CHEM 115 EXAM #1
... Use your periodic table to answer the following (use chemical symbols not names) a. the element expected to be chemically most similar to oxygen b. an element that exhibits properties between metals and nonmetals c. an element that is a transition metal d. a halogen e. an alkaline earth metal ...
... Use your periodic table to answer the following (use chemical symbols not names) a. the element expected to be chemically most similar to oxygen b. an element that exhibits properties between metals and nonmetals c. an element that is a transition metal d. a halogen e. an alkaline earth metal ...
Atoms and the Periodic Table
... • The symbol is an abbreviation for the name of each element. It’s either 1 or 2 letters with the 1st letter capitalized. • The atomic number is the smaller of the 2 numbers. This number tells us the number of protons and electrons in the atom. ...
... • The symbol is an abbreviation for the name of each element. It’s either 1 or 2 letters with the 1st letter capitalized. • The atomic number is the smaller of the 2 numbers. This number tells us the number of protons and electrons in the atom. ...
Atomic Structure
... When scientists design models of atoms, they usually show a simplified version of the atom's nucleus and its subatomic particles. The nucleus is made up of protons and neutrons (picture red and blue gumballs stuck together) with electrons moving at high speeds around the outside of the nucleus (imag ...
... When scientists design models of atoms, they usually show a simplified version of the atom's nucleus and its subatomic particles. The nucleus is made up of protons and neutrons (picture red and blue gumballs stuck together) with electrons moving at high speeds around the outside of the nucleus (imag ...
Atomic structure and periodic table notes sheet
... Atomic Structure and Periodic Table Notes 1. What are Atoms? ___________________________________________ ___________________________________________ 2. 400 BC- _________________ was the first scientist to suggest that all matter is composed of tiny, indivisible particles called atoms. (Atomos) 3. El ...
... Atomic Structure and Periodic Table Notes 1. What are Atoms? ___________________________________________ ___________________________________________ 2. 400 BC- _________________ was the first scientist to suggest that all matter is composed of tiny, indivisible particles called atoms. (Atomos) 3. El ...
Grade 9 Science
... experiment) • The development of cyclotrons and proton accelerators have further developed the model accepted today. ...
... experiment) • The development of cyclotrons and proton accelerators have further developed the model accepted today. ...
development of the atomic model
... Electrons in atoms can only occupy certain fixed orbits or “energy levels”. These energy positions are quantized, meaning only certain values are possible within an atom. To move from one energy orbit to another one, an electron must absorb or emit a quantum of energy exactly equal to the energy dif ...
... Electrons in atoms can only occupy certain fixed orbits or “energy levels”. These energy positions are quantized, meaning only certain values are possible within an atom. To move from one energy orbit to another one, an electron must absorb or emit a quantum of energy exactly equal to the energy dif ...
NANO-MODULE: Introduction to Chemistry Name: Date: Objectives
... Name: _________________________ ...
... Name: _________________________ ...
Unit 2 Atomic Structure Study Guide
... What is an anion? Which particles does it have more of: electrons or protons? 17.What is a cation? Which particles does it have more of: electrons or protons? Average Atomic Mass 1. How do you calculate the average atomic mass of an element? 2. Example: The Carbon atom has three isotopes: Carbon12 a ...
... What is an anion? Which particles does it have more of: electrons or protons? 17.What is a cation? Which particles does it have more of: electrons or protons? Average Atomic Mass 1. How do you calculate the average atomic mass of an element? 2. Example: The Carbon atom has three isotopes: Carbon12 a ...
The evolution of Atomic Theory
... 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 ...
Chemistry DCA Review Sheet
... Chemistry DCA Review Sheet Atoms 1. What are subatomic particles, what are their charges, and where are they found? ...
... Chemistry DCA Review Sheet Atoms 1. What are subatomic particles, what are their charges, and where are they found? ...
Atomic terms Example: Helium has an atomic number of 2. Every
... 35.45 amu (Natural chlorine is mostly chlorine-35) ...
... 35.45 amu (Natural chlorine is mostly chlorine-35) ...
