Canyon High School Chemistry
... 33. By which common decay mode does an atom lose the greatest mass? The least? V. Nuclear Stability, Half-Life, Reactions and Health Considerations 34. What force holds protons together in the nucleus? 35. Define Half-Life. How is it useful? 36. A piece of wood found in an ancient burial chamber con ...
... 33. By which common decay mode does an atom lose the greatest mass? The least? V. Nuclear Stability, Half-Life, Reactions and Health Considerations 34. What force holds protons together in the nucleus? 35. Define Half-Life. How is it useful? 36. A piece of wood found in an ancient burial chamber con ...
Properties of Atoms and the Periodic Table
... 10. In the periodic table, elements are arranged by increasing atomic (power/number). 11. An electron dot diagram uses the symbol of an element and dots to represent the (quarks/electrons) in the outer energy level. ...
... 10. In the periodic table, elements are arranged by increasing atomic (power/number). 11. An electron dot diagram uses the symbol of an element and dots to represent the (quarks/electrons) in the outer energy level. ...
Define:
... 86. Chlorine has two naturally occurring isotopes, Cl-35 and Cl-37. The atomic mass of chlorine is 35.45. Which of these two isotopes of chlorine is more abundant? 87. Consider an element Z that has two naturally occurring isotopes with the following percent abundances: the isotope with a mass numbe ...
... 86. Chlorine has two naturally occurring isotopes, Cl-35 and Cl-37. The atomic mass of chlorine is 35.45. Which of these two isotopes of chlorine is more abundant? 87. Consider an element Z that has two naturally occurring isotopes with the following percent abundances: the isotope with a mass numbe ...
lecture_CH1-2review_chem121pikul
... Distinguish the difference between chemical and physical properties & changes We represent uncertainty with significant figures You do not need to memorize Sig Fig rules Scientific Notation Conversions within the metric system and non metric units Temperature conversions Density & Spec ...
... Distinguish the difference between chemical and physical properties & changes We represent uncertainty with significant figures You do not need to memorize Sig Fig rules Scientific Notation Conversions within the metric system and non metric units Temperature conversions Density & Spec ...
Created by Campesi, SMS
... Electrons-negative chargein the electron cloud-almost no mass. Atom is neutral-equal number of protons and electrons so they cancel each other out. ...
... Electrons-negative chargein the electron cloud-almost no mass. Atom is neutral-equal number of protons and electrons so they cancel each other out. ...
Atoms and Elements
... There's the atomic number (Z) and then there's the mass number (A) The atomic number (Z) of an element is the number of protons in the nucleus. The number of protons in the nucleus is what determines which element any given atom is. The mass number (A) is the number of protons + the number of neutr ...
... There's the atomic number (Z) and then there's the mass number (A) The atomic number (Z) of an element is the number of protons in the nucleus. The number of protons in the nucleus is what determines which element any given atom is. The mass number (A) is the number of protons + the number of neutr ...
Test #1 Study Guide
... distinguished from ionic compounds because of this. Naming of molecular ions requires you to know the prefixes that indicate the number of a certain thing. o For the first element, indicate the number that exist in the molecule with a prefix. o Do the same for the second molecule, but be sure to use ...
... distinguished from ionic compounds because of this. Naming of molecular ions requires you to know the prefixes that indicate the number of a certain thing. o For the first element, indicate the number that exist in the molecule with a prefix. o Do the same for the second molecule, but be sure to use ...
Lesson 12: Atoms By Numbers
... Wrap Up (cont.) • In a neutral atom, the number of electrons is equal to the number of protons. • The mass of a proton is 1 atomic mass unit (1 amu). The mass of a neutron is also 1 amu. The mass of an electron is so small it is considered negligible. So the mass of an atom in atomic mass units is ...
... Wrap Up (cont.) • In a neutral atom, the number of electrons is equal to the number of protons. • The mass of a proton is 1 atomic mass unit (1 amu). The mass of a neutron is also 1 amu. The mass of an electron is so small it is considered negligible. So the mass of an atom in atomic mass units is ...
document
... 2. Ion C B. A bond that is formed by sharing electrons. 3. Charge D C. A charged atom. D. The number of electrons an 4. Covalent Bond B element is willing to gain, lose, or share to form compounds. 5. Ionic Bond I E. States that all elements want either a full outer shell or eight 6. Subscript H ele ...
... 2. Ion C B. A bond that is formed by sharing electrons. 3. Charge D C. A charged atom. D. The number of electrons an 4. Covalent Bond B element is willing to gain, lose, or share to form compounds. 5. Ionic Bond I E. States that all elements want either a full outer shell or eight 6. Subscript H ele ...
Atoms, Elements, and Ions
... What: Solid Sphere Model (1st atomic theory) •Elements are made up of indivisible particles called atoms •Each element was composed of the same kind of atoms. •Different elements were composed of different kinds of atoms. •Compounds are composed of atoms in specific ratios. •Atoms are not created or ...
... What: Solid Sphere Model (1st atomic theory) •Elements are made up of indivisible particles called atoms •Each element was composed of the same kind of atoms. •Different elements were composed of different kinds of atoms. •Compounds are composed of atoms in specific ratios. •Atoms are not created or ...
Slide 1
... Atoms of the same element are identical Can combine to form compounds Chemical reactions occur when atoms are separated, joined, or rearranged, but atoms of one element are not changed into atoms of another by a chemical reaction ...
... Atoms of the same element are identical Can combine to form compounds Chemical reactions occur when atoms are separated, joined, or rearranged, but atoms of one element are not changed into atoms of another by a chemical reaction ...
Atom, Ion, Isotope Notes from 10/5 and 10/6
... a good estimation for finding the most common stable isotope of an atom. HOWEVER, it is not a perfect method. Look at Ag for example. It’s atomic mass is 107.87 amu, which would round to 108 amu. This is actually NOT a stable isotope of Ag (only 107 amu and 109 amu are). If you really wanted to know ...
... a good estimation for finding the most common stable isotope of an atom. HOWEVER, it is not a perfect method. Look at Ag for example. It’s atomic mass is 107.87 amu, which would round to 108 amu. This is actually NOT a stable isotope of Ag (only 107 amu and 109 amu are). If you really wanted to know ...
effective nuclear charge
... elements in order of increasing atomic weights - noted similar chemical and physical properties Left spaces in pt to keep elements properly lined up according to chemical properties = able to predict the properties and the mass #s of new elements that had not been discovered yet. ...
... elements in order of increasing atomic weights - noted similar chemical and physical properties Left spaces in pt to keep elements properly lined up according to chemical properties = able to predict the properties and the mass #s of new elements that had not been discovered yet. ...
Chapter 2
... The mass of an atom in atomic mass units (amu) is the total number of protons and neutrons in the atom Isotopes: • Atoms of the same element with different masses. • Isotopes have different numbers of neutrons. Isotopes of Hydrogen Atomic Mass Atomic and molecular masses can be measured with great a ...
... The mass of an atom in atomic mass units (amu) is the total number of protons and neutrons in the atom Isotopes: • Atoms of the same element with different masses. • Isotopes have different numbers of neutrons. Isotopes of Hydrogen Atomic Mass Atomic and molecular masses can be measured with great a ...
Bohr´s atomic model (1913)
... The mass number is not necessarily the same in all the atoms of an element, because the number of neutrons can change in an element. Atoms with the same Z (therefore of the same element) and with different A (therefore with different number of neutrons) are called isotopes. ...
... The mass number is not necessarily the same in all the atoms of an element, because the number of neutrons can change in an element. Atoms with the same Z (therefore of the same element) and with different A (therefore with different number of neutrons) are called isotopes. ...
Electron Configuration, Noble Gas Configuration
... 1. What types of changes can occur to atoms without altering the atom’s elemental identity? 2. How do the changes that occur to atoms effect the properties of those atoms? Overview: In this short unit we will see how the periodic table can be used to deepen our understanding of atom models. We will ...
... 1. What types of changes can occur to atoms without altering the atom’s elemental identity? 2. How do the changes that occur to atoms effect the properties of those atoms? Overview: In this short unit we will see how the periodic table can be used to deepen our understanding of atom models. We will ...
a worksheet on C1.1
... electrons in their highest energy level (outer electrons) and this gives them similar chemical properties. Knowledge is limited to the reactions of Group 1 elements with water and oxygen. Candidates are not required to know of trends within each group in the periodic table, but should be aware of si ...
... electrons in their highest energy level (outer electrons) and this gives them similar chemical properties. Knowledge is limited to the reactions of Group 1 elements with water and oxygen. Candidates are not required to know of trends within each group in the periodic table, but should be aware of si ...
Chem. Review Notes
... • have no charge (neutral or zero) • have a mass of 1 atomic mass unit (amu) • are inside the nucleus of the atom ...
... • have no charge (neutral or zero) • have a mass of 1 atomic mass unit (amu) • are inside the nucleus of the atom ...
Isotopes
... • Isotopes are atoms that have the same number of protons, but different numbers of neutrons. • They can be a radioactive form of an element. – Atoms of the same element all have the same number of protons. – Isotopes of the element have different numbers of neutrons. ...
... • Isotopes are atoms that have the same number of protons, but different numbers of neutrons. • They can be a radioactive form of an element. – Atoms of the same element all have the same number of protons. – Isotopes of the element have different numbers of neutrons. ...
Chapter 4 Review Worksheet. Name
... 3. Use the following information to determine the atomic mass of chlorine. Two isotopes are known: chlorine-35 (mass = 34.97 amu) and chlorine-37 (mass = 36.97 amu). The relative abundance’s are 75.4% and 24.6%, respectively. ...
... 3. Use the following information to determine the atomic mass of chlorine. Two isotopes are known: chlorine-35 (mass = 34.97 amu) and chlorine-37 (mass = 36.97 amu). The relative abundance’s are 75.4% and 24.6%, respectively. ...
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!) ...
Chemistry: The Basics
... one unit of negative charge. – Actual mass: 9.11 x 10-28 __________ grams ...
... one unit of negative charge. – Actual mass: 9.11 x 10-28 __________ grams ...
File
... Protons Determine the Element • The atomic number, Z, represents the number of protons, p+, in the nucleus of an atom. • The atomic number is usually the biggest number listed in the box for each element (look at periodic table). • The atomic number (or number of protons) identifies an element. • T ...
... Protons Determine the Element • The atomic number, Z, represents the number of protons, p+, in the nucleus of an atom. • The atomic number is usually the biggest number listed in the box for each element (look at periodic table). • The atomic number (or number of protons) identifies an element. • T ...
Nature of Matter
... • If we change the atomic number, we change the element we are talking about… ...
... • If we change the atomic number, we change the element we are talking about… ...
Chemistry
... • Sort by size, shape, or color • Remove portions with magnets • Fractional distillation • Evaporation • Decant • Chromatography • Filtration • precipitation ...
... • Sort by size, shape, or color • Remove portions with magnets • Fractional distillation • Evaporation • Decant • Chromatography • Filtration • precipitation ...