Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Chemical Reactions01:19

Chemical Reactions

97.6K
A chemical reaction is a process by which the bonds in the atoms of substances are rearranged to generate new substances. Matter cannot be created or destroyed in a chemical reaction—the same type and number of atoms that make up the reactants are still present in the products. Merely, the rearrangement of chemical bonds produces new compounds.
Chemical Reactions Rearrange Atoms into New Substances
A chemical reaction takes starting materials—the reactants—and changes them...
97.6K
Chemical Reactions02:26

Chemical Reactions

13.9K
A balanced chemical equation provides the information of chemical formulas of the reactants and products involved in the chemical change. A reaction’s stoichiometry helps predict how much of the reactant is needed to produce the desired amount of product, or in some cases, how much product will be formed from a specific amount of the reactant.
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in...
13.9K
Introduction to Chemical Reactions01:23

Introduction to Chemical Reactions

14.5K
All chemical reactions begin with a reactant, the general term for one or more substances entering the reaction. Sodium and chloride ions, for example, are the reactants in the production of table salt. One or more substances produced by a chemical reaction are called the product. Chemical reactions follow the law of conservation of mass, which means that matter cannot be created nor destroyed in a chemical reaction. The components of the reactants—the number of atoms and the...
14.5K
Chemical Shift: Internal References and Solvent Effects01:17

Chemical Shift: Internal References and Solvent Effects

1.6K
In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
1.6K
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.9K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.9K
Chemical Equilibria: Redefining Equilibrium Constant01:20

Chemical Equilibria: Redefining Equilibrium Constant

1.5K
The effect of an inert salt on the solubility of a sparingly soluble salt is known as the salt effect. The degree of the salt effect varies with the ionic strength of the solution, which in turn depends on the activity of the species in the solution. The activity is expressed as the product of concentration and the activity coefficient of the species.
To calculate the equilibrium constants of solutions of moderately high ionic strength, one must account for the salt effect. This redefined...
1.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Noble-metal-free π-stacked metal-organic nanosheets featuring unidirectional electron transport channels for highly efficient electrocatalytic CO<sub>2</sub> reduction.

Chemical science·2026
Same author

Activating Nonenzymatic Hemoglobin for Highly Selective CO<sub>2</sub>-to-Formate Photoreduction in Water through Supramolecular Phenolic Mesocrystal Encapsulation.

ACS nano·2026
Same author

Synthesis and Ring-Opening Polymerization of Antimony(III)-Bridged [1]Ferrocenophanes.

Inorganic chemistry·2026
Same author

Uniform Rectangular Conjugated Polymer Platelet Micelles via One-Step Crystallization-Driven Nucleation-Growth.

Journal of the American Chemical Society·2025
Same author

Uniform conjugated polymer rectangular platelets exhibiting long-range exciton diffusion.

Nature materials·2025
Same author

Probing the Heteroepitaxial Seeded Growth and Self-Sorting Processes of Segmented Co-Micelles with Chemically Distinct Crystalline Cores.

Angewandte Chemie (International ed. in English)·2025

Related Experiment Video

Updated: Mar 25, 2026

Applying Cheminformatics to Develop a Structure Searchable Database of Analytical Methods
05:34

Applying Cheminformatics to Develop a Structure Searchable Database of Analytical Methods

Published on: June 6, 2025

1.9K

Are the Current Changes Good or Bad for Chemistry?

Ian Manners1

  • 1School of Chemistry, University of Bristol, BS8 1TS, UK. ian.manners@bris.ac.uk.

Angewandte Chemie (International Ed. in English)
|February 27, 2016
PubMed
Summary
This summary is machine-generated.

Fundamental research drives innovation and commercial products, yet its support is declining globally. Fostering an environment for novel ideas is crucial for human progress and scientific advancement.

More Related Videos

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.8K
Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
07:55

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

13.5K

Related Experiment Videos

Last Updated: Mar 25, 2026

Applying Cheminformatics to Develop a Structure Searchable Database of Analytical Methods
05:34

Applying Cheminformatics to Develop a Structure Searchable Database of Analytical Methods

Published on: June 6, 2025

1.9K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.8K
Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
07:55

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

13.5K

Area of Science:

  • Scientific Discovery
  • Innovation Ecosystems

Background:

  • Commercial products often stem from fundamental research with no initial commercial intent.
  • Current global trends show a decline in support for basic scientific research.

Discussion:

  • The importance of unfettered scientific inquiry for long-term societal benefit.
  • The potential negative consequences of reduced investment in fundamental research.

Key Insights:

  • Discovery in science is unpredictable and often arises from curiosity-driven exploration.
  • Supporting basic research is essential for future technological and commercial breakthroughs.

Outlook:

  • Advocating for sustained funding and an encouraging environment for fundamental research.
  • Highlighting the critical role of basic science in addressing future global challenges.