File - Science with Mr Thompson
... 6. Number of electrons = number of protons because an atom is always neutral! 7. Neutrons: Carry a neutral charge. Make atoms stable (or not). 8. Atomic number: The number of protons in the nucleus of the atom, which determines its chemical properties and its position in periodic table. Examples: Ox ...
... 6. Number of electrons = number of protons because an atom is always neutral! 7. Neutrons: Carry a neutral charge. Make atoms stable (or not). 8. Atomic number: The number of protons in the nucleus of the atom, which determines its chemical properties and its position in periodic table. Examples: Ox ...
The number of neutrons in the nucleus of a specific atom is equal to its
... describe regions of space in which one is most likely to find an electron describe exact paths for electron motion give a description of the atomic structure which is essentially the same as the Bohr model allow scientists to calculate an exact volume for the hydrogen atom ...
... describe regions of space in which one is most likely to find an electron describe exact paths for electron motion give a description of the atomic structure which is essentially the same as the Bohr model allow scientists to calculate an exact volume for the hydrogen atom ...
CHEMISTRY
... would be quite a task to memorize the details of all of them separately. To reduce the amount that we have to know, scientists classify reactions into types. Every reaction within a type follows a particular pattern. So, instead of memorizing specific individual reactions we memorize the types of re ...
... would be quite a task to memorize the details of all of them separately. To reduce the amount that we have to know, scientists classify reactions into types. Every reaction within a type follows a particular pattern. So, instead of memorizing specific individual reactions we memorize the types of re ...
Chemistry SOL Review Packet CH.1 The student will investigate and
... CH 2 The student will investigate and understand that the placement of elements on the periodic table is a function of their atomic structure. The periodic table is a tool used for the investigations of a) average atomic mass, mass number, and atomic number; b) isotopes, half lives, and radioactive ...
... CH 2 The student will investigate and understand that the placement of elements on the periodic table is a function of their atomic structure. The periodic table is a tool used for the investigations of a) average atomic mass, mass number, and atomic number; b) isotopes, half lives, and radioactive ...
PPT
... Valence Shell : Outermost, highest energy shell of an atom. Valence electrons: An electron in an outermost shell of an atom. These electrons are loosely held, they are most important in determining an element’s properties. ...
... Valence Shell : Outermost, highest energy shell of an atom. Valence electrons: An electron in an outermost shell of an atom. These electrons are loosely held, they are most important in determining an element’s properties. ...
Chapter 7 Models of Atomic Structure
... subtracting the atomic number from the atomic mass (which is the total number of proton and neutrons in the nucleus) of an element. What is radioactivity? ...
... subtracting the atomic number from the atomic mass (which is the total number of proton and neutrons in the nucleus) of an element. What is radioactivity? ...
atomic I ppt R016solo2
... What families of elements are so reactive that they are only found in nature combined in compounds? ...
... What families of elements are so reactive that they are only found in nature combined in compounds? ...
Periodic Table: Why the repetition
... •Particles come in discrete chunks that can be counted. That is, they are quantized. They carry energy as kinetic energy which is infinitely adjustable. •Waves do not come in discrete chunk but instead are continuous and thus are not countable like particles. They are not quantized. They have wavele ...
... •Particles come in discrete chunks that can be counted. That is, they are quantized. They carry energy as kinetic energy which is infinitely adjustable. •Waves do not come in discrete chunk but instead are continuous and thus are not countable like particles. They are not quantized. They have wavele ...
Atoms and moles
... energy is needed to remove an electron from a piece of metal when struck with light. If light only acted as waves, any frequency would eventually have enough energy to remove an electron. But this was not seen! Only certain frequencies with certain energies could remove an electron. ...
... energy is needed to remove an electron from a piece of metal when struck with light. If light only acted as waves, any frequency would eventually have enough energy to remove an electron. But this was not seen! Only certain frequencies with certain energies could remove an electron. ...
Chapter 3 Notes PDF Version
... energy is needed to remove an electron from a piece of metal when struck with light. ¤ If light only acted as waves, any frequency would eventually have enough energy to remove an electron. But this was not seen! ¤ Only certain frequencies with certain energies could remove an electron. ...
... energy is needed to remove an electron from a piece of metal when struck with light. ¤ If light only acted as waves, any frequency would eventually have enough energy to remove an electron. But this was not seen! ¤ Only certain frequencies with certain energies could remove an electron. ...
Chemistry: Unit Organizer Name 6-__ Matter has physical properties
... Chemical Reaction: a process in which chemical bonds are broken and atoms rearranged. During the process a new substance is formed. Compound: 2 or more elements combined to make something new, Ex. Na (sodium) + Cl (chlorine) = NaCl (salt) Density:The measurement of how much mass of a substance is co ...
... Chemical Reaction: a process in which chemical bonds are broken and atoms rearranged. During the process a new substance is formed. Compound: 2 or more elements combined to make something new, Ex. Na (sodium) + Cl (chlorine) = NaCl (salt) Density:The measurement of how much mass of a substance is co ...
Atomic Structure PP
... The atoms of any particular element always have the same number of protons. For example: hydrogen atoms always contain 1 proton carbon atoms always contain 6 protons magnesium atoms always contain 12 protons. ...
