Ihave two questions, i will make this 20 points (10 points per question)

1. when a chemical reaction occurs, atoms are never
a. ionized
b. rearranged
c. destroyed
d. vaporized

2. most reactions speed up when
a. the temperature decreases
b. equilibrium is achieved
c. the concentration of the products increases
d. the reactant is in small pieces

answer, i'll make you brainiest answer : )

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.