Sixth-grade students study the relationship between potential and kinetic energy. Which statement gives an example of potential energy converting into kinetic energy?
A.
A soccer player kicks a stationary ball toward the goal.
B.
A rollercoaster at the top of an incline and a rollercoaster rolling down an incline.
C.
O
A bow and arrow pulled back and the string on the bow and arrow released.
D.
All of the above

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.