Atoms - Mrs. Carlyle`s Classroom
... ◦ Neutron, neutral found in nucleus (mass number subtracted by number of protons indicates neutrons) ◦ Proton, positive found in nucleus (atomic number indicates number of protons in the atom) ◦ Electron, negative found surrounding the nucleus (equal number of protons and electrons) ...
... ◦ Neutron, neutral found in nucleus (mass number subtracted by number of protons indicates neutrons) ◦ Proton, positive found in nucleus (atomic number indicates number of protons in the atom) ◦ Electron, negative found surrounding the nucleus (equal number of protons and electrons) ...
Chapter 2 Law of Dalton`s Atomic Theory Law of Multiple
... • Mendeleev arranged the elements by increasing atomic mass. ...
... • Mendeleev arranged the elements by increasing atomic mass. ...
Six Weeks Review PPT
... Periods are rows, and tell how many energy levels the neutral atom has; elements increase left to right across the periods and are very different in properties/reactivity; Groups or families are columns; atoms in the same group have the same number of valence electrons, and similar chemical reacti ...
... Periods are rows, and tell how many energy levels the neutral atom has; elements increase left to right across the periods and are very different in properties/reactivity; Groups or families are columns; atoms in the same group have the same number of valence electrons, and similar chemical reacti ...
Chemistry Unit 1 Revision
... • The elements in Group 1 of the periodic table, known as the alkali metals. • Are metals with low density (the first three are less dense than water) • React with non-metals by losing 1 electron to form positive ions (+1 charge) • Reaction with water gives off hydrogen gas and a metal hydroxide (OH ...
... • The elements in Group 1 of the periodic table, known as the alkali metals. • Are metals with low density (the first three are less dense than water) • React with non-metals by losing 1 electron to form positive ions (+1 charge) • Reaction with water gives off hydrogen gas and a metal hydroxide (OH ...
1st Term Review
... 14. Based on the gold foil experiment, what did Rutherford conclude about the atom? 15. An atom of chromium-60 contains how many protons, neutron and electrons? 16. What is the difference between a compound and an element? 17. What is the electron configuration of a neutral calcium atom? 18. Atomic ...
... 14. Based on the gold foil experiment, what did Rutherford conclude about the atom? 15. An atom of chromium-60 contains how many protons, neutron and electrons? 16. What is the difference between a compound and an element? 17. What is the electron configuration of a neutral calcium atom? 18. Atomic ...
Document
... • Using the clues from the 7 blue scientist cards, match up the models (yellow cards) with the appropriate scientist card • When you feel that you have made the appropriate matches, make sure that your cards are in chronological order (Hint: There are dates on the blue cards!) ...
... • Using the clues from the 7 blue scientist cards, match up the models (yellow cards) with the appropriate scientist card • When you feel that you have made the appropriate matches, make sure that your cards are in chronological order (Hint: There are dates on the blue cards!) ...
Ions and Isotopes - Mr. Kleiman`s Wiki
... Isotopes – Changing the Atomic Mass Remember: There are 3 sub-atomic particles; protons, electrons and neutrons. Change the number of protons and you change the element Change the number of electrons and you create an ion Question: What happens when you change the number of neutrons? Sometimes at ...
... Isotopes – Changing the Atomic Mass Remember: There are 3 sub-atomic particles; protons, electrons and neutrons. Change the number of protons and you change the element Change the number of electrons and you create an ion Question: What happens when you change the number of neutrons? Sometimes at ...
The Periodic Table and Periodic Law
... • an indication of how strongly an atom’s nucleus holds onto its electrons ...
... • an indication of how strongly an atom’s nucleus holds onto its electrons ...
Chapter 3 - WordPress.com
... • Came up with his own Atomic Theory • All elements are composed of tiny particles called atoms which cannot be broken into smaller parts. ...
... • Came up with his own Atomic Theory • All elements are composed of tiny particles called atoms which cannot be broken into smaller parts. ...
Grade 9 Science Unit: Atoms and Elements Topic 4: Periodic Table
... Some metals, such as __________ and ___________, are too ___________ to be used alone for some purposes. Therefore, to make a substance stronger, some metals are often melted and mixed with other melted metal elements. The mixture is cooled to become a solid ____________. A solution of two or more m ...
... Some metals, such as __________ and ___________, are too ___________ to be used alone for some purposes. Therefore, to make a substance stronger, some metals are often melted and mixed with other melted metal elements. The mixture is cooled to become a solid ____________. A solution of two or more m ...
Chapter 2 Atoms, Molecules and Ions
... Most of the elements are metals in the periodic table. Metals: Conduction of heat and electricity, malleability, ductility, lustrous, form positive ions Nonmetals: appear in the upper right hand corner of the periodic table except hydrogen. Nonmetals lack the physical properties that characterize th ...
... Most of the elements are metals in the periodic table. Metals: Conduction of heat and electricity, malleability, ductility, lustrous, form positive ions Nonmetals: appear in the upper right hand corner of the periodic table except hydrogen. Nonmetals lack the physical properties that characterize th ...
Valence electrons and Lewis Dot Structures
... A _______________ can be a single atom, 2 or more atoms of the same element, or a group of atoms of different elements that have combined to form a compound. ...
... A _______________ can be a single atom, 2 or more atoms of the same element, or a group of atoms of different elements that have combined to form a compound. ...
Nuclear Chemistry Worksheet
... orbitals oriented in different directions) I.e. in the p orbital, there are three orbitals. For ...
... orbitals oriented in different directions) I.e. in the p orbital, there are three orbitals. For ...
Chapter 4 Powerpoint
... Atoms are neither created nor destroyed in any chemical reaction. A given compound always has the same relative numbers and kinds of atoms. ...
... Atoms are neither created nor destroyed in any chemical reaction. A given compound always has the same relative numbers and kinds of atoms. ...
Unit2StudyGuide
... Which two particles have the same mass? What particles make up the nucleus? What particles are NOT in the nucleus? What particles make up the atomic mass? What particles have insignificant mass, but take up most of the space of an atom? Atoms of the same element but have a different mass are _______ ...
... Which two particles have the same mass? What particles make up the nucleus? What particles are NOT in the nucleus? What particles make up the atomic mass? What particles have insignificant mass, but take up most of the space of an atom? Atoms of the same element but have a different mass are _______ ...
The Structure of the Atom
... Electrons: - charge, relative mass = 0.0005 atomic mass units (amu); round to 0 (not factored in when figuring total mass of an atom) ...
... Electrons: - charge, relative mass = 0.0005 atomic mass units (amu); round to 0 (not factored in when figuring total mass of an atom) ...
Atoms - Grass Range Science
... • Today’s atomic model is based on wave mechanics. A full timeline can be found here. • The wave model states: o Electrons do not travel around the nucleus in a specific path, but can be found in an area called the electron cloud. o An atom has a small positively charged nucleus surrounded by a larg ...
... • Today’s atomic model is based on wave mechanics. A full timeline can be found here. • The wave model states: o Electrons do not travel around the nucleus in a specific path, but can be found in an area called the electron cloud. o An atom has a small positively charged nucleus surrounded by a larg ...
Ch 4 - USD305.com
... – Outermost electrons found in energy levels=valence electrons – First energy level can hold 2 electrons, all after that can hold 8 electrons ...
... – Outermost electrons found in energy levels=valence electrons – First energy level can hold 2 electrons, all after that can hold 8 electrons ...
atomic-models
... when passed through an evacuated tube (demos). These rays have a small mass and are negative. Thompson noted that these negative subatomic particles were a fundamental part of all atoms. 1) Dalton’s “Billiard ball” model (1800-1900) Atoms are solid and indivisible. 2) Thompson “Plum pudding” model ( ...
... when passed through an evacuated tube (demos). These rays have a small mass and are negative. Thompson noted that these negative subatomic particles were a fundamental part of all atoms. 1) Dalton’s “Billiard ball” model (1800-1900) Atoms are solid and indivisible. 2) Thompson “Plum pudding” model ( ...
Chapter 03
... shell number and subshell letter in order of increasing energy. The number of electrons actually occupying each subshell is indicated by a superscript. ►A graphic representation can be made by indicating each orbital as a line and each electron as an arrow. The head of the arrow indicates the electr ...
... shell number and subshell letter in order of increasing energy. The number of electrons actually occupying each subshell is indicated by a superscript. ►A graphic representation can be made by indicating each orbital as a line and each electron as an arrow. The head of the arrow indicates the electr ...
2.1 Elements
... Configuration of an Atom Rule [2] Each orbital holds a maximum of 2 electrons. Rule [3] When orbitals are equal in energy: •1 electron is added to each orbital until all of the orbitals are half-filled. •Then, the orbitals can be completely filled. ...
... Configuration of an Atom Rule [2] Each orbital holds a maximum of 2 electrons. Rule [3] When orbitals are equal in energy: •1 electron is added to each orbital until all of the orbitals are half-filled. •Then, the orbitals can be completely filled. ...