Answer:
oxidation-reduction reaction or redox reaction.
Explanation:
If hydrogen gas is passed over heated copper oxide (CuO), the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained
Answer:
Metalloid, in chemistry, an imprecise term used to describe a chemical element that forms a simple substance having properties intermediate between those of a typical metal and a typical nonmetal.
Metalloids usually look like metals but behave largely like nonmetals. Physically, they are shiny, brittle solids with intermediate to relatively good electrical conductivity and the electronic band structure of a semimetal or semiconductor.
Answer:
d
Explanation:
all of the above are functions of bones
I can’t understand in Spanish your question to help
Element in the same group contain the same numbers of valence electron
