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 ...

Can be used to recap on tritation or could lead into a classroom discussion on chemical changes and structures.

The lesson can also be used to lay a foundation for learning about changes in state and chemical changes which can be further developed in later grades. If water is cooled enough it can change to ice.

Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions ...

The White House announced a new executive order signed by President Trump on Tuesday to "protect[] children from chemical and surgical mutilation." ...

An effort is underway to convince Georgia’s Environmental Protection Division that changes to a chemical plant’s permit will worsen Augusta's air.

Investing.com -- BofA revised ratings on chemical stocks amid a diverse chemical end markets and changed risk/reward views after a 15% sell-off in the sector in fourth quarter. Celanese (NYSE ...