Chapter 5
... •Center of atom was called nucleus. •Nucleus made up most of the weight of the atom. •Electrons were negative particles that randomly orbited the nucleus. ...
... •Center of atom was called nucleus. •Nucleus made up most of the weight of the atom. •Electrons were negative particles that randomly orbited the nucleus. ...
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 ...
... 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 ...
CHEM 101 Dual Enrollment HW4 Question 1 of 12 Dalton`s
... updated or changed due to new discoveries. Which of the following statements were parts of Dalton's original atomic theory? Select all that apply. Atoms of the same element have the same size, mass, and structure. Different elements have atoms of different masses and properties. Matter is comprised ...
... updated or changed due to new discoveries. Which of the following statements were parts of Dalton's original atomic theory? Select all that apply. Atoms of the same element have the same size, mass, and structure. Different elements have atoms of different masses and properties. Matter is comprised ...
Week 1 Grade 7 Thursday
... Atomic number = number of protons Atomic number = number of electrons in a neutral atom (not an ion) Atomic weight - atomic number = number of neutrons Isotopes have different numbers of neutrons, H normally has 0 neutrons ...
... Atomic number = number of protons Atomic number = number of electrons in a neutral atom (not an ion) Atomic weight - atomic number = number of neutrons Isotopes have different numbers of neutrons, H normally has 0 neutrons ...
Chapter 18
... • Dimitri Mendeleevarranged all the elements known in order of increasing atomic masses and discovered a pattern • Today’s Periodic Table— elements are arranged by increasing atomic number and by changes in physical and chemical properties ...
... • Dimitri Mendeleevarranged all the elements known in order of increasing atomic masses and discovered a pattern • Today’s Periodic Table— elements are arranged by increasing atomic number and by changes in physical and chemical properties ...
Atoms - Science with Mrs. Schulte
... Atomic mass The average mass of all the isotopes (different types) of an element ...
... Atomic mass The average mass of all the isotopes (different types) of an element ...
Chapter 2
... understanding of atomic structure. 5. Distinguish between each of the following pairs of terms: a. neutron and proton b. atomic number and mass number c. atomic weight and mass number 6. Explain how the atomic number and mass number of an atom can be used to determine the number of neutrons. 7. Expl ...
... understanding of atomic structure. 5. Distinguish between each of the following pairs of terms: a. neutron and proton b. atomic number and mass number c. atomic weight and mass number 6. Explain how the atomic number and mass number of an atom can be used to determine the number of neutrons. 7. Expl ...
The Atom - Mrs. Ellis` Science Class!
... ____________ the ________________ in specific and ______________ paths o However, an electron’s _____________ location _________________ be determined o Electrons exist in energy levels called ________________________ o The number of ____________ orbitals depends on how many _________________ an ato ...
... ____________ the ________________ in specific and ______________ paths o However, an electron’s _____________ location _________________ be determined o Electrons exist in energy levels called ________________________ o The number of ____________ orbitals depends on how many _________________ an ato ...
Atom The smallest piece of matter that still has the properties of the
... Located at the center of the atom. Consists of protons and neutrons. Electrons surround the nucleus. Electron found in outermost shell of an atom; determines atoms chemical properties The number of protons in an atom. This number identifies the element ...
... Located at the center of the atom. Consists of protons and neutrons. Electrons surround the nucleus. Electron found in outermost shell of an atom; determines atoms chemical properties The number of protons in an atom. This number identifies the element ...
Atomic Structure
... ISOTOPES Two atoms with the same # of protons (atomic #) but different #’s of neutrons (atomic masses) are ISOTOPES of the same element ...
... ISOTOPES Two atoms with the same # of protons (atomic #) but different #’s of neutrons (atomic masses) are ISOTOPES of the same element ...
Atomic Theory Outline
... iii. Lower level shells are closer to the nucleus and have less energy. iv. Electrons must fill in closer, low energy shells before the further, high energy shells can be filled. v. The goal of all atoms is to have a full valence shell. Atoms will borrow, give, or steal electrons to do this. vi. The ...
... iii. Lower level shells are closer to the nucleus and have less energy. iv. Electrons must fill in closer, low energy shells before the further, high energy shells can be filled. v. The goal of all atoms is to have a full valence shell. Atoms will borrow, give, or steal electrons to do this. vi. The ...
ch2_objectives
... 9. Define the terms energy and potential energy. Explain why electrons in the first electron shell have less potential energy than electrons in higher electron shells. 10. Distinguish among nonpolar covalent, polar covalent and ionic bonds. 11. Explain why strong covalent bonds and weak bonds are b ...
... 9. Define the terms energy and potential energy. Explain why electrons in the first electron shell have less potential energy than electrons in higher electron shells. 10. Distinguish among nonpolar covalent, polar covalent and ionic bonds. 11. Explain why strong covalent bonds and weak bonds are b ...
Lecture 2
... •Atoms are indestructible and retain their identity in all chemical reactions. •All of the atoms of a given chemical element are identical in mass and in all other properties. •Different elements have different kinds of atoms; these atoms differ in mass from element to element. •Compounds consist of ...
