Scientists, families, and perodic table

Question 1

Democritus

Answer 1

430 B.C. “atomos”

Question 2

Dalton’s Atomic Theory

Answer 2

elements that are the same look the same/ elements that are
different look different, one element can’t change into another element,
compounds are 2 or more elements in a ratio

Question 3

Thomson

Answer 3

discover negatively charged particles electrons

Question 4

Rutherford

Answer 4

discovered positively charged particles protons and nucleus

Question 5

Bohr’s Model & Clouds of Electrons

Answer 5

electrons travel in a certain pathway and S, P, D, & F

Question 6

Modern Atomic Model - Who & When

Answer 6

discovered neutrons so atoms have a nucleus with protons
& neutrons and electrons on the outside (1932 - James Chadwich)

Question 7

Particle charges

Answer 7

most atoms are neutral so same number of protons and electrons

Question 8

Isotopes

Answer 8

atoms with different number of neutrons than protons - highly unstable

Question 9

Dmitri Mendeleev

Answer 9

put elements on notecards and arranged them based on atomic mass, and density to see a pattern did not work

Question 10

Henry Mosley - Periodic Table & When

Answer 10

arranged the elements based on atomic number -1913

Question 11

Organization of Periodic Table

Answer 11

Periods (horizontal) Groups (vertical)
Metals (left)
Non-metals (right)
Metalloids (middle)

Question 12

Nuclear Fusion

Answer 12

2 nuclei combined due to heat or pressure

Question 13

Metals: Physical Properties

Answer 13

Luster (shiny)
Malleable (flat sheets)
Ductile (run into wire)
High Conductivity (electrons flow through)

Question 14

Metals: Chemical Properties

Answer 14

Reactivity (easily react with other elements)
Corrosive (rusting)

Question 15

Alkali metals

Answer 15

Group 1 – react easily to get rid of the 1 electron

Question 16

Alkaline Earth metals

Answer 16

Group 2 – react easily to get rid of 2 electrons - hard, brittle

Question 17

Transitional Metals

Answer 17

Group 3-12 / hard and shiny and good conductors

Question 18

Actinides

Answer 18

Second row of F shell & used as an alloy

Question 19

Lanthanides

Answer 19

Top row of the F shell & used as an alloy

Question 20

Nonmetal Properties 4

Answer 20

1. Poor Conductors
2. Not Malleable
3. Not ductile
4. Dull

Question 21

Carbon Family Characteristics

Answer 21

gain, share, lose electrons, chains of carbon in living things - Group 14

Question 22

Nitrogen Family Characteristics

Answer 22

doesn’t react with other elements, diatomic elements - Group 15

Question 23

Oxygen Family Characteristics

Answer 23

diatomic element and will easily combined with 2 electrons - Group 16

Question 24

Halogen Family Characteristics

Answer 24

“salt forming elements” - deadly in pure form very reactive - Group 17

Question 25

Noble Gases

Answer 25

do not bond with others found in Earth’s atmosphere - Group 18

Question 26

Hydrogen

Answer 26

simplest and smallest element - pure element bonds easily

Question 27

Metalloids Characteristics

Answer 27

brittle, hard, somewhat reactive - varied ability of electrical conductivity

Question 28

Diatomic elements

Answer 28

elements that bond with themselves