9 19 -1 atomic number mass number charge
... protons. We often use a 1 or 2 letter abbreviation for an element, called the atomic symbol. This is usually fairly self explanatory (C for carbon, H for hydrogen), though in some cases the abbreviation comes from the Latin, Greek or German name for that element. For instance, silver is Ag, which is ...
... protons. We often use a 1 or 2 letter abbreviation for an element, called the atomic symbol. This is usually fairly self explanatory (C for carbon, H for hydrogen), though in some cases the abbreviation comes from the Latin, Greek or German name for that element. For instance, silver is Ag, which is ...
Unit 3 - Princeton High School
... 1. Do the numbers of electrons for neutral isotopes of the same elements differ? ________ 2. Do the number of protons for such isotopes differ? __________ 3. Do the number of neutrons for such isotopes differ? __________ 4. Do the atomic numbers for such isotopes differ? Explain. ...
... 1. Do the numbers of electrons for neutral isotopes of the same elements differ? ________ 2. Do the number of protons for such isotopes differ? __________ 3. Do the number of neutrons for such isotopes differ? __________ 4. Do the atomic numbers for such isotopes differ? Explain. ...
Chemistry Scavenger Hunt
... 2. There are three main phases of matter: _____________, ____________, and _____________. There is also a fourth phase, ______________, but it exists at very high temperatures. Science Is Fun Go to the “ChemTime Clock” and answer the questions below. http://www.scifun.org/ChemTime/ChemTime.html 1. A ...
... 2. There are three main phases of matter: _____________, ____________, and _____________. There is also a fourth phase, ______________, but it exists at very high temperatures. Science Is Fun Go to the “ChemTime Clock” and answer the questions below. http://www.scifun.org/ChemTime/ChemTime.html 1. A ...
Basic Atomic Structure and Chemical Bonding Goals: Understand
... different than the number of protons. To find the number of electrons, you must consider the charge. If an atom is positively charged, the number of electrons will be less than the number of protons. If it is negatively charged, the number of electrons will be greater. ...
... different than the number of protons. To find the number of electrons, you must consider the charge. If an atom is positively charged, the number of electrons will be less than the number of protons. If it is negatively charged, the number of electrons will be greater. ...
atom
... • Atoms of different elements combine in simple wholenumber ratios to form chemical compounds. ...
... • Atoms of different elements combine in simple wholenumber ratios to form chemical compounds. ...
GEO143_activity_2
... Number of Protons = Atomic Number (Use the large colored marshmallows for protons) Number of Neutrons = Atomic Mass – Atomic Number (Use the large white marshmallows for neutrons) Number of Electrons = Number of Protons (Use the small colored marshmallows for electrons) ...
... Number of Protons = Atomic Number (Use the large colored marshmallows for protons) Number of Neutrons = Atomic Mass – Atomic Number (Use the large white marshmallows for neutrons) Number of Electrons = Number of Protons (Use the small colored marshmallows for electrons) ...
Honors Chemistry Exam Review Questions
... D adding the mass number to the number of protons 27. An atom of an element with atomic number 48 and mass number 120 contains: A B C D ...
... D adding the mass number to the number of protons 27. An atom of an element with atomic number 48 and mass number 120 contains: A B C D ...
Name: Period: _____ Date
... 8. _____ average mass of all the isotopes of an element 9. _____ any charged particle, an atom that has gained or lost electrons 10. _____ s, p, d, f…sublevels of the electron cloud 11. _____ any element that tends to take electrons and get a negative charge 12. _____ part of an atom with a negative ...
... 8. _____ average mass of all the isotopes of an element 9. _____ any charged particle, an atom that has gained or lost electrons 10. _____ s, p, d, f…sublevels of the electron cloud 11. _____ any element that tends to take electrons and get a negative charge 12. _____ part of an atom with a negative ...
Groups of the Periodic Table
... The atoms of each element are represented by a chemical symbol. This usually consists of one or two different letters, but sometimes three letters are used for newly discovered elements. For example, O represents an oxygen atom, and Na represents a sodium atom. The first letter in a chemical symbol ...
... The atoms of each element are represented by a chemical symbol. This usually consists of one or two different letters, but sometimes three letters are used for newly discovered elements. For example, O represents an oxygen atom, and Na represents a sodium atom. The first letter in a chemical symbol ...
unit 4 * organization of matter
... chemical symbols. A chemical formula is used to represent the molecules and indicate the elements that are ...
... chemical symbols. A chemical formula is used to represent the molecules and indicate the elements that are ...
NANO-MODULE: Introduction to Chemistry Name: Date: Objectives
... Metals tend to lose electrons to nonmetals forming a positively charged atom (cation) and nonmetals tend to gain electrons from metals forming a negatively charged atom (anion). The purpose of this transfer of electrons is to attain a stable octet. Also, opposites attract, so the cation and anion ex ...
