2015 VCE Chemistry Unit 1 -Miss Fitzsimmons
... Every element in the first column (group one) has one electron in its outer shell. Every element on the second column (group two) has two electrons in the outer shell. As you keep counting the columns, you'll know how many electrons are in the outer shell. There are some exceptions to the order when ...
... Every element in the first column (group one) has one electron in its outer shell. Every element on the second column (group two) has two electrons in the outer shell. As you keep counting the columns, you'll know how many electrons are in the outer shell. There are some exceptions to the order when ...
4.2 Structure of the Atom
... The atomic number (“Z”) of an element equals the number of protons in an atom of that element – The atomic number identifies the atom of that elements – Atoms of different elements have different numbers of protons ...
... The atomic number (“Z”) of an element equals the number of protons in an atom of that element – The atomic number identifies the atom of that elements – Atoms of different elements have different numbers of protons ...
atom
... He thought you could“cut” down matter into pieces, until you reached the smallest possible piece He named these pieces atoms which is Greek for “uncuttable”. ...
... He thought you could“cut” down matter into pieces, until you reached the smallest possible piece He named these pieces atoms which is Greek for “uncuttable”. ...
Solutions - Dynamic Science
... 31) Which one of the following is a renewable energy source? a) Natural gas b) Ethanol c) Uranium d) all of the above 32) Which of the following are carbon neutral fuels? a) Ethanol b) Coal and bio-diesel c) Bio-diesel and natural gas d) Ethanol and coal ...
... 31) Which one of the following is a renewable energy source? a) Natural gas b) Ethanol c) Uranium d) all of the above 32) Which of the following are carbon neutral fuels? a) Ethanol b) Coal and bio-diesel c) Bio-diesel and natural gas d) Ethanol and coal ...
Chapter 2 Atoms, Molecules, and Ions
... 2.7 Ions and Ionic Compounds By gaining or losing one or more electrons neutral atoms become ions. • Cations (metals) are positive • Anions (nonmetals) are negative Ion Charge and the Periodic Table • The charge on an ion can often be determined from an element’s position on the Periodic Table • Met ...
... 2.7 Ions and Ionic Compounds By gaining or losing one or more electrons neutral atoms become ions. • Cations (metals) are positive • Anions (nonmetals) are negative Ion Charge and the Periodic Table • The charge on an ion can often be determined from an element’s position on the Periodic Table • Met ...
atomic number
... You know that neutrons are found in the nucleus of an atom. Under normal conditions, protons and neutrons stick together in the nucleus. During radioactive decay, they may be knocked out of there. Neutron numbers are able to change the mass of atoms, because they weigh about as much as a proton and ...
... You know that neutrons are found in the nucleus of an atom. Under normal conditions, protons and neutrons stick together in the nucleus. During radioactive decay, they may be knocked out of there. Neutron numbers are able to change the mass of atoms, because they weigh about as much as a proton and ...
word-doc Practice for the final exam!
... 9. Precision refers to _______. a. how close a measured number is to other measured numbers b. how close a measured number is to the true value c. how close a measured number is to the calculated value d. how close a measured number is to zero e. how close a measured number is to infinity ...
... 9. Precision refers to _______. a. how close a measured number is to other measured numbers b. how close a measured number is to the true value c. how close a measured number is to the calculated value d. how close a measured number is to zero e. how close a measured number is to infinity ...
400 Formula and Naming Notes
... Formulas and Naming of Ions and Compounds Information Conveyed by a Formula: 1. Which elements are present (chemical symbols) 2. The relative amount of each element present (subscripts which go with the element to their left) 3. Any net charge on the species (# followed by a + or – sign for ions, ne ...
... Formulas and Naming of Ions and Compounds Information Conveyed by a Formula: 1. Which elements are present (chemical symbols) 2. The relative amount of each element present (subscripts which go with the element to their left) 3. Any net charge on the species (# followed by a + or – sign for ions, ne ...
Atomic Theory - chemmybear.com
... (d) For magnesium, the difference between the second and third ionization energies is much larger than the difference between the first and second ionization energies. (Ionization energies for Mg: 1st = 7.6 ev; 2nd = 14 ...
... (d) For magnesium, the difference between the second and third ionization energies is much larger than the difference between the first and second ionization energies. (Ionization energies for Mg: 1st = 7.6 ev; 2nd = 14 ...
primes - The Institute of Mathematical Sciences
... around us, and chemists have to find out how the different atoms fit around each other. For example, water does not look like H-H-O but it is like H-O-H, a big fat oxygen atom with two little hydrogen atoms on its sides. The name of another chemical compound benzene comes from its Arabic name luban ...
... around us, and chemists have to find out how the different atoms fit around each other. For example, water does not look like H-H-O but it is like H-O-H, a big fat oxygen atom with two little hydrogen atoms on its sides. The name of another chemical compound benzene comes from its Arabic name luban ...
