Which scenario would cause a covalent bond to form?
Choose 1
Choose 1

(Choice A)
A

Two atoms share electrons so they can fill their outer shells

(Choice B)
B

One atom loses one or more electrons and the other atom gains one or more electrons

(Choice C)
C

The constant motion of electrons and the creation of charge imbalances bonds two molecules together

(Choice D)
D

A hydrogen atom with a slight positive charge is attracted to a negative charge of another molecule or atom

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger

d

explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.