... Metals tend to lose electrons to nonmetals forming a positively charged atom (cation) and nonmetals tend to gain electrons from metals forming a negatively charged atom (anion). The purpose of this transfer of electrons is to attain a stable octet. Also, opposites attract, so the cation and anion ex ...
Atomic Structure – Revision Pack (C4) Atoms: A nucleus is made up
... Arrangement of electrons: The elements of the periodic table are arranged in order of increasing atomic number. The amount of electrons is different for the shells of an atom: The maximum number of electrons for the first shell is 2. The maximum number of electrons for all of the shells from then is ...
... Arrangement of electrons: The elements of the periodic table are arranged in order of increasing atomic number. The amount of electrons is different for the shells of an atom: The maximum number of electrons for the first shell is 2. The maximum number of electrons for all of the shells from then is ...
Observations Leading to the Nuclear Model of the Atom
... back nearly right back at the source. Conclusion: Atoms have a dense, positively charged core called the nucleus. By 1932, Chadwick discovered the neutron (neutral, not electrically charged). ...
... back nearly right back at the source. Conclusion: Atoms have a dense, positively charged core called the nucleus. By 1932, Chadwick discovered the neutron (neutral, not electrically charged). ...
C4 Atomic structure
... Arrangement of electrons: The elements of the periodic table are arranged in order of increasing atomic number. The amount of electrons is different for the shells of an atom: The maximum number of electrons for the first shell is 2. The maximum number of electrons for all of the shells from then is ...
... Arrangement of electrons: The elements of the periodic table are arranged in order of increasing atomic number. The amount of electrons is different for the shells of an atom: The maximum number of electrons for the first shell is 2. The maximum number of electrons for all of the shells from then is ...
Chapter 3 Powerpoint
... 1. All matter is made of indivisible and indestructible atoms. 2. All atoms of the same element are identical in their physical and chemical properties. ...
... 1. All matter is made of indivisible and indestructible atoms. 2. All atoms of the same element are identical in their physical and chemical properties. ...
An Introduction to Matter
... – An element is a pure substance which cannot be broken down into anything simpler by either physical or chemical means. ...
... – An element is a pure substance which cannot be broken down into anything simpler by either physical or chemical means. ...
PS_Module 4 - Leon County Schools
... for physical changes. An ice cube has the same mass as the water produced when it melts. • In other cases, conservation of mass is less obvious. If we think about it, we can usually explain cases in which the law of conservation of mass seems to have been violated. ...
... for physical changes. An ice cube has the same mass as the water produced when it melts. • In other cases, conservation of mass is less obvious. If we think about it, we can usually explain cases in which the law of conservation of mass seems to have been violated. ...
Lecture 2 - The Chemistry of Life
... • Isotopes are two atoms of an element that differ in number of neutrons • Radioactive isotopes decay spontaneously, giving off particles and energy ...
... • Isotopes are two atoms of an element that differ in number of neutrons • Radioactive isotopes decay spontaneously, giving off particles and energy ...
Chapter 2
... Mostly found on the left side of the table Usually solids Some are shiny (middle ones) Some are very reactive (one on far left) ...
... Mostly found on the left side of the table Usually solids Some are shiny (middle ones) Some are very reactive (one on far left) ...
Atomic Theory
... Valence electrons & electron dot diagrams • Review: The valence electrons are the outermost electrons in an atom. These are the electrons that are involved when there is a chemical reaction. • Looking at a periodic table, you can quickly determine how many valence electrons an atom has by what colu ...
... Valence electrons & electron dot diagrams • Review: The valence electrons are the outermost electrons in an atom. These are the electrons that are involved when there is a chemical reaction. • Looking at a periodic table, you can quickly determine how many valence electrons an atom has by what colu ...
Name________________________________________
... • Located outside of the nucleus in __________or levels called atomic clouds. • Their mass is so small that it is usually considered ___________. • It takes more than 1,800 electrons to equal the mass of one proton. • However electrons occupy most of an atoms ______________. Some things to remember: ...
... • Located outside of the nucleus in __________or levels called atomic clouds. • Their mass is so small that it is usually considered ___________. • It takes more than 1,800 electrons to equal the mass of one proton. • However electrons occupy most of an atoms ______________. Some things to remember: ...
Atomic Structure and the Periodic Table
... The atoms of each element are represented by a chemical symbol. This usually consists of one or two different letters, but sometimes three letters are used for newly discovered elements. For example, O represents an oxygen atom, and Na represents a sodium atom. The first letter in a chemical symbol ...
... The atoms of each element are represented by a chemical symbol. This usually consists of one or two different letters, but sometimes three letters are used for newly discovered elements. For example, O represents an oxygen atom, and Na represents a sodium atom. The first letter in a chemical symbol ...
2.1 Elements
... A. Relating Valence Electrons to Group Number • Elements in the same group have similar electron configurations. • Elements in the same group have the same number of valence electrons. ...
... A. Relating Valence Electrons to Group Number • Elements in the same group have similar electron configurations. • Elements in the same group have the same number of valence electrons. ...