4-2 A Guided Tour of the Periodic Table
... An amu is equal to one-twelfth of the mass of a carbon-12 atom. This isotope of carbon has six protons and six neutrons, so individual protons and neutrons must each have a mass of about 1.0 amu, because electrons contribute very little mass. ...
... An amu is equal to one-twelfth of the mass of a carbon-12 atom. This isotope of carbon has six protons and six neutrons, so individual protons and neutrons must each have a mass of about 1.0 amu, because electrons contribute very little mass. ...
atom
... the specific amount of energy it has. Electrons of different energy levels are likely to be found in different places. ...
... the specific amount of energy it has. Electrons of different energy levels are likely to be found in different places. ...
Determining Periodic Trends
... electrons in their outer electron shells. Ionization energy: The amount of energy required to remove one electron from a neutral atom that is in the gaseous state. Elements on the right side really want to keep their electrons because they are so close to achieving an octet. Elements on the left sid ...
... electrons in their outer electron shells. Ionization energy: The amount of energy required to remove one electron from a neutral atom that is in the gaseous state. Elements on the right side really want to keep their electrons because they are so close to achieving an octet. Elements on the left sid ...
atomic structure what are atoms?
... proposed that atoms make up all substances Atom — “unable to be divided” ...
... proposed that atoms make up all substances Atom — “unable to be divided” ...
Trends in the Periodic Table
... • You will see large increases in ionization energies when a noble gas configuration is reached. • Example Li+ has the same electron configuration as He so you will see a large jump between the first and second ionization energies. ...
... • You will see large increases in ionization energies when a noble gas configuration is reached. • Example Li+ has the same electron configuration as He so you will see a large jump between the first and second ionization energies. ...
SCI 111
... Know what JJ Thompson and Robert Millikan are credited for discovering about the atom. Also know their basic methodology that lead tem to their revolutionary discoveries ...
... Know what JJ Thompson and Robert Millikan are credited for discovering about the atom. Also know their basic methodology that lead tem to their revolutionary discoveries ...
ATOMIC THEORY
... 2. Democritus and Aristotle, around 420 B.C. suggested that matter could be broken down into smaller and smaller components. 3. They coined the term “atoms”, which is Greek for “indivisible”. 4. Atoms were considered tiny particles that could not be seen. B. Quantitative Studies 1. Law of Conservati ...
... 2. Democritus and Aristotle, around 420 B.C. suggested that matter could be broken down into smaller and smaller components. 3. They coined the term “atoms”, which is Greek for “indivisible”. 4. Atoms were considered tiny particles that could not be seen. B. Quantitative Studies 1. Law of Conservati ...
PPT Slides
... Electrons move around the nucleus very quickly. Scientists have found that it is not possible to determine the exact position of any single electron in an atom because they are moving too fast. This is why we picture electrons as a cloud around the nucleus. ...
... Electrons move around the nucleus very quickly. Scientists have found that it is not possible to determine the exact position of any single electron in an atom because they are moving too fast. This is why we picture electrons as a cloud around the nucleus. ...
Chapter 2: Matter is Made up of Atoms
... • Proust (1799) discovered water was always 11% hydrogen, 89% oxygen – law of definite ...
... • Proust (1799) discovered water was always 11% hydrogen, 89% oxygen – law of definite ...
Electrons in Atoms - Miss Erica @ IAS Cancun
... Electron Dot Structures • Consists of the element’s symbol and inner-level electrons surrounded by dots representing the atom’s valence electrons • V.E. are placed one at a time on the four sides of the symbol and then paired up until all are used ...
... Electron Dot Structures • Consists of the element’s symbol and inner-level electrons surrounded by dots representing the atom’s valence electrons • V.E. are placed one at a time on the four sides of the symbol and then paired up until all are used ...
Chapter 4: Introduction to Earth Chemistry Section 1 Notes
... _________________ a subatomic particle that has a _________________ charge _________________ a subatomic particle that has _________________ charge and that is located in the nucleus of an atom The Nucleus The protons and neutrons of an atom form the _______________________. The __________ charged n ...
... _________________ a subatomic particle that has a _________________ charge _________________ a subatomic particle that has _________________ charge and that is located in the nucleus of an atom The Nucleus The protons and neutrons of an atom form the _______________________. The __________ charged n ...
CHAPTER 5
... Democritus – 4th century B.C. Greek philosopher who first proposed that matter is composed of indivisible, indestructible particles called ___________________. The first atomic model was not proposed until 2000 years later! In the 1700’s, John Dalton performed experiments that related chemical chang ...
... Democritus – 4th century B.C. Greek philosopher who first proposed that matter is composed of indivisible, indestructible particles called ___________________. The first atomic model was not proposed until 2000 years later! In the 1700’s, John Dalton performed experiments that related chemical chang ...
