AP Chemistry Vocabulary

Across

1. The minimum amount of energy required to initiate a chemical reaction.
4. The process of organizing or categorizing objects or phenomena based on shared characteristics or properties.
8. The process of reducing the concentration of a solute in a solution.
9. In constant motion or change, often used to describe systems in equilibrium.
10. In chemistry, when a substance is present in large quantities or easily available, it's referred to as this.
11. The ability of a substance to conduct electricity.
12. The measure of the separation of charge in a molecule.
14. When two quantities change in opposite directions, such that as one increases, the other decreases
15. Allowing light to pass through freely, without significant interference.
18. The amount of energy required to break a chemical bond.
19. When two variables change together in a predictable way, they are said to be this.
20. To recognize or differentiate between two or more objects or phenomena based on their distinct characteristics.
22. Weak intermolecular forces between polar molecules.
25. To determine or express the quantity or amount of something using numerical values or measurements.
28. To propose a tentative explanation for an observed phenomenon based on available evidence.
30. To watch or look at something attentively to gain information or insight.
31. To handle or control something skillfully or deceptively
35. A chemical reaction involving two reactant molecules.
38. The distance between the nuclei of two bonded atoms.
40. To suggest or put forward a plan, idea, or hypothesis for consideration.
41. Chemical reactions where a compound breaks down into simpler substances.
42. Chemical equations are considered this when the number of atoms of each element is the same on both sides.
44. To release energy or particles into the surroundings.
45. To foretell or estimate a future event or outcome based on past data or trends
49. To change or alter in form, quality, or magnitude.
50. To deduce or conclude something based on evidence or reasoning.
55. A distinguishing trait or quality of a substance, often used for identification or classification purposes.
56. The ability of a material to be drawn out into a thin wire.
57. An equation that relates the rate of a reaction to the concentration of reactants.
58. Different forms of the same element, having different molecular structures.
60. A specific instance used to illustrate or explain a concept or principle.
62. Having the quality of drawing objects together, often used to describe forces in chemistry.
64. Remaining in one place without moving, often used to describe equilibrium states.
65. A technique used to separate components of a mixture based on their differential affinities for a stationary phase.
67. A substance that lacks a defined crystalline structure.
69. The range of wavelengths of electromagnetic radiation emitted or absorbed by a substance.
71. A theory that explains how chemical reactions occur by focusing on the collisions between reactant molecules.
72. To assign a position or level to something based on its value or importance compared to others.
73. To assess or judge the value or worth of something based on criteria or standards.
75. When something consists of or is composed of certain elements or parts.
77. The number of atoms or molecules in one mole of a substance.
79. Substances formed when two or more elements chemically combine in fixed ratios.
80. A substance that speeds up a chemical reaction without being consumed in the process.
81. The principle that energy cannot be created or destroyed, only transformed from one form to another.
84. Believable or reasonable based on available evidence or information
85. Standards or rules used for evaluation or decision-making in scientific experiments or studies
87. Electrons in the inner shells of an atom.
88. A scientific law relating the concentration of a substance in a solution to its absorbance of light.
89. Happening or occurring at the same time or instant.
90. The process of releasing energy or particles, often in the form of light or heat.
91. This process involves the uptake of a substance by another material, often seen in chemical reactions or physical phenomena.
92. When one substance replaces another in a chemical reaction, it's known as this.
93. A substance that can donate a proton in a chemical reaction.
94. Proposed by John Dalton, it states that atoms are indivisible and indestructible building blocks of matter.

Down

2. The measurement of heat changes in a chemical reaction.
3. Intermolecular forces between a polar molecule and a nonpolar molecule.
4. To become smaller or decrease in size, often seen in physical changes or reactions.
5. The amount of product obtained from a reaction or process.
6. A molecule with a separation of positive and negative charges.
7. Having the ability to react as both an acid and a base.
13. When two or more substances or components act on each other or have an effect on each other.
16. A specific order or arrangement of elements or events.
17. The movement of liquids through narrow spaces without the assistance of external forces.
21. Data or measurements that are expressed as numerical values or quantities
23. Numbers placed before chemical formulas to balance chemical equations
24. A process in which one or more substances are converted into different substances with different properties.
26. When one variable increases, the other variable also increases
27. Pairs of acids and bases that differ by one proton.
29. When drawing parallels between different chemical concepts or systems to aid understanding, scientists often use this method.
32. To implement or utilize scientific principles or theories in practical situations or experiments.
33. The spontaneous ionization of water molecules into hydronium and hydroxide ions.
34. A substance that can accept a proton in a chemical reaction.
36. To explain or understand the meaning or significance of something
37. A number or symbol written below and to the right of a chemical symbol to indicate the number of atoms in a molecule.
39. The distance from the center of an atom's nucleus to its outermost electron shell.
43. To remove confusion or ambiguity by making something clearer or easier to understand.
46. A technique used to separate components of a mixture based on differences in boiling points.
47. The substance being analyzed or studied in a scientific experiment or process.
48. To make an educated guess based on available information or data.
51. Based on truth, fact, or logic, often used to describe arguments or conclusions.
52. A solution that resists changes in pH when acids or bases are added.
53. To suggest or hypothesize a theory or idea, often for consideration or further investigation
54. Data or observations that are descriptive rather than numerical in nature
55. A law describing the electrostatic interaction between charged particles.
59. To move or convey something from one place to another.
61. Chemists frequently break down data or substances into smaller parts to understand their nature or composition.
63. A unit used to express the mass of atoms and molecules.
65. In scientific research, scientists often compare data or phenomena to identify similarities and differences.
66. The weighted average mass of atoms in a naturally occurring sample of an element.
68. A repeating arrangement or sequence of elements or events
70. The size or extent of something, often measured in terms of scale or degree
74. The basic unit of matter, consisting of a nucleus surrounded by electrons.
75. Chemical bonds formed by the sharing of electrons between atoms.
76. Not moving or changing, often used to describe certain states in chemistry
78. When exact values are not available, scientists often use this term to describe values that are close to the actual value.
82. A continuous sequence or range of values, often used in scientific discussions about various properties.
83. A series of steps followed in a particular order to achieve a specific result or goal.
86. A general direction in which something tends to move or develop