03Atomic_Structure 175KB Sep 13 2012 09:32:33 AM
... • The nucleus contains most of an atom's mass • It was discovered by Ernest Rutherford in ...
... • The nucleus contains most of an atom's mass • It was discovered by Ernest Rutherford in ...
Structure of the Atom
... • The atomic number is the number of protons in the atom • The atomic number tells us WHO the atom is. The atomic number (and therefore the protons) NEVER change! (if they did it would be a different element!) ...
... • The atomic number is the number of protons in the atom • The atomic number tells us WHO the atom is. The atomic number (and therefore the protons) NEVER change! (if they did it would be a different element!) ...
Unit 4 Test REVIEW
... 31. What is the mass number of an atom that has 20 protons, 22 neutrons and 20 electrons? 32. The word atom comes from the Greek word atomos meaning __________________. 33. In the synthesis of sulfur trifluoride, 33.0 g of sulfur combines with 24.0 g of fluorine. How many grams of sulfur trifluoride ...
... 31. What is the mass number of an atom that has 20 protons, 22 neutrons and 20 electrons? 32. The word atom comes from the Greek word atomos meaning __________________. 33. In the synthesis of sulfur trifluoride, 33.0 g of sulfur combines with 24.0 g of fluorine. How many grams of sulfur trifluoride ...
Notes - Organization of Matter
... • Compounds are pure substances that are composed of two or more atoms that are chemically combined • Compounds can only be changed into simpler substances called elements by chemical changes ...
... • Compounds are pure substances that are composed of two or more atoms that are chemically combined • Compounds can only be changed into simpler substances called elements by chemical changes ...
Document
... Rutherford received the 1908 Nobel Prize in Chemistry for his pioneering work in nuclear chemistry. ...
... Rutherford received the 1908 Nobel Prize in Chemistry for his pioneering work in nuclear chemistry. ...
The ATOM - Aarmstrongchem
... 1) All Matter is made up of very small particles called atoms 2) Atoms of the same element have the same chemical properties 3) While individual atoms of a given element may not all have the same mass any sample of the element will have a definite average mass that is characteristic. ...
... 1) All Matter is made up of very small particles called atoms 2) Atoms of the same element have the same chemical properties 3) While individual atoms of a given element may not all have the same mass any sample of the element will have a definite average mass that is characteristic. ...
Unit 1 Matter: Properties and Change
... They are malleable (they can be easily hammered into very thin sheets). ...
... They are malleable (they can be easily hammered into very thin sheets). ...
The Wave Model
... minus Atomic number • Valence electrons are the electrons on the outermost energy level. • Electron Capacity for each energy level – 1st energy level: 2 electrons – 2nd energy level: 8 electrons – 3rd energy level: 8 electrons ...
... minus Atomic number • Valence electrons are the electrons on the outermost energy level. • Electron Capacity for each energy level – 1st energy level: 2 electrons – 2nd energy level: 8 electrons – 3rd energy level: 8 electrons ...
Document
... Know the mass (a.m.u), location, and charge of each particle in the atom. Determine the mass number of an atom given the number of protons, electrons, and neutrons. Know the definition of an isotope and be able to recognize if an element is an isotope or a different element. Recognize the definition ...
... Know the mass (a.m.u), location, and charge of each particle in the atom. Determine the mass number of an atom given the number of protons, electrons, and neutrons. Know the definition of an isotope and be able to recognize if an element is an isotope or a different element. Recognize the definition ...
Dr. Harris Chemistry 105 Practice Exam 1 Isotope Atomic Number
... Why do atoms exhibit discontinuous (line) spectra when they emit light? Why can’t an atom emit any wavelength of light? Energy is quantized. Emission is due to specific transitions between ground and excited states. 18. Refer to the activity series in chapter 10. For the single replacement reactions ...
... Why do atoms exhibit discontinuous (line) spectra when they emit light? Why can’t an atom emit any wavelength of light? Energy is quantized. Emission is due to specific transitions between ground and excited states. 18. Refer to the activity series in chapter 10. For the single replacement reactions ...
