Atomic Structure Vocab

Question 1

smallest particle of element that still remains as property of element

Answer 1

atom

Question 2

small, positively charged center of atom, contains protons and neutrons

Answer 2

nucleuus

Question 3

particle in nucleus with electric charge of 1+

Answer 3

proton

Question 4

electrically neutral particle inside nucleus of atom

Answer 4

neutron

Question 5

particle with electric charge of 1-, surrounds nucleus of atom

Answer 5

electron

Question 6

particle of matter that makes up protons and neutrons

Answer 6

quarks

Question 7

electrons located in outermost shell of atom

Answer 7

valence electron

Question 8

organized list of all known elements that are arranged by increasing atomic number and by changes in chemical and physical properties

Answer 8

periodic table

Question 9

number of protons in atoms nucleus

Answer 9

atomic number

Question 10

sum of number of protons and neutrons in atoms nucleus

Answer 10

mass number

Question 11

atom of element has specific number of electrons

Answer 11

isotopes

Question 12

weighted average mass of elements isotopes according to their natural abundance

Answer 12

average atomic mass

Question 13

uses symbol for elements and dots representing number of electrons in elements outer energy level

Answer 13

electron dot diagram

Question 14

vertical column in periodic table

Answer 14

group

Question 15

horizontal row in periodic table, amount of time it takes one wavelength to pass a fixed amount(seconds)

Answer 15

period