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APES Flashcards

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10878120450ScienceAn organized way of gathering and analyzing evidence about the natural world.0
10878131686Scientific MethodA series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.1
10878139814scientific hypothesisa possible and testable answer to a scientific question or explanation of what scientists observe in nature2
10878144718DataFacts, figures, and other evidence gathered through observations.3
10878152259ModelA representation of an object or event4
10878163443scientific theorya well-tested concept that explains a wide range of observations5
10878167815peer reviewevaluation of scientific, academic, or professional work by others working in the same field.6
10878173525scientific lawA statement that describes what scientists expect to happen every time under a particular set of conditions7
10878179963MatterAnything that has mass and takes up space8
10878179964ElementA pure substance made of only one kind of atom9
10878184374CompoundA substance made up of atoms of two or more different elements joined by chemical bonds10
10878184375IsotopeAtoms of the same element that have different numbers of neutrons11
10878187964AtomSmallest particle of an element12
10878202216MoleculeA group of atoms bonded together13
10878202217IonA charged atom14
10878204963phhydrogen ion concentration15
10878209673organic compoundsCompounds that contain carbon16
10878212951physical changeA change in a substance that does not involve a change in the identity of the substance17
10878214814chemical changeA change in matter that produces one or more new substances18
10878218374chemical reactionthe process by which one or more substances change to produce one or more different substances19
10878229595Law of Conservation of MatterMatter is not created nor destroyed in any chemical or physical change20
10878231969Energythe ability to do work21
10878231970kinetic energyenergy of motion22
10878234019potential energystored energy23
10878238819thermal energyHeat energy24
10878238820electromagnetic radiationa form of energy that exhibits wavelike behavior as it travels through space25
10878246689first law of thermodynamicsEnergy can be transferred and transformed, but it cannot be created or destroyed.26
10878249232second law of thermodynamicsEvery energy transfer or transformation increases the entropy of the universe.27
10878254799SystemA group of parts that work together as a whole28
10878254800feedback loopallows the receiver to communicate with the sender and thereby informs the sender whether the message was received and decoded properly29
10878263867ecological tipping pointPoint at which an environmental problem reaches a threshold level, which causes an often irreversible shift in the behavior of a natural system.30

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