The vertical columns on the periodic table are called |
groups |
The horizontal rows on the periodic table are called |
periods |
Most of the elements in the periodic table are classified as |
metals |
The elements that touch the zigzag line are classified as |
metalloids |
The elements in the far upper right corner are classified as |
non-metals. Most upper right corner starts noble gases. |
Elements in the first group have one outer shell electron and are extremely reactive. They are called |
alkalai metals |
Elements in the second group have 2 outer shell electrons and are also very reactive. They are called |
alkalai earth metals |
Elements in groups 3 through 12 have many useful properties and are called |
transition metals |
Elements in group 17 are known as "salt formers". They are called |
halogens |
Elements in group 18 are very unreactive. They are said to be "inert". We call these the |
noble gases |
The elements at the bottom of the table were pulled out to keep the table from becoming too long. The first period at the bottom called the |
lanthanides |
The second period at the bottom of the table is called the |
actinides |
What is the name of the particle that has a positive charge and is located in the atom’s nucleus? |
proton |
What is the name of the particle that has no charge and is located in the atom’s nucleus? |
neutron |
What is the name of the particle that has a negative charge and is located outside the atom’s |
electron |
Which Groups contain metals so active that they are mainly found in compounds, and rarely |
Group 1 and 2 (alkalai and alkalai earth metals) |
Which elements are noble gases and why is "8 great"? |
noble gases have complete outer shells. The octet rule is achieved and they do not bond because they are already stable. Stable atoms have 8 electrons in the outer shell. |
Which Noble Gas has the most energy shells? |
Radon |
Which element contains more energy, Boron or Aluminum? |
Aluminum |
Is hydrogen a metal or nonmetal? |
nonmetal |
Why is hydrogen placed in the position that it is within the periodic table? |
It has 1 VE, but it has nothing else in common with group 1. |
Give me the chemical symbol for Group 15, period 4 element: |
Arsenic |
How many protons are in the element at the position Group 2, period 7? |
Radium |
What is the number of protons, neutrons and electrons in Bromine? |
protons = 35 electrons = 35 neutrons = 44.904 or 45 |
The atomic number is the same as the |
protons |
The group number is the same as the |
valence electrons |
How are elements arranged on the periodic table? |
According to atomic number |
Do elements in the Noble Gas family share characteristics? |
They do. All members of a group (except Hydrogen and pd 1) share characteristics. Group 8, Noble gases, all have 8 outer electrons (VE), which means they are all stable and do not bond readily. The outer shell of each these elements is already full. |
Do elements in Period 2 share characteristics? Explain. |
NO. For instance, you have Potassium (a highly reactive metal) in Group 1, period 4. If you read across this period you will come across: transition metalsmetalloidhalogennoble gas. They do have the same amount of energy levels, but this does not predict the actual characteristics of an element (reactive, nonreactive, metal/non, etc). |
What is a metalloid and list the elements that fall into this classification. |
These are elements that have some properties of metals and some properties of nonmetals. They are on either side of the ‘staircase’ (except Aluminum) |
Describe the process you would use to determine the amount of neutrons in 1 atom of an element. |
Determine the number of protons (atomic #) and subtract this from the atomic mass (which is protons + neutrons) |
How many valence electrons are in Bromine? |
7 |
Describe the process you would use to determine the number of valence electrons in 1 atom of an element. |
Read the group # from the periodic table. The group number is the same as the number of valence electrons. For groups 13-18, drop the 1. Ex: Group 13 has 3 VE, Group 14 has 4 VE, etc. |
Why are valence electrons important? |
These are the electrons involved in bonding |
This period 3 element is in the Carbon Family |
Silicon |
This Group 2 element has more protons than Carbon but less than Oxygen. |
Nitrogen |
This Alkaline Earth metal has a higher atomic number than Rubidium but less neutrons than Rhodium. |
Strontium |
This element has a atomic number greater than Copper but less than Gallium. |
Zinc |
This Group 2 element has fewer protons than Bromine, but more than sulfur. |
Calcium |
This element has three energy levels and 2 valence electrons. |
Magnesium |
This element has 3 valence electrons and less protons than Magnesium. |
Boron |
This element is the smallest element in the Noble Gas family |
Helium |
This element has more neutrons than any other Noble Gas. |
Radon |
This element is the only non-metal on the left side of the staircase. |
Hydrogen |
Write a clue for Neon. |
This element is in group 18 and has 2 shells. |
This element is in the Halogen family and has 5 energy levels. |
Iodine |
periodic table
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