Answer:
4,1,4
Explanation:
Balancing a synthesis equation
If the heating is done on one small area on the top, there will be convection. If the heating is restricted to a small fraction of the heating area, then within that area the heating will go deeper than anywhere else on the surface. Then unheated area will have a shallower region of high temperature. Then some convection will occur in the deeper layers, causing some motion on top.
This happens quite a bit during welding. Convection is very significant in welding, even when the heating is from the top.
<span>c.
reactivity
this is a physical property depends on how reactive something is</span>
<h2><u>
Calcium Carbonate</u>
. Calcium carbonate is another example of a compound with both ionic and covalent bonds. Here calcium acts as the cation, with the carbonate species as the anion. These species share an ionic bond, while the carbon and oxygen atoms in carbonate are covalently bonded.</h2><h2 />
<em>Hope this helps! I hope you have a great rest of your day! Also, if you would, please make me brainliest! <3</em>
