Answer:
true
covalent bonds are between non metals and nonmetals. and they are sharing electrons.
Answer: C
Explanation:
The one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons. At the next energy level, there are four orbitals.
Helium is a chemical element of the atomic number 2, an inert gas that is the lightest member of the noble gas series.
These means, Helium is lighter than air, and for this is why all other balloons may not float.
The helium balloon displaces an amount of air (Just like an empty water bottle displaces an amount of water). As long as the weight of the helium plus the balloon fabric is lighter than the air displaces, the balloon will float in the air.
Answer:
Melting
Explanation:
When you melt a sedimentary rock it becomes magma. Once that magma cools and hardens it becomes an igneous rock.
