Answer:
A
Explanation:
only one type of atom= (PURE SUBSTANCE not mixture)
is atom chemically bonded to another atom? (NO- element, not compound)
Answer:
Oxygen
Explanation:
In a molecule of water ie H20, Oxygen is more electronegative and hence attracts more electrons to itself making Hydrogen partially positive ♂️
Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules. ... They can even join "head-to-tail" to make rings of carbon atoms.
Answer:
El aparato circulatorio unidireccional transporta sangre a todas las partes del cuerpo. Este movimiento de la sangre dentro del cuerpo se denomina «circulación». Las arterias transportan sangre rica en oxígeno del corazón y las venas transportan sangre pobre en oxígeno al corazón.
Explanation:
