Upgrade to remove ads
Periodic Table of Elements
6.1 and 6.2-Chemistry
Terms in this set (80)
d-block elements are usually characteristized by a filled outermost oribtal energy level of n, amd
In the late 1700s, French scientist ___________________ _____________ (1743-___________) complied a list of all elements that were known at the time.
Lavoisier's list contained ________ elements organized into _________ categories.
The 1800s brought a large increase in the number of _____________ elements.
The advent of ________________ , which was used to break down compounds into their components, and the development of the __________________, which was used to identify the newly ____________________ elements played major roles in the advancement of chemistry.
The __________________ revolution of the mid-1800s also played a major role, which led to the development of many new chemistry-based industries, such as the manufacture of _________________, soaps, dyes, and fertilizers.
By __________ there were over ________ known elements.
A significant step toward this goal came in ___________, when chemists agreed upon a method for accurately determining the atomic ____________ of the elements.
Until this time, different chemists used different mass ___________ in their work, making the results of one chemist's work hard to reproduce by another.
With newly agreed-upon atomic masses for the elements, the search for relationships between atomic mass and elemental _______________, and a way to organize elements began in earnest.
In 1864, English chemist _____________ ________________ (1837-18____) proposed an organizational scheme for elements.
He noticed that when the elements were arranged by increasing atomic __________, their properties repeated every _____________ element.
A pattern such as this is called periodic because it repeats in a ________________ manner.
Newlands named the periodic relationship: law of _____________ after the musical octave in which notes repeat every eighth note.
Newlands organized ________ of the elements known in the mid-1860s.
Why was Newlands law not accepted? (2)
1. Because the law did not work for all of the known elements
2. Also because the use of the word octave was harshly criticized by fellow scientists who thought that the musical analogy was unscientific
Although Newlands law was not accepted, was it correct?
Yes, because the properties of elements do repeat in a periodic way.
In 1689, German chemist ________________ ________________- (1830-18____) and Russian chemist ______________ ____________ (1834-19_____) each demonstrated a connections between atomic ______ and the ______________ of elements.
Why is Mendeleev given more credit than Meyer?
Because he published his organizational scheme first
Mendeleev noticed that when elements were ordered by increasing atomic ____________, there was a periodic pattern in their properties.
By arranging the elements in order of increasing atomic mass into _________________ with similar properties, Mendeleev organized the elements into a _____________ ____________.
Why was Mendeleev's table widely accepted?
Because he predicted the existence and properties of undiscovered elements that were later found
Mendeleev left blank spaces in the table where he thought the ___________________ elements should go.
He was able to predict the properties of _________, __________________, and ________________.
Why was Mendeleev's table not correct?
because after several new elements were discovered and their atomic masses were accurately determined, it was found that some elements in his table were not in the correct order.
Arranging elements by atomic mass resulted in several elements being placed in groups of elements with _________________ properties.
In 1913, English chemist, ________________ ___________ (187-19___) discovered Mendeleev's problem because he discovered that atoms of each element contain a unique number of protons in their nuclei- the number of protons being equal to the atoms _____________ _________________.
Henry Mosely- 1915-atomic number
By arranging elements in order of increasing atomic __________, the problems with the order of the elements in the periodic table were solved.
The statement that there is a periodic repetition of chemical and physical properties of the elements when they are arranged by increasing atomic number is called the _______________ _________.
columns= _____________ or _______________
Groups or families
beginning with hydrogen in period 1, there are ______ periods.
Each group is numbered 1 through ____.
Which group is oxygen in?
The elements in groups ______, _____, and ____ to _____ have a wide range of chemical and physical properties. They are referred to as the main group, or _______________ _____________.
1,2, and 13 to 18- representative elements
The elements in groups_______ to ___ are referred to as the ______________ elements.
3 to 12- transition elements
Elements are classified as _______, ____________, or _____________.
metals, nonmetals, or nonmetals
Elements that are shiny when smooth and clean, ____________ at room temperature, and good conductors of heat and electricity are called _________________.
