Question

what is the sum of the neutrons plus protons equal to?
mass number
atomic number
atomic symbol
atomic weight
question 18
2 pts
what is the last stage in the repair of a fracture?
hematoma
inflammation
bony callus
fibrocartilage callus

Explanation:

• For the first question:
• The mass number of an atom is defined as the sum of the number of protons and neutrons in the nucleus of an atom.
• The atomic number is the number of protons in an atom.
• The atomic symbol is a one - or two - letter abbreviation for an element.
• The atomic weight (atomic mass) is the weighted average of the masses of an element's isotopes.
• For the second question:
• In fracture repair, the stages are: hematoma formation (first stage), inflammation, formation of a fibrocartilage callus, and then formation of a bony callus (last stage).

Answer:

• First question: Mass number
• Second question: Bony callus