The speed of a chemical reaction is affected by temperature, concentration, particle size and the presence of a catalyst. It can be calculated by measuring changes in reactants/products.

Students explore the concept that chemical reactions involve the breaking of bonds between atoms in the reactants, and the rearrangement and rebonding of these atoms to make the products. Students ...

PROF. HINSHELWOOD'S first book on chemical change appeared in 1926 and later ran into three editions. There is little doubt that a fourth edition would have been welcomed as eagerly as its ...

A change is called irreversible if it cannot be changed back again. Many chemical reactions are irreversible. In a chemical reaction, new materials are always formed. Sometimes these new materials ...

Students will be able to make measurements showing that whether the process is a change of state, dissolving, or a chemical reaction, the total mass of the substances does not change. Note: In the ...

New cathode materials are being developed to further increase the capacity of lithium batteries. Multilayer lithium-rich transition metal oxides (LRTMOs) offer particularly high energy density.

Officials in Rockdale County, where the fire broke out, have filed a federal lawsuit against BioLab, the company that owns the chemical plant, for negligence. “We are aware of the filing, and we are ...