Chapter 4.1-4.2 Quiz

Question 1

Which scientist discovered the law of octaves, arranged the known elements in order of increasing atomic mass, and noticed that elements tended to repeat chemical and physical properties every 8 elements?

Answer 1

John Newland

Question 2

What Russian scientist created the first periodic table by atomic mass and properties using observations, predicted that the gaps in the table were elements that weren’t discovered yet and predicted their properties?

Answer 2

Dmitri Mendeleev

Question 3

Who studied spectra lines of elements, determined that elements should be arranged by increasing atomic number/not mass, discovery led to development of modern periodic table, noticed that periodic table has patterns in 2 dimensions-rows and columns?

Answer 3

Henry Mosely

Question 4

What is periodic law?

Answer 4

the repeating physical and chemical properties of elements change periodically with their atomic number

Question 5

T or F: Elements in a group share chemical properties

Answer 5

True

Question 6

What are valence electrons?

Answer 6

an electron found in the outermost shell of an atom

Question 7

T or F: Valence electrons determine the atom’s physical properties.

Answer 7

False. Determines it chemical.

Question 8

What groups are main group elements?

Answer 8

groups 1,2,13-18

Question 9

What are the main group families?

Answer 9

alkali metals, alkali earth metals, halogens, noble gases, metals

Question 10

What are the non-main group families?

Answer 10

transition metals, lanthanide, actinides

Question 11

What family is being described? group 1 elements, extremely reactive, reacts with water, very soft, easily cut, good conductor of electricity

Answer 11

Alkali metals

Question 12

What family is being described? group 2 elements, highly reactive/ slightly less reactive than alkali metals, reacts with oxygen in air, higher melting points than alkali metals

Answer 12

alkali earth metals

Question 13

What family is being described? group 17 elements, most reactive group of nonmetals, reacts to form salts, likely reacts with alkali metals, found in sea water/ within earth’s crust, liquid at room temp. expect for bromine, poisonous when not combined as compounds

Answer 13

Halogens

Question 14

What family is being described? group 18 elements, unreactive due to stable e- configurations, only Kr/ Xe/Rn form compounds, colorless, odorless, tasteless

Answer 14

Noble gases

Question 15

What family is being described? group 13-16 elements, share properties of both metals and nonmetals, few exceptions of reactivity, poor conductors of heat and electricity

Answer 15

Metalloids

Question 16

What family is being described? group 3-12 elements, less reactive than alkali and alkali earth, most sold at room temp. except Hg=liq, good conductors of heat and electricity

Answer 16

transition metals

Question 17

Which family is being described? group 3 elements, highly reactive with halogens, burn easily in air, soft, silver-ish color, “rare earth metals”

Answer 17

Lanthanides

Question 18

What family is being described? group 3 elements, radioactive, highly reactive with nonmetals, soft, silver-ish, “inner transition metals”

Answer 18

Actinides

Question 19

What family is being described? groups 13-16 elements, react to form poisons, good conductors of heat and electricity, silver/grey, malleable

Answer 19

basic metals

Question 20

What family is being described? hydrogen, group 14-16 metals, easily gain electrons, exist at room temp. at gas or solid, poor conductors of heat and electricity

Answer 20

other nonmetals

Question 21

T or F: most elements are metals

Answer 21

true

Question 22

t or f: groups 1-12 are metals

Answer 22

true

Question 23

What are the chemical properties for metals?

Answer 23

easily lose electrons, called electron donors, corrodes easily, reacts with acids

Question 24

What are the physical and chemical properties of nonmetals?

Answer 24

gain electrons, electron acceptors, solids are dull, solids are brittle, poor conductors, low melting and boiling points

Question 25

What are alloys?

Answer 25

a homogenous mixture of two or more metals