Answer:
when something is boiling. the temperature increases quickly so B and D are eliminated. So its either A or C. My guess is A
In an exothermic reaction the energy of the product is less than the energy of the reactants.
Answer:
C. Involves a metal and a nonmetal.
Explanation:
Ionic compound involves a metal and a non-metal. Ionic compounds have electrovalent bonds between them.
These compounds are usually made up of metals and non - metals combining to form a unit.
- The metals usually has low electronegativity and transfers it electrons to the non - metal.
- The non-metal has high affinity for the electron.
- The electrostatic attraction between the ions formed results in the ionic bond.
Answer:
Characteristics of Group
Explanation:
The elements of a group show similar chemical properties but there is a gradual variation in the physical properties of the elements in a group.
<span>During aerobic respiration, electrons travel downhill in which sequence?
</span><span>B) food → NADH → electron transport chain → oxygen</span>