... •Atoms are indestructible and retain their identity in all chemical reactions. •All of the atoms of a given chemical element are identical in mass and in all other properties. •Different elements have different kinds of atoms; these atoms differ in mass from element to element. •Compounds consist of ...
RAD 354 Chapt 3 Structure of Matter
... • Mendeleev first suggested the periodic table with 8 groupings – Atomic number (Z#)= NUMBER OF PROTONS – Atomic MASS # = elemental mass (A) AND neutrons ...
... • Mendeleev first suggested the periodic table with 8 groupings – Atomic number (Z#)= NUMBER OF PROTONS – Atomic MASS # = elemental mass (A) AND neutrons ...
File
... 1. _____________________ are mostly gases, not very dense, and are good insulators because they do NOT allow heat or electricity to travel through them. 2. The noble gas family is the most ___________________ group because they have 8 valence electrons and do not easily react with other elements. 3. ...
... 1. _____________________ are mostly gases, not very dense, and are good insulators because they do NOT allow heat or electricity to travel through them. 2. The noble gas family is the most ___________________ group because they have 8 valence electrons and do not easily react with other elements. 3. ...
Chapter 7 Review Sheet
... creature approaches you. He explains that he is a scientist from planet Rainhard in a far corner of the universe. Only 12 elements are known to exist on Rainhard. He has been trying unsuccessfully to organize a periodic table for these elements, and in desperation has come to the far-off planet Eart ...
... creature approaches you. He explains that he is a scientist from planet Rainhard in a far corner of the universe. Only 12 elements are known to exist on Rainhard. He has been trying unsuccessfully to organize a periodic table for these elements, and in desperation has come to the far-off planet Eart ...
General CHemistry Unit 2 Homework Notes
... Solids have a fixed shape. In a solid the particles are closely packed together. Each particle in a solid is held in one position and vibrates around that position. The particles in a liquid stay relatively close together, but they can move around each other. Gas particles are far apart; they move r ...
... Solids have a fixed shape. In a solid the particles are closely packed together. Each particle in a solid is held in one position and vibrates around that position. The particles in a liquid stay relatively close together, but they can move around each other. Gas particles are far apart; they move r ...
Atomic Notation
... Atomic Notation Feb.21, 2012 -Chemical symbols were proposed in 1817 and were adopted internationally -The atom was recognized as being the smallest part of an element at that time -Atoms are composed of protons (positively charged), electrons (negatively charged), and neutrons (no charge) -Protons ...
... Atomic Notation Feb.21, 2012 -Chemical symbols were proposed in 1817 and were adopted internationally -The atom was recognized as being the smallest part of an element at that time -Atoms are composed of protons (positively charged), electrons (negatively charged), and neutrons (no charge) -Protons ...
Early Models of Atom
... 1. Each element is composed of indivisible particles called atoms 2. In an element, all of the atoms are identical. Atoms of different elements have different properties, such as mass. 3. In chemical reactions atoms are neither created nor destroyed. 4. In compounds atoms of more then one element co ...
... 1. Each element is composed of indivisible particles called atoms 2. In an element, all of the atoms are identical. Atoms of different elements have different properties, such as mass. 3. In chemical reactions atoms are neither created nor destroyed. 4. In compounds atoms of more then one element co ...
Chem vocab quiz definitons
... Valence electrons are the electrons in the outer shell and control the elements reactivity. Molecule is the smallest particle of a compound that has all the properties of the compound. Compound is a pure substance that is made of two or more elements chemically bound together. Pure substances are bo ...
... Valence electrons are the electrons in the outer shell and control the elements reactivity. Molecule is the smallest particle of a compound that has all the properties of the compound. Compound is a pure substance that is made of two or more elements chemically bound together. Pure substances are bo ...
2015 Final Exam Study Guide
... Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element? ...
... Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element? ...
Chapter 4 Study Guide
... Know definitions for the following vocabulary words: matter spectral line atom energy level nucleus electron cloud proton electromagnetic spectrum neutron charge electron Thomson’s atomic model proportion Rutherford’s atomic model Democritus Bohr’s atomic model Dalton element Lavoisier atomic number ...
... Know definitions for the following vocabulary words: matter spectral line atom energy level nucleus electron cloud proton electromagnetic spectrum neutron charge electron Thomson’s atomic model proportion Rutherford’s atomic model Democritus Bohr’s atomic model Dalton element Lavoisier atomic number ...
Ch 3 studentElements Ions Isotopes
... 2. all atoms of a particular element are identical 3. different elements have different atoms 4. atoms combine in certain whole-number ratios 5. In a chemical reaction, atoms are merely rearranged to form new compounds; they are not created, destroyed, or changed into atoms of any other elements ...
... 2. all atoms of a particular element are identical 3. different elements have different atoms 4. atoms combine in certain whole-number ratios 5. In a chemical reaction, atoms are merely rearranged to form new compounds; they are not created, destroyed, or changed into atoms of any other elements ...