Flashcards
Chemistry Definitions
Cards in this deck (24)
- 1Accuracyhow close a value is to some actual number or the data
- 2Precisionmore than one data (values) closely grouped together
- 3Matteranything that contains mass, volume, and inertia
- 4Massthe amount of matter in an object
- 5Energythe ability to do work
- 6Law of Conservation of Mattermatter can NOT be created or destroyed, it simply changes form
- 7Physical Propertya characteristic where the composition of matter is NOTaltered
- 8Chemical propertyA characteristic where the composition of matter is altered
- 9Chemical changewhen one alters the basic makeup of a substance
- 10Physical changewhen one alters the matter but does NOT alter the basic makeup
- 11Intensive propertya characteristic that DOES NOT CHANGE when you change the amount of the substance (size)
- 12Extensive propertya characteristic that DOES when you change the amount of the substance (size)
- 13Densitythe ratio between the amount of matter in something vs. the amount of space it occupies
- 14Volumethe amount of space an object occupies
- 15Atomic radius1/2 the diameter associated with the distance between 2 identical atoms bonded together
- 16Ionization energythe amount of energy needed to remove electrons (e-) from the outer most energy level
- 17Electron affinitythe amount of energy released when an electron (e-) is placed on the outer energy level of atoms
- 18Electronegativitythe attraction an atom has for an e- (electron) pair
- 19Period numbernumber of energy levels (vertical)
- 20Group numbernumber of valence electrons (horizontal)
- 21Aufbaue- (electrons) are placed into probable locations from the lowest energy state into higher ones
- 22Law of Definite Composition (discovered by J. Proust)a chemical compound contains the same elements in exactly the same proportions, regardless of the compound's size or its source
- 23Law of Multiple Proportions (discovered by J. Dalton)two or more different compounds made of the same two elements combined in small whole number ratios
- 24—
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- 10th grade Chemistry Flashcards on Chemistry Definitions, created by Alyssa McGee on 04/05/2018.
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- Alyssa McGee
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