Atomic Structure

Question 1

Atomic number

Answer 1

number of protons in the nucleus of an atom
(num of postive charges and negative = 0 also called neutral or num of elcectrons)

Question 2

Atoms are neutral meaning:

Answer 2

Num of electrons = num of protons

Question 3

Isotopes

Answer 3

Atoms that have same number of protons but different number of neutrons
Ex: c12 and c14 isotopes of carbon

Question 4

Mass number

Answer 4

Total number of protons and neutrons
(Not given on the peidiroci table)

Question 5

Average Atomic Mass

Answer 5

The atomic mass of an element when an isotopes are taken into consideration

Question 6

Ions:

Answer 6

just atoms that have lost or gained electrons

Question 7

How does an atom become an ion?

Answer 7

When an atom loses or gains electrons it becomes an ion

Question 8

Atoms:

Answer 8

Are empty space

Question 9

Nuetron

Answer 9

= Mass number- atomic mass num

Question 10

Electron

Answer 10

= Atomic num- charge

Question 11

Isotopes similarities

Answer 11

• Composed of the same element
• Have the same number of protons – Same atomic num

Question 12

Isotopes differences

Answer 12

• Mass number
• num of neutrons

Question 13

Net charge

Answer 13

= protons-electrons