Answer:
1) chewing breaks food into smaller pieces.
Explanation:
Chewing food changes the <u><em>PHYSICAL </em></u>appearance. The sugars in the other possible answer will completely change the composition of the food. So therefore, chewing breaks food into smaller pieces, is correct.
Elements are grouped into periods and groups . Elements with same number of energy shells are in the same period and elements with the same number of electrons in the outermost energy shells are in the same group.
Reactivity depends on the number of valence electrons. Number of valence electrons the element has will determine if the element needs to gain electrons or give out electrons.
Therefore elements with same number of valence electrons will have similar chemical properties .
When you look at elements in the same group(column) they have similar chemical properties
The answer is B. Non-renewable resources are non-renewable because we cannot renew, or make more, of it. Hope this helps!!!
The azide ion N3- can actually be represented by 3
resonance structures.
(check attached image for the structures)
<span>Among the three, the Structure 1 is the most important
one. While structure 3 almost makes no contribution due to the positive charges
located on the adjacent atoms and the overall higher formal charge.</span>
Answer is: because alkaline metals (group IA metals) are the strongest reducing agents and most reactive metals.
Reducing agent<span> is an element or compound that loses an </span>electron<span> to another </span>chemical species<span> in a </span>redox <span>chemical reaction and they have been oxidized.
Alkaline metals tend to lose only one electron in redox reaction.</span>
