When first mixed, concrete can be described as (Blank) , which means it can take the shape
of the formwork provided.

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.