Atomic, mass Numbers / protons, neutrons electrons

Question 1

What is equal to the atomic number?

Answer 1

The atomic number is equal to the number of protons of 1 atom of the element

Question 2

What is equal to the mass number?

Answer 2

The mass number is equal to the number of protons + the number of electrons

M= p+é

Question 3

What changes and not changes in a isotope

Answer 3

In a isotope, the atomic number never changes because is the identity of the element. On the other hand the atomic mass change as its a isotope

Question 4

What are isotopes? (Simple definition)

Answer 4

Are atoms with same number of protons but different numbers of neutrons. Diferentes in mass and physical properties, and have almost the same chemical properties

Question 5

What type of isotopes are there?

Answer 5

There are stable isotopes, which do not emit radiation, and there are unstable isotopes, which do emit radiation

Question 6

Characteristics of a stable isotope

Answer 6

• the fist 80 elements of the periodic table have stable isotopes
• stable isotopes can be isued to understand and manage water and land resources due to its properties

Question 7

Unstable isotopes or radioisotopes characteristics

Answer 7

• They emit different levels of radiation
• useful in medicine, industry, agriculture and industrial applications