periodic table of elements

Question 1

who is the father of the periodic table?

Answer 1

Dmitri Mendeleev

Question 2

what does “periodic” also mean?

Answer 2

“pattern”

Question 3

how did Dmitri Mendeleev order elements?

Answer 3

based on atomic mass

Question 4

who made the modern periodic table?

Answer 4

Henry Moseley

Question 5

what did Henry Moseley change the periodic table to?

Answer 5

changed the order of elements to be organized by atomic number

Question 6

what does the atomic number determine?

Answer 6

chemical property

Question 7

what are vertical columns?

Answer 7

groups or families

Question 8

what are horizontal columns?

Answer 8

rows or periods

Question 9

what do elements in the same group/family have?

Answer 9

have similar chemical properties

Question 10

where is the location of metals?

Answer 10

to the left of the metalloids

Question 11

what metal is not solid at room temp?

Answer 11

Mercury

Question 12

what are the 5 main characteristics of metals?

Answer 12

1. lustrous (shiny)
2. malleable (hammered without breaking)
3. ductile (drawn into thin wire)
4. good conductors for heat & electricity
5. forms cations

Question 13

what happens in cations?

Answer 13

lose electrons and become positively charged

Question 14

where is the location of nonmetals?

Answer 14

right to the metalloids

Question 15

what element is not right to the metalloids, but included in the nonmetal group?

Answer 15

Hydrogen

Question 16

what are the 4 main characteristics of nonmetals?

Answer 16

1. dull
2. poor conductors
3. solids are brittle (easy to break)
4. forms anions

Question 17

what happens in anions?

Answer 17

gain electrons and become negatively charged

Question 18

what are the 2 other terms for metalloids?

Answer 18

1. “semimetals”
2. “stair step elements”

Question 19

what are the properties of metalloids?

Answer 19

includes both properties of metals and nonmetals

Question 20

what group are the alkali metals?

Answer 20

1A

Question 21

what element is excluded in the alkali metals group?

Answer 21

Hydrogen

Question 22

alkali metals are the most ________ metals

Answer 22

reactive

Question 23

how many valence electrons are in alkali metals?

Answer 23

1

Question 24

how is the reactivity for Hydrogen?

Answer 24

very reactive

Question 25

Hydrogen shows properties most similar to what group?

Answer 25

nonmetal

Question 26

what group is 2A?

Answer 26

alkaline earth metals

Question 27

how many valence electrons in alkaline earth metals?

Answer 27

2

Question 28

what are the groups 3-12 called?

Answer 28

transition metals

Question 29

what are the 2 groups of inner transition metals?

Answer 29

1. Lanthanides 2. Actinides

Question 30

inner transition metals are what type of elements?

Answer 30

radioactive

Question 31

what is group 7A called?

Answer 31

halogens

Question 32

what group is the most reactive nonmetals?

Answer 32

halogens

Question 33

how many valence electrons do halogens have?

Answer 33

7

Question 34

the noble gases are in which group?

Answer 34

8A

Question 35

which group is the least reactive elements?

Answer 35

noble gases

Question 36

what are inert gases?

Answer 36

chemically inactive gases, so no chemical reactions

Question 37

how many valence electrons does group 8A have?

Answer 37

a full valence electron shell, 8 valence electrons

Question 38

which element in the noble gases does not have a total of 8 valence electrons?

Answer 38

Helium has 2 valence electrons

Question 39

how are diatoms remembered?

Answer 39

start at 7, make a 7, Hydrogen is the weird one

Question 40

what are diatoms?

Answer 40

the elements that are only stable as 2 atoms of the same or different chemical elements

Question 41

what are the 7 diatomic elements?

Answer 41

1. Br2 = Bromine 2. I2 = Iodine 3. Cl2 = Chlorine 4. O2 = Oxygen 5. H2 = Hydrogen 6. F2 = Fluorine 7. N2 = Nitrogen

Question 42

what are the 7 metalloids?

Answer 42

1. boron 2. silicon 3. germanium 4. arsenic 5. antimony 6. tellurium 7. polonium

Question 43

what are the 2 elements that are liquid at room temp?

Answer 43

1. mercury 2. bromine

Question 44

what are the 10 elements that are gases at room temp?

Answer 44

1. hydrogen 2. neon 3. oxygen 4. nitrogen 5. fluorine 6. chlorine 7. helium 8. argon 9. krypton 10. xenon

Question 45

what are the 18 non metals of the periodic table?

Answer 45

1. hydrogen 2. carbon 3. nitrogen 4. oxygen 5. fluorine 6. phosphorous 7. sulfur 8. chlorine 9. selenium 10. bromine 11. iodine 12. astatine 13. helium 14. neon 15. argon 16. krypton 17. xenon 18. radon

Question 46

what are the 6 alkali metals?

Answer 46

1. lithium 2. sodium 3. potassium 4. rubidium 5. cesium 6. francium

Question 47

what are the 6 alkaline earth metals?

Answer 47

1. beryllium 2. magnesium 3. calcium 4. strontium 5. barium 6. radium

Question 48

what are the 5 halogens on the periodic table?

Answer 48

1. fluorine 2. chlorine 3. bromine 4. iodine 5. astatine

Question 49

what are the 6 noble gases?

Answer 49

1. neon 2. helium 3. argon 4. krypton 5. xenon 6. radon

Question 50

what are the 7 remaining elements not in a group/family?

Answer 50

1. aluminum 2. gallium 3. indium 4. tin 5. thallium 6. lead 7. bismuth

Question 51

what are the inert gases?

Answer 51

8A noble gases