test 5

Question 1

who mostly gets the credit for the development of the modern periodic table?

Answer 1

Dmitri Mendeleev

Question 2

who arranged the elements by their atomic masses?

Answer 2

Dobereiner
Newlands
Mendeleev

Question 3

who 1st arranged the elements in order of increasing atomic numbers?

Answer 3

Moseley

Question 4

a vertical column of elements that usually have similar physical and chemical properties due to their similar electron configuration

Answer 4

group or family

Question 5

horizontal rows of elements

Answer 5

period or series

Question 6

appears at the top left of the cell

Answer 6

atomic number

Question 7

appears above the symbol

Answer 7

name

Question 8

1, 2, or 3 letters that is the most prominent item in the cell

Answer 8

symbol

Question 9

weighted average that’s always given in four significant digits.

Answer 9

atomic mass

Question 10

The number and location of electrons in each occupied energy level in the neutral atom are listed below the atomic mass

Answer 10

electron structure by energy level

Question 11

the distance from the center of an atom’s nucleus to its outermost electron

Answer 11

atomic radius

Question 12

atomic radius_ from left to right and _ from top to bottom

Answer 12

decrease, increase

Question 13

positive ions that are _ than their parent atoms because they have fewer electrons

Answer 13

cations, smaller

Question 14

what type of atoms form cations easiest

Answer 14

metals

Question 15

for a single neutral atom in the gaseous state the minimum energy required to remove the first electron from its outermost shell to make it a cation

Answer 15

first ionization energy

Question 16

the amount of energy required to add an electron to a neutral atom to form a negative ion, or anion

Answer 16

electron affinity

Question 17

what are atoms that have lost or gained electrons?

Answer 17

ions

Question 18

what is the measure of the attraction between the nucleus and valence electrons?

Answer 18

electronegativity

Question 19

what is the lightest element and the most abundant in the entire universe?

Answer 19

hydrogen

Question 20

what is the most abundant alkali metal?

Answer 20

sodium

Question 21

the group 2 (2a) metals which contain 2 valence electrons

Answer 21

alkaline-earth metals

Question 22

_compounds are the basis for life

Answer 22

carbon

Question 23

describe oxygen

Answer 23

gas that form about 21% of the earth’s atmosphere. it is slightly soluble in water and is the most abundant element by mass in the earth’s crust

Question 24

halogens form_ when combined with metals

Answer 24

salts

Question 25

why are noble gases called noble gases?

Answer 25

they do not react with other elements except under unusual conditions of pressure and temperature

Question 26

which elements conduct heat and electricity well and are usually malleable?

Answer 26

metals

Question 27

which elements are usually gases or soft, crumbly solids

Answer 27

non metals

Question 28

metals such as zinc, calcium, and iron combine with sulfur to form

Answer 28

sulfides

Question 29

oxygen combines with other elements to form

Answer 29

oxides

Question 30

where are alkali metals

Answer 30

group one period 2 and down (group one excluding hydrogen)

Question 31

where are alkaline earth metals

Answer 31

all of group 2

Question 32

where are transition metals

Answer 32

groups 3-12 excluding the last element in both group 11 and 12

Question 33

where is the boron family

Answer 33

group 13 excluding the last element

Question 34

where is the carbon family

Answer 34

group 14 excluding the last element

Question 35

where is the nitrogen family

Answer 35

group 15 excluding the last element

Question 36

where is the oxygen family

Answer 36

group 16 excluding the last element

Question 37

where are the halogens

Answer 37

group 17 excluding the last element

Question 38

where are the noble gases

Answer 38

group 18 excluding the last element

Question 39

how many electrons are in helium's outer shell

Answer 39

2

Question 40

members of the halogens

Answer 40

``` fluorine chlorine bromine iodine astatine ```

Question 41

members of the noble gases

Answer 41

``` helium neon argon krypton xenon radon ```

Question 42

members of the alkali metals

Answer 42

``` lithium sodium potassium rubidium cesium francium ```

Question 43

members of the alkaline earth metals

Answer 43

``` beryllium magnesium calcium strontium barium radium ```

Question 44

define noble gases

Answer 44

Group 18 (8A) elements. They have full outer energy levels making them very stable and essentially inert.