Z: Describes the configuration of a double bond in which the two groups of highest Cahn-Ingold-Prelog priority are cis. From the German zusammen, meaning together.
What is the best chemistry dictionary?
Oxford Dictionary of Chemistry is a popular and authoritative guide to all aspects of its discipline. With over 5,000 entries, its broad coverage includes physical chemistry and biochemistry, and is heavily informed by the most current research.
What is Z in terms of chemistry?
Z is used to signify the atomic number or proton number of an atom. Z = # of protons of an atom. A is used to signify the atomic mass number (also known as atomic mass or atomic weight) of an atom. A = # protons + # neutrons.
What is chemistry dictionary definition?
Definition of chemistry 1 : a science that deals with the composition, structure, and properties of substances and with the transformations that they undergo. 2a : the composition and chemical properties of a substance the chemistry of iron. b : chemical processes and phenomena (as of an organism) blood chemistry.
What starts with K in chemistry?
Potassium (K – Kalium)
What is a science Z word?
Zirconium: Zirconium, a strong transition metal cum chemical element holding the atomic number 40 and symbol ‘Zr. ‘ By appearance, it is silverfish grey and malleable, strong, and ductile by nature.
WHAT IS A in chemistry?
An angstrom or ångström is a unit of length used to measure very small distances. One angstrom is equal to 10−10 m (one ten-billionth of a meter or 0.1 nanometers).
What is an a value in chemistry?
The A value of a ligand is a measure of steric strain it causes when interacting with a given ligand (the higher the A value, the more severe the steric strain), which in turn is roughly a measure of the size of the ligand (the more severe the steric strain, the larger the ligand).
What is N in chemistry?
nitrogen (N), nonmetallic element of Group 15 [Va] of the periodic table.
What are the 5 types of chemistry?
In a more formal sense, chemistry is traditionally divided into five major subdisciplines: organic chemistry, biochemistry, inorganic chemistry, analytical chemistry, and physical chemistry.
Who is the father of science?
Albert Einstein called Galileo the “father of modern science.” Galileo Galilei was born on February 15, 1564, in Pisa, Italy but lived in Florence, Italy for most of his childhood.
What is chemistry full?
Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change.
What science word starts with W?
watt – Watt is the SI unit for power. wavefunction – A wavefunction is a function describing the probability of a particle’s quantum state.
What starts with y in science?
Yttrium: Yttriumis the silver-metallic chemical element. The symbol of yttrium in the periodic table is ‘Y’ and 39 is its atomic number.
What starts with F in science?
- Fluorine, symbol F, a chemical element.
- f-block, a block of elements in the periodic table of elements.
- F (or Phe), abbreviation for compound phenylalanine.
What science word starts with U?
Uranium: Uranium is the term given to the chemical element of the periodic table which takes atomic number 92 and the symbol ‘U’. Uranium is a radioactive element but exposure to it may not cause hazardous health issues.
What is r in chemistry?
R is an abbreviation for radical, when the term radical applied to a portion of a complete molecule (not necessarily a free radical), such as a methyl group.
What is 1 mole of a substance?
A mole is the amount (10) of material containing 6.02214 × 1023 particles. … Notice that the definition of the mole is an amount of substance. We will often refer to the number of moles of substance as the amount of the substance.
What are EZ isomers?
E-Z isomerism (also known as cis-trans isomerism or Geometric isomerism) is a type of stereoisomerism in which the same groups are arranged differently. The general approach of the E-Z system is to observe the two groups at the end of each double bond.
What is Z in Iupac name?
If both substituents ranked 1 are on the same side of the pi bond, the bond is given the descriptor Z (short for German Zusammen, which means “together”).
What is R & S isomer?
The R and S isomers are organic molecules having a chiral center, which is a carbon atom that has four different substituents attached to it. These substituents get listed according to their priority (the priority is determined using CIP rules as described below).
What is pKa and Ka?
More precisely – pKa is the negative log base ten of the Ka value (acid dissociation constant). The lower the value of pKa, the stronger the acid and the greater its ability to donate its protons.
How do I calculate pKa?
Calculate the pKa with the formula pKa = -log(Ka). For example, pKa = -log(1.82 x 10^-4) = 3.74.
What is a high K in chemistry?
In terms of a reaction, a high K value tells us that there are more products than reactants in the chemical reaction, and therefore a greater equilibrium concentration of the products.
What is M in chemistry?
Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of a solution.