Answer:
burning wood be a chemical change because it wouldn’t be able to go back to its original form. A physical change would be a broken pencil. The pencil is still a pencil, it’s just a physical change.But if it were burned it would be a chemical change.
Explanation:
Giant covalent substances have many atoms joined together by covalent bonds. Diamond, graphite and graphene are forms of carbon with different giant covalent structures.
Giant molecular are structure such as graphite or diamond. All bonds are through covalent. They have the same bond throughout the structure without changing.
Answer:
The symbol for this ion is Ni^2+
Not sure though
Answer:
a. an increase in the number of protons
c. conversion of one or more protons to electrons
d. a decrease in atomic number
e. conversion of one or more neutrons to protons
Explanation:
a. an increase in the number of protons will affect the ratio which relies on number of protons
b. removing electrons from the valence shell will not affect the ratio because electrons do not form part of the ratio
c. conversion of one or more protons to electrons will affect the ratio which relies on number of protons
d. a decrease in atomic number will will affect the ratio which relies on number of protons, which is another name for atomic number.
e. conversion of one or more neutrons to protons will affect the ratio which relies on number of protons
