Chapter 5

Question 1

A description of how the elements differ from one to another is found in an unexpected simple form

Answer 1

Periodic table

Question 2

Characteristics of Hydrogen.

Answer 2

• can lose or gain an electron
• used in ammonia and rocket fuel
• it is colorless, odorless, and a tasteless gas

Question 3

What did Medeleev do?

Answer 3

Organized the table by atomic mass, left blanks where properties didn’t fit, and is credited for the current table.

Question 4

What did Mosley do?

Answer 4

Arranged the table by the atomic number then all the elements fit (electrons)

Question 5

Man made, artificial elements

Answer 5

Transuranium elements

Question 6

A negatively charged ions

Answer 6

Anions

Question 7

Positively charged ions

Answer 7

Cations

Question 8

The difference form the center of an atoms nucleus to its outermost electron

Answer 8

Atomic radius

Question 9

What are vertical columns called?

Answer 9

Families or groups

Question 10

What are the horizontal rows called?

Answer 10

Periods

Question 11

The chemist who developed the electronegativivity scale of the elements, he created the measurements.

Answer 11

Linus Paulings

Question 12

Minimum energy required for an atom

Answer 12

First ionization energy

Question 13

The most important property

Answer 13

Electron negativity

Question 14

Forms salts and it comes from the Greek language

Answer 14

Halogens

Question 15

Elements that combine with oxygen end with what?

Answer 15

Oxide

Question 16

The amount of energy required to add an electron to a neutral atom to form a negative ion, or anion, and it measures how strongly an atom attracts additional electrons

Answer 16

Electron affinity

Question 17

The measure of attraction between the nucleus and valence electrons (a measure of an atoms ability to attract and hold electrons in a molocule)

Answer 17

Electron negativity

Question 18

What are some properties of alkali metals?

Answer 18

• soft, shiny, conduct electricity well
• some of the out reactive metals
• they are eager to lose the lone outer electron

Question 19

What are some properties of alkaline metals?

Answer 19

• they have two electrons to give
• they are less reactive
• used for lighting and magnesium

Question 20

What are some properties of transition metals?

Answer 20

• heavy, hard, and conduct electricity
• range from gold to iron
• they are used for decoration and electricity

Question 21

What are some properties of post transition metals?

Answer 21

• might be shiny, heavy, and conduct electricity
• some are some aren’t
• used in aluminum and alloys

Question 22

What are some properties of halogens?

Answer 22

• the most reactive is Florine
• it is used in our teeth
• chlorine is used in pools and bleach

Question 23

What are some properties of noble gasses?

Answer 23

• colorless, odorless, and tasteless gas

- has eight full valence electrons

Question 24

Who has the strongest electromagnetic negativity?

Answer 24

Florine

Question 25

The properties of elements vary with their atomic number in a periodic way

Answer 25

Modern period law