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AP Chemistry

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Section 1

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Plank's constant

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Chemistry Science

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Mar 1, 2020

Cards (20)

Section 1

(20 cards)

Plank's constant

Front

a number used to calculate the energy (E) absorbed or emitted by a body based on the frequency of radiation (6.626x10^-34)

Back

avogadros number

Front

6.022 E23

Back

excess reactant (reagent)

Front

a reagent present in a quantity that is more than sufficient to react with a limiting reagent; any reactant that remains after the limiting reagent is used up in a chemical reaction

Back

Density

Front

the degree of compactness of a substance (mass per volume space)

Back

percent composition by mass

Front

the percent by mass of each element in a compound

Back

Frequency

Front

The number of complete waves that pass a given point in a certain amount of time

Back

Mixture

Front

material composed of two or more elements or compounds that are physically mixed together but not chemically combined

Back

mole

Front

the SI base unit used to measure the amount of a substance

Back

dual nature of light

Front

Light acts as a wave and as particulate matter

Back

Wavelength

Front

Horizontal distance between the crests or between the troughs of two adjacent waves

Back

Amplitude

Front

the height of a wave's crest

Back

mole ratio

Front

in a balanced equation, the ratio between the numbers of moles of any two substances

Back

molar mass

Front

the mass in grams of one mole of a substance

Back

limiting reactant (reagent)

Front

the substance that controls the quantity of product that can form in a chemical reaction; moles of each reactant divided by moles used in reaction

Back

empirical formula

Front

simplest ratio of the molecules making up a compound

Back

average atomic mass

Front

weighted average of the atomic masses for the isotopes of an element

Back

mass spectrometry

Front

mass of various isotopic elements to create a mass spectrum graph

Back

molecular formula

Front

actual formula for a substance

Back

photoelectric effect

Front

The emission of electrons from a material when light of certain frequencies shines on the surface of the material

Back

isotope

Front

element with a different number of neutrons

Back