Answer:
There are 8 electrons in the last level. Because of the octet rule.
when the top of the pencil moves in one direction, the bottom end on the ground will move in another, but due to the frictional force it will move by a lesser amount, and the center of mass of the pencil will be accelerated in the horizontal direction due to the force of friction
Answer:
it may be helium according to my knowledge
Answer:
Dome mountains are formed when hot molten material (magma) rising from the Earth's mantle into the crust that pushes overlying sedimentary rock layers upward to form a “dome” shape.
Explanation:
Chemical change is when the nature of something changes. Physical change is when a physical component changes.
Chemical change:
- not easily reversible
- new product formed
- reactants are used (two products form a new one e.g iron and oxygen forms rust)
- heat is released/absorbed
Example: Wood burns, it releases heat, produces CO2 and ash and you cannot reverse the burning.
Physical Change:
- easily reversible
- no new products formed
- is often a state change
Example: Ice melts, water is formed, water can freeze again.
