1)-Un gramo de oro (Au), en forma cúbica (0,37 cm cada lado) puede ser estirado formando un alambre de 20 µm de diámetro (más delgado que un cabello) y 160 m de longitud. Además, un gramo de oro se puede estirar formando una lámina de 1 m2 y 70 nm de espesor. ¿Cómo se llaman estas propiedades?
⦁ Capacidad para formar hilos:
⦁ Capacidad para formar láminas:

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?