... The atoms of any particular element always have the same number of protons. For example: hydrogen atoms always contain 1 proton carbon atoms always contain 6 protons magnesium atoms always contain 12 protons. ...
Questions - SMK Raja Perempuan Ipoh
... Historical Development of the Periodic Table Arrangement of elements in the Periodic Table a) Elements are arranged in an increasing order of proton number b) Vertical columns are called group ( Group 1 18) c) Horizontal rows are called period ( Period 1 7) d) Elements with similar chemical prop ...
... Historical Development of the Periodic Table Arrangement of elements in the Periodic Table a) Elements are arranged in an increasing order of proton number b) Vertical columns are called group ( Group 1 18) c) Horizontal rows are called period ( Period 1 7) d) Elements with similar chemical prop ...
Distinguishing Between Atoms
... Since the mass of atoms is so increadibly small, a unit known as an atomic mass unit (amu) was defined to make the masses of atoms easier to work with. •The amu is defined by the carbon-12 isotope of carbon. •1 amu is equal to 1/12 the mass of the carbon-12 isotope. (roughly the mass of a neutron or ...
... Since the mass of atoms is so increadibly small, a unit known as an atomic mass unit (amu) was defined to make the masses of atoms easier to work with. •The amu is defined by the carbon-12 isotope of carbon. •1 amu is equal to 1/12 the mass of the carbon-12 isotope. (roughly the mass of a neutron or ...
Review Packet
... After much observation and questioning, Democritus concluded that matter could not be divided into smaller and smaller pieces forever. Eventually the smallest possible piece would be obtained. All elements are composed of atoms. Atoms are indivisible and indestructible particles. Atoms of the sam ...
... After much observation and questioning, Democritus concluded that matter could not be divided into smaller and smaller pieces forever. Eventually the smallest possible piece would be obtained. All elements are composed of atoms. Atoms are indivisible and indestructible particles. Atoms of the sam ...
Unit Expectations – Polymers, Atom Model, Electron Configurations
... Elements as a class of substances composed of a single kind of atom, Compounds as two or more different elements chemically combined, and Mixtures as two or more different elements and/or compounds physically combined. 2. P4.p2 Introduced: _______ Basic: _________ Mastered: _________ I recognize tha ...
... Elements as a class of substances composed of a single kind of atom, Compounds as two or more different elements chemically combined, and Mixtures as two or more different elements and/or compounds physically combined. 2. P4.p2 Introduced: _______ Basic: _________ Mastered: _________ I recognize tha ...
Chemical Bonds Study Guide Answer Key
... Define the following: 1. Chemical formula - the way of expressing information about the proportions of atoms that constitute a particular chemical compound, using element symbols and numbers. 2. Molecule- electrically neutral group of two or more atoms held together by chemical bonds 3. Valence elec ...
... Define the following: 1. Chemical formula - the way of expressing information about the proportions of atoms that constitute a particular chemical compound, using element symbols and numbers. 2. Molecule- electrically neutral group of two or more atoms held together by chemical bonds 3. Valence elec ...
Intro. to Chemistry Part 2
... • Mg loses two electrons to become Mg+2 • Nitrogen gains three electrons to become N–3. • For a neutral species, the number of electrons lost and gained must be equal. • However, Mg can only lose electrons in twos and N can only accept electrons in threes. • Therefore, Mg needs to lose six electrons ...
... • Mg loses two electrons to become Mg+2 • Nitrogen gains three electrons to become N–3. • For a neutral species, the number of electrons lost and gained must be equal. • However, Mg can only lose electrons in twos and N can only accept electrons in threes. • Therefore, Mg needs to lose six electrons ...
development of atomic models
... predict the probability of where to find them. There is also densely packed center called the nucleus where protons and neutrons are found. Summary of the modern model All elements are composed of_______________. All atoms of the same element are alike in those________________________________ that d ...
... predict the probability of where to find them. There is also densely packed center called the nucleus where protons and neutrons are found. Summary of the modern model All elements are composed of_______________. All atoms of the same element are alike in those________________________________ that d ...
Atomic Theory - hrsbstaff.ednet.ns.ca
... When a sample of hydrogen gas received a high-energy spark, the H2 molecules absorb energy, and some of the H-H bonds are broken. The resulting hydrogen atoms are excited; that is, they contain excess energy, which they release by emitting light of various wavelengths to produce what is called the ...
... When a sample of hydrogen gas received a high-energy spark, the H2 molecules absorb energy, and some of the H-H bonds are broken. The resulting hydrogen atoms are excited; that is, they contain excess energy, which they release by emitting light of various wavelengths to produce what is called the ...
Electron Proton Neutron
... The mass number of an element is the sum of the number of protons and neutrons present in the atom of that element. For example, the atom of boron has 5 protons and 6 neutrons. So, the mass number of boron is 5 + 6 = 11. ...
... The mass number of an element is the sum of the number of protons and neutrons present in the atom of that element. For example, the atom of boron has 5 protons and 6 neutrons. So, the mass number of boron is 5 + 6 = 11. ...