Salesian High School Elements and atoms Chemistry quiz The
... 1) The scientist who used alpha particles to bombard a thin film of gold, and proposed that most of
the volume of an atom is empty space because most of the alpha particles went straight through
Chemistry of life
... – Non-examples: true vacuum (not what you
clean your house with)
... 2. Describe how ionization energy and electronegativity change as you move from
left to right along the periodic table and from top to bottom. Explain how all
three of these plays a role in determining whether an atom “wants” to give away
or take electrons.
3. Define what an atom’s atomic radius is. ...
Periodic Table of Elements * Study Guide
... Study and understand the following:
Atomic Structure: How to find an element’s:
what two particles make up the atomic mass?
what makes up the atom’s volume?
# of protons
Electrical charge of proton, electron, neutron
# of electrons
# of neutrons
group # ...
Bill Nye Atoms Workseet
... In Bill’s model, how far away is the electron from the nucleus? ______________________________________
If atoms are mostly empty space, how come they act like a solid?____________________________________
Atoms are the basic ____________________
_____________________ of all matter.
With hydrogen in H ...
Chemistry Semester One Exam Review Name:
... 11. Write the electron configurations for the following elements.
LithiumNitrogenZincBromineBarium12. What is the characteristic set of valence electrons for the following groups on
the periodic table?
Alkali metals (1); alkaline earth metals (2); halogens (17); noble gases (18)
... Mendeleev- First Periodic
Table ( 1869)
• Grouped by atomic
mass & chemical
• Blank spaces were left
to add predicted
September 28th Notes
... Atomic Structure
Element: matter that is composed of one type of atom.
Elements are abbreviated in scientific shorthand- either a letter or a pair of letters
called a chemical symbol. Ex- Aluminum =Al Copper=Cu
Atom- smallest piece of matter that still has the properties of the element.
Protons- pos ...
Chem 400 Chem 150 REVIEW SHEET Amanda R
... Atoms, Molecules, Ions – fundamentals of elements
o Protons, electrons and neutrons make up an atom
o Atoms make up molecules, all matter is made of atoms
o Protons and neutrons are in the nucleus, and electrons are buzzing outside
the nucleus around the nucleus in orbitals
o # of protons defines an ...
... (a) The diameter of an atom is less than the diameter of its nucleus.
(b) The relative atomic mass of an atom is the mass of an atom relative to an atom of 12C.
(c) p-orbitals can contain a maximum of 10 electrons.
(d) The first ionisation energy of an element is the energy input (in kg mol-1) requi ...
Fall Final Exam Review Questions
... 40. Draw the Lewis Dot structures for the following: Potassium, Carbon, Iodine and Xenon?
41. What are properties of metals and where are they generally located on a periodic table?
42. What are properties of nonmetals and where are they generally located?
43. What are properties of metalloids and w ...
Chemistry Test Review – 8th Science Vocabulary: Element atom
... The difference between mass number and atomic mass
The charge and location of each type of subatomic particle (proton, neutron,
Which ones have the most energy
Which ones have the least energy
Trends in the Periodic Table
Characteristics of Metals ...
... The chemical properties of elements are related to the
energy changes that take place when atoms lose, gain
or share electrons to obtain a filled valence shell.
element - Mrs. Phillips` Physical Science Webpage
... • The periodic table is arranged by increasing atomic number.
– During Mendeleev’s time, this arrangement left several blanks,
however, the table exhibited a regularly repeating pattern, which
could be used to predict the properties of elements that had not
been discovered yet.
– He was proven right ...
Atom - Sites
... •All compounds are molecules but not all
molecules are compounds. (ex. H2O vs. O2)
•Molecules can also join together to form
•Many, many repeating small molecules
joined together form a polymer.
Name Period _____ Chemistry Review
... ____ 16. A(n) mixture is made of two or more substances—elements, compounds, or both—that are together in
the same place but are not chemically combined. _________________________
____ 32. The elements in a group of the periodic table have similar characteristics.
Periodic Table Review Key
... 1. Which element has the smallest atomic number?
2. Which element has the largest atomic number?
3. Which non-metal has the smallest atomic mass?
4. Which metal has the largest atomic mass?
5. Which elements are considered good conductors? C,E,D,
6. Which element is considered semi-conductor ...
Extended periodic table
An extended periodic table theorizes about elements beyond element 118 (beyond period 7, or row 7). Currently seven periods in the periodic table of chemical elements are known and proven, culminating with atomic number 118. If further elements with higher atomic numbers than this are discovered, they will be placed in additional periods, laid out (as with the existing periods) to illustrate periodically recurring trends in the properties of the elements concerned. Any additional periods are expected to contain a larger number of elements than the seventh period, as they are calculated to have an additional so-called g-block, containing at least 18 elements with partially filled g-orbitals in each period. An eight-period table containing this block was suggested by Glenn T. Seaborg in 1969. IUPAC defines an element to exist if its lifetime is longer than 10−14 seconds, which is the time it takes for the nucleus to form an electronic cloud.No elements in this region have been synthesized or discovered in nature. The first element of the g-block may have atomic number 121, and thus would have the systematic name unbiunium. Elements in this region are likely to be highly unstable with respect to radioactive decay, and have extremely short half lives, although element 126 is hypothesized to be within an island of stability that is resistant to fission but not to alpha decay. It is not clear how many elements beyond the expected island of stability are physically possible, if period 8 is complete, or if there is a period 9.According to the orbital approximation in quantum mechanical descriptions of atomic structure, the g-block would correspond to elements with partially filled g-orbitals, but spin-orbit coupling effects reduce the validity of the orbital approximation substantially for elements of high atomic number. While Seaborg's version of the extended period had the heavier elements following the pattern set by lighter elements, as it did not take into account relativistic effects, models that take relativistic effects into account do not. Pekka Pyykkö and B. Fricke used computer modeling to calculate the positions of elements up to Z = 184 (comprising periods 8, 9, and the beginning of 10), and found that several were displaced from the Madelung rule.