and view all the answers

<p>Elements that want to gain electrons.</p> Signup and view all the answers

<p>Elements with characteristics of both metals and nonmetals.</p> Signup and view all the answers

<p>Elements that occur in pairs in their natural state.</p> Signup and view all the answers

<p>The ability of a molecule to attract electrons.</p> Signup and view all the answers

<p>The radius of an atom.</p> Signup and view all the answers

<p>The energy needed to remove an electron.</p> Signup and view all the answers

<p>An atom that has gained or lost electrons.</p> Signup and view all the answers

<p>An atom that gains electrons and has a negative charge.</p> Signup and view all the answers

<p>An atom that loses electrons and has a positive charge.</p> Signup and view all the answers

<p>An atom that has changed its number of neutrons.</p> Signup and view all the answers

<p>A unique number for each element that tells the number of protons.</p> Signup and view all the answers

<p>A number that indicates the total number of protons and neutrons in an atom.</p> Signup and view all the answers

<p>Atomic mass - Atomic number.</p> Signup and view all the answers

<p>A nucleus that spontaneously decomposes.</p> Signup and view all the answers

<p>Essentially a helium nucleus.</p> Signup and view all the answers

<p>Essentially an electron.</p> Signup and view all the answers

<p>A high energy photon of light.</p> Signup and view all the answers

<p>The time required for half of the original sample of nuclei to decay.</p> Signup and view all the answers

<p>The average of isotopes naturally occurring.</p> Signup and view all the answers

<p>Average Mass = (%) (Mass of Isotope A) + (%) (Mass of Isotope B) + ...</p> Signup and view all the answers

<p>The highest point of a wave.</p> Signup and view all the answers

<p>The lowest point of a wave.</p> Signup and view all the answers

<p>The distance between the crests of a wave.</p> Signup and view all the answers

<p>The number of waves that pass through a point in a given time.</p> Signup and view all the answers

<p>The height of a crest or trough.</p> Signup and view all the answers

<p>How fast a wave travels.</p> Signup and view all the answers

<p>A point on a wave where the wave returns to the zero line.</p> Signup and view all the answers

<p>The range of wavelengths or frequencies of electromagnetic radiation.</p> Signup and view all the answers

<p>White light that creates all visible colors when passed through a prism.</p> Signup and view all the answers

<p>Atoms emit characteristic colors of light when excited by energy.</p> Signup and view all the answers

<p>A light particle.</p> Signup and view all the answers

<p>C = w f</p> Signup and view all the answers

<p>3.00 x 10^8 m/s.</p> Signup and view all the answers

<p>Broken bands of colored light.</p> Signup and view all the answers

<p>Emission spectrum occurs due to energy release from electrons.</p> Signup and view all the answers

<p>Absorption spectrum occurs due to energy gained by electrons.</p> Signup and view all the answers

<p>E = h f</p> Signup and view all the answers

<p>6.626 x 10^-34 Joules/hertz.</p> Signup and view all the answers

<p>Light sometimes acts like a particle and sometimes like a wave.</p> Signup and view all the answers

<p>A model where orbitals are not like orbits.</p> Signup and view all the answers

<p>You cannot know the exact position and momentum of an electron at the same time.</p> Signup and view all the answers

<p>Probability of finding electrons in certain regions of an atom.</p> Signup and view all the answers

<p>A region around the nucleus where an electron may be found 90% of the time.</p> Signup and view all the answers

<p>The principal quantum number.</p> Signup and view all the answers

<p>The orbital quantum number.</p> Signup and view all the answers

<p>The orientation of the orbital in space.</p> Signup and view all the answers

<p>The spin of an electron in an orbital.</p> Signup and view all the answers

<p>Each electron has a unique set of quantum numbers.</p> Signup and view all the answers

<p>The orbital with the lowest energy.</p> Signup and view all the answers

<p>The orbital with the second lowest energy.</p> Signup and view all the answers

<p>The orbital with the second highest energy.</p> Signup and view all the answers

<p>The orbital with the highest energy.</p> Signup and view all the answers

<p>Each suborbital fills with one electron before accepting a second.</p> Signup and view all the answers

<p>Electron configuration shorthand.</p> Signup and view all the answers

<p>Electrons in the outermost orbital.</p> Signup and view all the answers

<p>Electrons an element will gain or lose to become stable.</p> Signup and view all the answers

<p>Substances that always start with hydrogen.</p> Signup and view all the answers

<p>An acid that contains an oxygen.</p> Signup and view all the answers

<p>An acid that contains a carbon atom.</p> Signup and view all the answers

<p>An acid that has 2 hydrogens to donate.</p> Signup and view all the answers

<p>An acid that has 3 hydrogens to give.</p> Signup and view all the answers

<p>ate</p> Signup and view all the answers

<p>ite</p> Signup and view all the answers

<p>1 carbon.</p> Signup and view all the answers

<p>2 carbons.</p> Signup and view all the answers

<p>3 carbons.</p> Signup and view all the answers

<p>4 carbons.</p> Signup and view all the answers

<p>5 carbons.</p> Signup and view all the answers

<p>6 carbons.</p> Signup and view all the answers

<p>7 carbons.</p> Signup and view all the answers

<p>8 carbons.</p> Signup and view all the answers

<p>9 carbons.</p> Signup and view all the answers

<p>10 carbons.</p> Signup and view all the answers

<p>Substances derived by subtracting a hydrogen and adding a -OH group.</p> Signup and view all the answers