Chemistry Glossary Terms Starting with the Letter R

Chemistry Glossary and Dictionary

mRNA serves as a template for protein synthesis in the cell's ribosomes.
mRNA serves as a template for protein synthesis in the cell's ribosomes. LadyofHats, Wikipedia Commons

This chemistry glossary offers definitions for terms which are commonly used in chemistry and chemical engineering. These words begin with the letter R.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

racemic

rad

radian

radiant energy - Radiant energy is the energy contained in electromagnetic radiation. The SI unit for radiant energy is the Joule.

radiant flux

radiant intensity

radiation

radiation absorbed dose

radical - A radical is a molecule containing an unpaired free electron.
Also Known As: free radical

radioactivity

radioactive - Radioactive refers to a substance that causes or exhibits behavior due to radioactivity.

radioactive tracer

radiochemistry

radioisotope

radionuclide

radio waves

random copolymer

radium - Radium is the name for the element with atomic number 88 and is represented by the symbol Ra. It is a member of the alkaline earth metals group. Radium can be used to make surfaces glow in the dark.

radon

random

Rankine

Rankine Temperature Scale

Raoult's Law

rare earth

rare earth element

rate determining step

rayon

reactant

reaction

reaction coordinate

reaction quotient - Q

reaction rate

reagent

real gas

rearrangement reaction

receptor

reciprocal rule

redox indicator

redox reaction

redox titration

reducing agent

reductant

reduction

reduction agent

reduction half reaction

reductone

refrigerant

regelation - Regelation is a phenomenon where a substance melts under pressure and freezes again when the pressure is reduced.

relative density

relative error

relative humidity

relative standard deviation

relative uncertainty

rem

rennet

rennin

residue

resin

resonance

reverse osmosis

reversible reactions

rhenium

rhodium

ring molecule

RNA

roasting

rodenticide

roentgen

Roentgen Equivalent Man (rem)

roentgenium

room temperature

rosin

RT

rubidium - Rubidium is the name for the element with atomic number 37 and is represented by the symbol Rb.

It is a member of the alkali metal group.

RuBisCO

rust

ruthenium

rutherfordium

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z