The periodic table

Question 1

What scientist’s research led to the periodic law?

Answer 1

John Alexander Newlands

Question 2

Periodic law

Answer 2

When elements are arranged in increasing atomic mass, chemical and physical properties form patterns that repeat at regular intervals

Question 3

What evidence can you use to classify elements into the same family?

Answer 3

physical composition, reactivity, chemical properties

Question 4

What are the horizontal rows on the periodic table are called?

Answer 4

Periods

Question 5

What are the horizontal rows on the periodic table are called?

Answer 5

Periods

Question 6

The vertical columns on the periodic table are called

Answer 6

groups/family

Question 7

How many periods are their on the periodic table?

Answer 7

1-7

Question 8

How many vertical columns are on the periodic table?

Answer 8

1-18

Question 9

Why do some elements in the same group have similar chemical and physical properties?

Answer 9

-They have the same number of valence electrons (outermost e- in an orbital)
-They will form the same kinds of ions

Question 10

Alkali metals are found ______ in the periodic table

Answer 10

1st column in the periodic table (group one)

Question 11

Alkali metals are…

Answer 11

-Very reactive silver metals
-always combined with something else in nature (like salt)
-react in water to produce a basic solution
-soft enough to cut with a butter knife

Question 12

The most reactive metal is

Answer 12

Francium

Question 13

Alkaline Earth Metals are found______ on the periodic table

Answer 13

second column (group two)

Question 14

Alkaline Earth Metals are…

Answer 14

-Reactive metals that are combined with nonmetals in nature
-reacts with oxygen to form a compound like XO: MgO
-several of there elements are important nutrients (such as Mg and Ca)

Question 15

Transition Metals are found ______ on the periodic table

Answer 15

groups 3-12

Question 16

Properties of transition metals

Answer 16

-less reactive harder metals
-includes metals used in jewelry and construction
-metals used “as metal”
-wide range of physical and chemical properties

Question 17

Halogens are found in ____ on the periodic table

Answer 17

group 17

Question 18

Properties of halogens

Answer 18

-very reactive, volatile, diatomic, nonmetals
-found combined with other elements in nature
-react with hydrogen to form hydrogen halides (HCl)
-used as disinfectants and used to strengthen teeth

Question 19

Most reactive non-metal is

Answer 19

Fluorine

Question 20

The Nobel Gases are found _____ on the periodic table

Answer 20

in group 18

Question 21

Properties of noble gases

Answer 21

-very unreactive/inert monatomic gases
-used in lighted “neon” signs
-used in blimps to fix the Hindenberg problem
-Have full valance shell (STABLE)

Question 22

Limitation of the Periodic Table include:

Answer 22

-Many properties like boiling points do not vary smoothly within families
-Metal properties between transitions and representative are not consistent
-Hydrogen can behave as a group 1, group seventeen or in its own way. (Most often acts as a nm)