Chapter 12 Periodic Table

Question 1

How many neutrons does oxygen have?

Accepted Answer

8

Question 2

On the periodic table, elements that have the same number of valence electrons are in the same

Accepted Answer

group

Question 3

How many groups are there on the periodic table?

Accepted Answer

18

Question 4

What group of elements are man-made and radioactive? Hint: Separate from main table.

Accepted Answer

both a and b

Question 5

Which group has a propert that it is very reactive?

Accepted Answer

alkali metals

Question 6

What is the horizontal row of the periodic table called?

Accepted Answer

period

Question 7

How did Mendeleev arrange the periodic table?

Accepted Answer

atomic mass

Question 8

What word means happening at regular intervals?

Accepted Answer

period

Question 9

What is an example of a non-metal?

Accepted Answer

nitrogen

Question 10

How many neutrons does hydrogen have?

Accepted Answer

0

Question 11

Which group contains very reactive nonmetals?

Accepted Answer

halogens

Question 12

Which element has 8 protons?

Accepted Answer

oxygen

Question 13

Why is hydrogen unique?

Accepted Answer

both b and c

Question 14

What classification of element would conduct electricity and heat, but is brittle and dull?

Accepted Answer

metalloid

Question 15

Which group has 2 valenece electrons?

Accepted Answer

alkaline earth

Question 16

What does the letter O represent?

Accepted Answer

chemical symbol

Question 17

What are the elements to right of the zigzag line called?

Accepted Answer

nonmetals

Question 18

What Russian chemist developed what is now known as The Periodic Table of Elements

Accepted Answer

Mendeleev

Question 19

What are most metals?

Accepted Answer

solid at room temperature

Question 20

Which group does not react with other elements?

Accepted Answer

noble gas

Question 21

What are the metals in groups 3-12 known as?

Accepted Answer

transition metals

Question 22

What element is necessary for a substance to burn?

Accepted Answer

oxygen

Question 23

Which group on the periodic table has two valence electrons in its outer most shell?

Accepted Answer

alkaline-earth metals

Question 24

What do elements in the same period share?

Accepted Answer

energy levels

Question 25

A family is also known as

Accepted Answer

group

Question 26

What classification of elements are dull, bad conductors and on the right?

Accepted Answer

nonmetals

Question 27

What is the number in the upper left hand corner of the box?

Accepted Answer

atomic number

Question 28

What is the chemical symbol for sodium?

Accepted Answer

Na

Question 29

What are dull, non-conductors, and brittle

Accepted Answer

nonmetals

Question 30

What is an example of a metal?

Accepted Answer

iron

Question 31

How do phyiscal and chemical properties of the elements change?

Accepted Answer

across each period

Question 32

What period would have four enegy levels?

Accepted Answer

period 4

Question 33

How is the modern Periodic Table organized?

Accepted Answer

atomic number

Question 34

Where would you find valence electrons?

Accepted Answer

outer most energy level

Question 35

What is an example of a metalloid?

Accepted Answer

silicon

Question 36

What did Mendeleev notice as he started to lay out the elements?

Accepted Answer

repeating pattern

Question 37

How many valence electrons does an atom need to be considered stable?

Accepted Answer

8

Question 38

How many protons does hydrogen have?

Accepted Answer

1

Question 39

The word oxygen tells us...

Accepted Answer

element name

Question 40

Which elements are radioactive and man-made?

Accepted Answer

actinides

Question 41

What states that properties of elements change periodically with the elements atomic number?

Accepted Answer

Periodic Law

Question 42

What group has seven valenece electrons?

Accepted Answer

halogen

Question 43

What are most elements on the periodic table classified as?

Accepted Answer

metals

Chapter 12 Periodic Table

Questions 43

Chapter 12 Periodic Table

Questions 43