Physical Science EOCT Review Domain 1: Chemistry
... – After how many months would you be left with less than $1? – What is the half life for this ...
... – After how many months would you be left with less than $1? – What is the half life for this ...
PPT format
... (1) Classic exemplar of the scientific process: Mendeleev (2) Atomic mass and atomic number as atom identifiers (3) Periodic properties along rows and down columns Electronegativity (ability of an atom to hold electrons) Chemical reactivity (kinds of reactions atoms undergo) Valence (the number of b ...
... (1) Classic exemplar of the scientific process: Mendeleev (2) Atomic mass and atomic number as atom identifiers (3) Periodic properties along rows and down columns Electronegativity (ability of an atom to hold electrons) Chemical reactivity (kinds of reactions atoms undergo) Valence (the number of b ...
Click here to the handout.
... 2. Explain why hydrogen is a light gas but iron is a heavy solid. ...
... 2. Explain why hydrogen is a light gas but iron is a heavy solid. ...
CHAPTER 1 Practice Exercises 1.1 x = 12.3 g Cd 1.3 2.24845 ×12 u
... Silver and gold are in the same periodic table group as copper, so they might well be expected to occur together in nature, because of their similar properties and tendencies to form similar compounds. ...
... Silver and gold are in the same periodic table group as copper, so they might well be expected to occur together in nature, because of their similar properties and tendencies to form similar compounds. ...
3.08_Periodic Table and the Atom
... 22. Elements of Groups 17 are called ________________________________. 23. The most active element in Group 17 is ________________________________. 24. Elements of Groups 18 are called ________________________________. 25. What sublevels are filling across the Transition Metals? ________________ 26. ...
... 22. Elements of Groups 17 are called ________________________________. 23. The most active element in Group 17 is ________________________________. 24. Elements of Groups 18 are called ________________________________. 25. What sublevels are filling across the Transition Metals? ________________ 26. ...
Exam #2 Review
... Atomic Model History – MAKE SURE YOU CAN MATCH EACH SCIENTIST TO HIS MODEL!! 1. Draw and name each scientist’s model of the atom: a. Dalton Billiard Ball Model ...
... Atomic Model History – MAKE SURE YOU CAN MATCH EACH SCIENTIST TO HIS MODEL!! 1. Draw and name each scientist’s model of the atom: a. Dalton Billiard Ball Model ...
The History of Atoms Power Point
... Daltons Theory Early 1800’s Dalton’s Theory had 4 parts: 1) All elements were made of atoms 2) Atoms of the same elements were alike 3) Atoms of different elements were different 4) Elements can be combined to form different substances ...
... Daltons Theory Early 1800’s Dalton’s Theory had 4 parts: 1) All elements were made of atoms 2) Atoms of the same elements were alike 3) Atoms of different elements were different 4) Elements can be combined to form different substances ...
electrons - Northside Middle School
... shells. The innermost shell of every atom could hold 2 electrons (except hydrogen, which only has 1 electron). The second shell holds 8 electrons, the 3rd holds 18. Electrons fill in from the nucleus out, so the inner shells always fill up first. ...
... shells. The innermost shell of every atom could hold 2 electrons (except hydrogen, which only has 1 electron). The second shell holds 8 electrons, the 3rd holds 18. Electrons fill in from the nucleus out, so the inner shells always fill up first. ...
AtomsIntro His
... number. • Mass numbers are found by adding the protons and neutrons. • Atomic mass of an element is the average mass of all the isotopes of that element. ...
... number. • Mass numbers are found by adding the protons and neutrons. • Atomic mass of an element is the average mass of all the isotopes of that element. ...
ch 4 notes
... Alchemy (next 2000 years) • Mixture of science and mysticism. • Lab procedures were developed, but alchemists did not perform controlled experiments like true scientists. ...
... Alchemy (next 2000 years) • Mixture of science and mysticism. • Lab procedures were developed, but alchemists did not perform controlled experiments like true scientists. ...
Powerpoint Historical Model
... occurs when oxygen combines with other elements Discovered/proposed the Law of Conservation of Mass (or Matter) which states, in a chemical reaction, matter is neither created nor destroyed ...
... occurs when oxygen combines with other elements Discovered/proposed the Law of Conservation of Mass (or Matter) which states, in a chemical reaction, matter is neither created nor destroyed ...
Atomic Theory of Matter: matter is made up of fundamental particles
... A few particles were deflected. => ___________________________________________________________. Nucleus: small, dense core containing protons and neutrons. o Electrons surround the nucleus. ...
... A few particles were deflected. => ___________________________________________________________. Nucleus: small, dense core containing protons and neutrons. o Electrons surround the nucleus. ...