Niels BOHR Bohr`s model was the first proposal that predicted the
... HALF-FILLED SUBSHELLS are more stable than other configurations. (can explain some transition metal chemistry) ...
... HALF-FILLED SUBSHELLS are more stable than other configurations. (can explain some transition metal chemistry) ...
Chapter # 4 notes
... Groups of elements have similar chemical properties SPECIAL GROUP NAMES: 1A (1) = alkali metals 2A (2) = alkaline earth metals 8A (18) = noble gases (six) 7A (17) = halogens (four) NOTE: H really belongs to its own group, which is why it’s shown by itself in my periodic table! It has 1 electron in o ...
... Groups of elements have similar chemical properties SPECIAL GROUP NAMES: 1A (1) = alkali metals 2A (2) = alkaline earth metals 8A (18) = noble gases (six) 7A (17) = halogens (four) NOTE: H really belongs to its own group, which is why it’s shown by itself in my periodic table! It has 1 electron in o ...
PPT Atoms and Periodicity
... more energy to remove each electron IE1 < IE2 < IE3, … look for a huge jump in IE once all valence e–’s are removed, the next e– is on an inner level with attraction (shielding & Zeff). huge jump in IE4 b/c 4th e– on inner level (must have 3 valence e–’s) ...
... more energy to remove each electron IE1 < IE2 < IE3, … look for a huge jump in IE once all valence e–’s are removed, the next e– is on an inner level with attraction (shielding & Zeff). huge jump in IE4 b/c 4th e– on inner level (must have 3 valence e–’s) ...
Date: ______ Class: ______ Name
... Use the chart above to answer the following questions: 26. As the atomic mass increases the atomic number increases. 27. Does the atomic mass or atomic number increase at a higher rate? the atomic mass increases at a higher rate than the atomic number 28. As the protons increase the neutrons increas ...
... Use the chart above to answer the following questions: 26. As the atomic mass increases the atomic number increases. 27. Does the atomic mass or atomic number increase at a higher rate? the atomic mass increases at a higher rate than the atomic number 28. As the protons increase the neutrons increas ...
Honors Chemistry Exam Review Questions
... A A scientific law fully explains a natural phenomenon. B The scientific method is a logical, systematic approach to the solution of a problem. C For the results of an experiment to be accepted, the experiment must produce the same results no matter how many times it is repeated. D The scientific pr ...
... A A scientific law fully explains a natural phenomenon. B The scientific method is a logical, systematic approach to the solution of a problem. C For the results of an experiment to be accepted, the experiment must produce the same results no matter how many times it is repeated. D The scientific pr ...
Atomic Number
... Discovery of the Electron • Because of Dalton’s atomic theory, most scientists in the 1800s believed that the atom was like a tiny solid ball that could not be broken up into parts. • In 1897, a British physicist, J.J. Thomson, discovered that this solid-ball model was not ...
... Discovery of the Electron • Because of Dalton’s atomic theory, most scientists in the 1800s believed that the atom was like a tiny solid ball that could not be broken up into parts. • In 1897, a British physicist, J.J. Thomson, discovered that this solid-ball model was not ...
AP Notes Chapter 2
... atomic mass of an isotope Atomic mass or atomic weight is the average mass of the isotopes of atoms Isotopic percent abundance or fractional abundance is a description of the proportion of an isotope in a sample of an element ...
... atomic mass of an isotope Atomic mass or atomic weight is the average mass of the isotopes of atoms Isotopic percent abundance or fractional abundance is a description of the proportion of an isotope in a sample of an element ...
Help us improve Wikipedia by supporting it financially
... The naming of elements precedes the atomic theory of matter, although at the time it was not known which chemicals were elements and which compounds. When it was learned, existing names (e.g., gold, mercury, iron) were kept in most countries, and national differences emerged over the names of elemen ...
... The naming of elements precedes the atomic theory of matter, although at the time it was not known which chemicals were elements and which compounds. When it was learned, existing names (e.g., gold, mercury, iron) were kept in most countries, and national differences emerged over the names of elemen ...
Structure of the Atom
... ** We use the atomic mass (rounded to nearest whole #) as the mass number We use this to figure out the number of neutrons in an atom. ...
... ** We use the atomic mass (rounded to nearest whole #) as the mass number We use this to figure out the number of neutrons in an atom. ...
Chapter 4 Section 4.3
... • So instead, we compare the relative masses of atoms using a reference isotope as a standard. • The reference isotope chosen is carbon-12. • The isotope of carbon has been assigned a mass of exactly 12 atomic mass units. ...
... • So instead, we compare the relative masses of atoms using a reference isotope as a standard. • The reference isotope chosen is carbon-12. • The isotope of carbon has been assigned a mass of exactly 12 atomic mass units. ...