Most metals are _____________ and ______________, meaning that they can be pounded into thin sheets and drawn into wires.
malleable and ductile
Most representative elements and all transition elements are _____________.
What is the first metalloid? and the last?
Except for _____________, all of the elements on the left side of the table are _______________.
The group one elements, except for hydrogen, are known as the ________________ metals.
Because alkali metals are so __________-, they usually exist as compounds with other elements.
The __________________-__________________ metals are in group 2. These elements are also highly _______________.
Because ___________________ is a solid and relatively light it is used in the fabrication of electronic devices.
The transition elements are divided into _____________ metals and ______________ _________________- metals. The two sets of inner transition metals, known as the ________________ and _______________ series are located along the bottom of the periodic table.
transition metals and inner transition metals- lathaninde and actinide series
Lanthanides is _____________, actinides are __________________.
The rest of the elements in groups 3 to 12 are _____________ metals.
Elements from the lanthinde series are used extensively as _______________, or substances that emit light when struck by electrons.
Because it is strong and light, the transition metal _______________ is used to make frames for bicycles and eyeglasses.
nonmetals are on the ____________ side
Nonmetals are elements that are generally ___________ or brittle, dull-looking _____________.
They are poor conductors of ______________ and _________________.
heat and electricity
The only nonmetal that is a liquid at room temp, is _________________.
The most abundant element in the human body is the nonmetal ___________---, which constitutes to 65% of the body mass.
Group 17 has highly ______________ elements that are called __________________.
Halogens are often parts of __________________. Fluorine is added to drinking water to prevent ____________ _____________.
The extremely nonreactive group 18 elements are called the ______________ _________________ and are used in lasers, light bulbs, and neon signs.
MEtalloids have both physical and chemical properties of _____________ and_________________.
metals and nonmetals
____________ and ___________________ are used in computer chips and solar cells.
silicon and geranium
All four configurations have a single electron in their _____________ orbitals.
electrons in the highest principal energy level on an atom= __________ _________
Atoms in the same group have similar __________ properties because they have the same number of ________________ electrons.
The energy level of an element's valence electron indicates the ___________________ on the periodic table in which it is in.
Helium has __________ valence electrons but is in group _______.
2- group 18
Group 1 elements have partially filled ____ orbitals containing 1 valence electron. Electron configuration ends in:
Group 2 elements have completely filled ___ orbitals containing two valence electrons.
Electron configuration ends in:
Because ______ orbitals hold two electrons at most, the s-block spans ____ groups.
There are no ________ block elements in period 1 because the p sub level does not exist for the the first principal energy level (n=1)
The _______ block spans 6 groups because the three p orbitals can hold a max of ____ electrons.
Noble gases in the p block are special because their atoms are so ________ that they undergo virtually no chemical reactions.
s and p block = ________________ elements
D block elements are usually characterized by a filled outermost s orbital of energy level n, and filled or partially filled d orbitals of energy level n-_________
As you move across a period, electrons fill the ______ orbitals.
The 5 d orbitals can hold a total of _______ electrons, so the d block spans ___ groups on the table.
The f block is characterized by a filled, or partially filled outermost s orbital, and a filled or partially filled 4f and 5f orbitals. The electrons of the f sublevel do not fill their orbitals in a ___________________ manner.
Because there are 7 f orbitals holding up to a max of 14 electrons, the f block spans 14 ____________ of the table.
As you proceed down through the periods, the principal energy level increases, and so does the number of ________ containing electrons.
is the periodic able still being worked on?
YOU MIGHT ALSO LIKE...
Chemistry: Periodic Law
Chemistry Chapter 6
chemistry chapter 5-6test
Chapter 6 Test- Physical Science
OTHER SETS BY THIS CREATOR
BIO 102 EXAM 4
BIO 102 Midterm 3
Bio 102 Midterm 2
OTHER QUIZLET SETS
Physical Science Final- Study Questions
MB-LEC Regulation of Gene Expression
Unit 2 Test Review
INTG BUS POLICY--EXAM 2