Module 4.1 & 4.2 Quiz

Question 1

What did John Newlands(1865) propose?

Answer 1

The law of octaves

Question 2

How did Newlands arrange the known elements on the periodic table?

Answer 2

He arranged them in order of increasing atomic mass

Question 3

What did Newlands notice about the patterns of atoms upon the periodic table? (Think of his rule)

Answer 3

He noticed that atoms tended to repeat chemical and physical properties every 8 elements

Question 4

What is a chemical property?

Answer 4

A characteristic of a substance that can be observed in a chemical reaction

Question 5

What is the only way we will be able to see a chemical property?

Answer 5

We can only see a chemical property once the substance actually changes its makeup

Question 6

What is a physical property?

Answer 6

A characteristic of matter that does not involve itself with a change in the substance’s chemical composition

Question 7

What did Dmitri Mendeleev (1869) create?

Answer 7

He created the first periodic table by atomic mass and properties

Question 8

What did Dmitri Mendeleev to create his periodic table?

Answer 8

Newland’s observations and other information

Question 9

How many elements were known during Mendeleev’s time?

Answer 9

63

Question 10

What were the gaps in Mendeleev’s table?

Answer 10

The elements that were yet to be discovered

Question 11

What did Mendeleev find out the order of elements that he could not understand?

Answer 11

He had to switch the order of the some of the elements in order to keep the properties arranged correctly

Question 12

What did Henry Moseley (1913) study?

Answer 12

Spectra lines of electrons

Question 13

What is a spectral line?

Answer 13

A dark or bright line in a uniform and continuous spectrum

Question 14

What did Moseley determine?

Answer 14

Elements should be arranged by increasing atomic number, not atomic mass.

Question 15

What did Moseley’s discovery lead to?

Answer 15

The development of the modern periodic table

Question 16

The periodic table has patterns in what?

Answer 16

Split into rows and columns

Question 17

What is periodic law?

Answer 17

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

Question 18

What is a group (family)?

Answer 18

A vertical column of elements in the periodic table

Question 19

True or False: Elements in a group share chemical properties.

Answer 19

True

Question 20

What is a period (row)?

Answer 20

A horizontal row of elements in the periodic table that has increasing atomic numbers

Question 21

What is a valence electron?

Answer 21

An electron that is found in the outermost shell of the atom

Question 22

What do valence electrons determine?

Answer 22

They determine the atom’s chemical properties

Question 23

Elements in the same ____ have the same number of valence electrons.

Answer 23

Group

Question 24

There can never be more than how many valence electrons?

Answer 24

8

Question 25

What do electron dot diagrams do?

Answer 25

They show the amount of valence electrons

Question 26

Where are the main group elements located?

Answer 26

Groups 1,2, 13-18

Question 27

True or False: Some groups within main-group elements have special names.

Answer 27

True

Question 28

What are the main group families?

Answer 28

Alkali Metals, Alkaline Earth Metals, Halogens, and Noble Gases

Question 29

True or False: Most of the families from the main group are metals.

Answer 29

True

Question 30

What are the non-main group families?

Answer 30

Transition metals, lanthanides, and actinides

Question 31

Alkali Metals are located where?

Answer 31

Group 1 besides H

Question 32

How many valence electrons are in Alkali Metals?

Answer 32

1

Question 33

What are the chemical properties of Alkali Metals?

Answer 33

Extremely reactive, reacts with water

Question 34

What are the physical properties of Alkali Metals?

Answer 34

Very soft and easily cut

Question 35

Alkali-Earth Metals are located where?

Answer 35

Group 2

Question 36

How many valence electrons are in Alkali-Earth Metals?

Answer 36

2

Question 37

What are the chemical properties of Alkali-Earth Metals?

Answer 37

Highly reactive, but slightly less reactive than alkali metals

Question 38

What are the physical properties of Alkali-Earth Metals?

Answer 38

Higher melting points than the alkali metals

Question 39

What happens when Alkali-Earth Metals give away their 2 valence electrons?

Answer 39

Light is emitted

Question 40

Halogens are located where?

Answer 40

Group 17

Question 41

How many valence electrons are in Halogens?

Answer 41

7

Question 42

What are the chemical properties of Halogens ?

Answer 42

Most reactive group of nonmetals, reacts to form salts, likely to react with alkali metals

Question 43

What are the physical properties of Halogens ?

Answer 43

found in sea water and within the Earth's crust

Question 44

True or False: Halogens are poisonous when they are not combined as compounds.

Answer 44

False

Question 45

Noble gases are located where?

Answer 45

18

Question 46

How many valence electrons are in Noble gases?

Answer 46

8 (except for He)

Question 47

What are the chemical properties of Noble gases?

Answer 47

Very unreactive due to stable e- configurations, Only Kr, Xe, & Rn have been able to form componds

Question 48

What are the physical properties of Noble gases?

Answer 48

Colorless, odorless

Question 49

Metalloids are located where?

Answer 49

Group 13 & 16

Question 50

How many valence electrons are in Metalloids?

Answer 50

Between 3-6

Question 51

What are the chemical properties of Metalloids?

Answer 51

Shares properties of both metals and nonmetals

Question 52

What are the physical properties of Metalloids?

Answer 52

Poor conductors of heat and electricity

Question 53

Transition metals have how many valence electrons?

Answer 53

Varies among elements. most but not all have 2

Question 54

What are the chemical properties of Transition metals?

Answer 54

Less reactive than alkali and alkali-earth metals

Question 55

What are the physical properties of transition metals?

Answer 55

Most are solid at room temperature except hg, good conductors of heat and electricity

Question 56

Transition metals are located where?

Answer 56

Group 3-12

Question 57

True or False: Transition metals are | extremely durable.

Answer 57

True

Question 58

Lanthanides are located where?

Answer 58

Group 3

Question 59

Lanthanides have how many valence electrons?

Answer 59

Most have 1 or 2 valence electrons

Question 60

What are the chemical properties of lanthanides?

Answer 60

Highly reactive with halogens, burns easily in air

Question 61

What are the physical properties of lanthanides?

Answer 61

Soft, silver-ish color, | "rare earth metals"

Question 62

Actinides are located where?

Answer 62

Group 3

Question 63

Actinides have how many valence electrons?

Answer 63

Most have 1 or 2 valence electrons

Question 64

What are the chemical properties of actinides?

Answer 64

All actinides are radioactive, highly reactive with most nonmetals

Question 65

What are the physical properties of actinides?

Answer 65

Soft, silver-ish metals, "inner transition metals" as well as lactinides