Save. You can exchange data, such as contacts, by pairing two Bluetooth-enabled devices, selecting the contacts you want to transfer and sharing them over the Bluetooth connection.ave. You can exchange data, such as contacts, by pairing two Bluetooth-enabled devices, selecting the contacts you want to transfer and sharing them over the Bluetooth connection.
technical-grade - containing small amounts of other chemicals, hence slightly impure; technical-grade sulfuric acid. technical grade. chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
Grade Level: 5. Standards: 1a. Students know that during chemical reactions the atoms in the reactants rearrange to. form products with different properties. 1f. Students know differences in chemical and physical properties of substances are. used to separate mixtures and identify compounds. Description: Students will learn about chemical reactions and the signs that a chemical reaction took. place. This lesson was designed as a pre-lab to the Mystery Powders Lab.