PowerPoint_Atomic Structure
... suggested that all matter was made up of tiny spheres that were able to bounce around with perfect elasticity and called them ...
... suggested that all matter was made up of tiny spheres that were able to bounce around with perfect elasticity and called them ...
Teacher Background Information: The periodic table is arranged in
... The cations (Na+, Mg2+ and Al3+) contain fewer electrons than protons so the electrostatic attraction between the nucleus and the outermost electron is greater and the ion is smaller that the parent atom. It is also smaller because the number of electron shells has decreased by one. Across the perio ...
... The cations (Na+, Mg2+ and Al3+) contain fewer electrons than protons so the electrostatic attraction between the nucleus and the outermost electron is greater and the ion is smaller that the parent atom. It is also smaller because the number of electron shells has decreased by one. Across the perio ...
Atoms
... Atoms cannot be created, destroyed or divided in to smaller particle. Different atoms combine in simple whole number ratios to form compounds. Atoms are neither created nor destroyed in chemical reactions. ...
... Atoms cannot be created, destroyed or divided in to smaller particle. Different atoms combine in simple whole number ratios to form compounds. Atoms are neither created nor destroyed in chemical reactions. ...
Models of the Atom: A Historical perspective
... • Some positive -particles deflected or bounced back! • Thus, a “nucleus” is positive & holds most of an atom’s mass ...
... • Some positive -particles deflected or bounced back! • Thus, a “nucleus” is positive & holds most of an atom’s mass ...
Chapter 5
... arranged in order of increasing atomic mass, certain similarities in their properties appeared ...
... arranged in order of increasing atomic mass, certain similarities in their properties appeared ...
Document
... Valence Electrons • Valence electrons are the electrons in the highest occupied energy level of the atom. • Valence electrons are the only electrons generally involved in bond formation. • The valence electrons in the s and p orbitals are written around the element symbol. • These electrons are the ...
... Valence Electrons • Valence electrons are the electrons in the highest occupied energy level of the atom. • Valence electrons are the only electrons generally involved in bond formation. • The valence electrons in the s and p orbitals are written around the element symbol. • These electrons are the ...
Reading Assignment Worksheet on Atoms - District 196 e
... Directions: Complete the concept map using the terms in the list below. Terms can be used more than once. ...
... Directions: Complete the concept map using the terms in the list below. Terms can be used more than once. ...
CHAPTER 3 sec 1 - Leon County Schools
... Can you still see it? NO? Of course not, it’s been reduced to the size of an ...
... Can you still see it? NO? Of course not, it’s been reduced to the size of an ...
Chemical Bond – a force that holds two atoms together, the bond
... Metallic Bond – is the attraction of a metallic cation for delocalized electrons; electrons are not localized to one metallic atom. Delocalized Electrons – electrons that freely move from one metallic atom to another metallic atom. Covalent Bond – a chemical bond between two different atomic elemen ...
... Metallic Bond – is the attraction of a metallic cation for delocalized electrons; electrons are not localized to one metallic atom. Delocalized Electrons – electrons that freely move from one metallic atom to another metallic atom. Covalent Bond – a chemical bond between two different atomic elemen ...
SL Topic 2 : Atomic structure
... 12. In what order do the orbitals increase in energy within the same level? A. d < f < p < s B. f < d < p < s C. s < p < d < f D. s < d < p < f ...
... 12. In what order do the orbitals increase in energy within the same level? A. d < f < p < s B. f < d < p < s C. s < p < d < f D. s < d < p < f ...
Atomic Structure - Peoria Public Schools
... Ernest Rutherford: Existence of the nucleus, and its relative size Meitner & Fermi: Sustained nuclear fission Ernest Lawrence: The cyclotron and trans-uranium elements ...
... Ernest Rutherford: Existence of the nucleus, and its relative size Meitner & Fermi: Sustained nuclear fission Ernest Lawrence: The cyclotron and trans-uranium elements ...