Development of atomic theory Democritus (460BC
... charged electrode when a high voltage is applied). Thomson named this particles electrons. With this discovery scientists realized that atoms are not indivisible. Moreover, at that time scientists already knew that atoms are electrically neutral. Based on these two data Thomson proposed a model for ...
... charged electrode when a high voltage is applied). Thomson named this particles electrons. With this discovery scientists realized that atoms are not indivisible. Moreover, at that time scientists already knew that atoms are electrically neutral. Based on these two data Thomson proposed a model for ...
Chapter Review - BAschools.org
... 13. The modern periodic table is organized by a. size of atom b. atomic mass c. number of neutrons d. atomic number 14. Elements in a group have a. a wide range of chemical properties b. the same atomic radius c. similar chemical properties d. the same number of protons 15. Elements in a period have ...
... 13. The modern periodic table is organized by a. size of atom b. atomic mass c. number of neutrons d. atomic number 14. Elements in a group have a. a wide range of chemical properties b. the same atomic radius c. similar chemical properties d. the same number of protons 15. Elements in a period have ...
Chapter 4: Chemical Reactions Elements can be characterized as
... (c) HNO3; (d) NO3-; (e) N2 Naming inorganic compounds Binary compounds (name the more metallic first, the less metallic second). The less metallic is named by adding –ide to the stem. (pg. 140) Binary ionic (metal cations, nonmetal anions) – cation named first, the anion second (KBrpotassium bromide ...
... (c) HNO3; (d) NO3-; (e) N2 Naming inorganic compounds Binary compounds (name the more metallic first, the less metallic second). The less metallic is named by adding –ide to the stem. (pg. 140) Binary ionic (metal cations, nonmetal anions) – cation named first, the anion second (KBrpotassium bromide ...
PowerPoint Overview for Introduction
... But do you recall munching some Molybdenum or snaking on Selenium? Some 60 chemical elements are found in the body, but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: Oxygen, Carbon, Hydrogen and Nitrogen, with a ...
... But do you recall munching some Molybdenum or snaking on Selenium? Some 60 chemical elements are found in the body, but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: Oxygen, Carbon, Hydrogen and Nitrogen, with a ...
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 ...
Atomic Theories Timeline
... • There are various basic elements from which all matter is made • Everything is composed of small atoms moving in a void • Some atoms are round, pointy, oily, have hooks, etc. to account for their properties • Ideas rejected by leading philosophers because void = no existence ...
... • There are various basic elements from which all matter is made • Everything is composed of small atoms moving in a void • Some atoms are round, pointy, oily, have hooks, etc. to account for their properties • Ideas rejected by leading philosophers because void = no existence ...
File - Cynthia Campbell
... lowest-level energy state and can hold no more than two electrons. The second shell, with two subshells that contain four levels of energy states, can hold no more than eight electrons. The subshells containing the lowest energy states fill first, and if a subshell is full, additional electrons are ...
... lowest-level energy state and can hold no more than two electrons. The second shell, with two subshells that contain four levels of energy states, can hold no more than eight electrons. The subshells containing the lowest energy states fill first, and if a subshell is full, additional electrons are ...
Modern Physics - WordPress.com
... Bohr put the electrons into energy shells around the nucleus Chadwick discovered the neutron in the nucleus The model of the atom took 2000 years to design and we have had it about 70 years! ...
... Bohr put the electrons into energy shells around the nucleus Chadwick discovered the neutron in the nucleus The model of the atom took 2000 years to design and we have had it about 70 years! ...
Name - Madison County Schools
... A. Who first arranged the periodic table by atomic mass? Dmitri Mendeleev B. What characteristics did Mendeleev use to place the elements in order when creating the periodic table? Rows - Increasing mass Columns – Similar properties C. What are valence electrons? Electrons in the highest occupied en ...
... A. Who first arranged the periodic table by atomic mass? Dmitri Mendeleev B. What characteristics did Mendeleev use to place the elements in order when creating the periodic table? Rows - Increasing mass Columns – Similar properties C. What are valence electrons? Electrons in the highest occupied en ...
Slide 1
... 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 ...
2_AtomicStructure
... 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 ...