Conceptual Integrated Science (3rd Edition)

Chapter 9

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Only one type of atom.  ; Elements are the tiny ... more

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  An AtomAn ElementAtoms are the smallest unit of ... more

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Co ; The atomic symbol for Cobalt is Co. Its ... more

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Atomic number helps in listing the elements in ... more

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Atomic numberMass numberIt is given by the total ... more

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Atoms of an element having equal atomic number but... more

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Metallic. ; Metals are placed on the left side and... more

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7 Periods.18 Groups. ; Periodic table: It is an ... more

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Gradually changes. ; The periodic table is divided... more

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A spectroscope splits the light emitted by atoms ... more

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Heat energy or electric energy. ; When atoms are ... more

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Because each element has unique atomic spectra. ; ... more

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Light energy is quantized and each discrete packet... more

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Far from the nucleus. ; According to Neils Bohr, ... more

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No. ; Bohr developed an abstract model in which an... more

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Louis de Broglie. ; De Broglie was the first who ... more

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The electron microscope. ; Electron microscope: It... more

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Self-reinforcing. ; The electron within an atom ... more

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The latter statement is true. ; Noble gas shell ... more

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Electrons in the outermost shell of atoms. ; The ... more

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The maximum number of electrons in each shell is ... more

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Hydrogen. ; Hydrogen is the oldest and lightest ... more

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No ; To see any object using a particular ... more

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Nucleus. ; Electrons, protons, and neutrons are ... more

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About a million trillion atoms.  ; The size of the... more

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In that case, atoms would be the size of ping-pong... more

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Indirectly. ; Atoms cannot be seen directly, but ... more

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A physical model is a representation of a model ... more

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A conceptual model ; A conceptual model is a ... more

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An electron is the lightest of these three ... more

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Periodic table: It's an array made up of rows and ... more

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All three given elements have a mass of 1 g. The ... more

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Periodic table:It is an arrangement of elements in... more

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Periodic table: It is an arrangement of elements ... more

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slightly greater.The atomic mass of an element is ... more

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All isotopes of an element have equal atomic ... more

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All isotopes of an element have equal atomic ... more

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Due to electromagnetic repulsion. ; An atom is a ... more

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The animal d follows the animal c by molecules ... more

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No. ; The odor can be smelled when the molecules ... more

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In the explosions of ancient stars. ; Conservation... more

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Due to electromagnetic repulsion. ; An atom is a ... more

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From the fire of ancient stars. ; All the ... more

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Yes. ; Every object in the universe is made up of ... more

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Due to different types of atoms. ; Elements are ... more

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Due to different types of atoms, elements and ... more

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Elements are the tiny particles which can not be ... more

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The bonds formed by heavy water () are stronger ... more

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; Oxygen-16 atom has 8 protons and 8 neutrons.On ... more

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99 amu.Technetium (Tc). ; Atomic mass: The mass of... more

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26 ; An atom contains electrons, protons and ... more

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Neutron is a neutral and massive particle and it ... more

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Both given elements have a mass of 1 g. The sample... more

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Since the mass of all the elements are not exactly... more

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Protons Electrons  ; Atoms are the fundamental ... more

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16 amu 32 amu32 amu ; Mass of an atom is known as ... more

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12 amu 44 amu ; Mass of an atom is known as atomic... more

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Carbon dioxide molecule, ; The mass of a molecule ... more

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Exhale.Gain weight. ; The atom is a very tiny ... more

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Gains weight. ; The atom is a very tiny ... more

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Atoms are the smallest unit of matter and are ... more

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Because neutrons have no charge. ; Protons and ... more

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Due to periodic arrangement of elements. ; In a ... more

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The use of gallium is impractical as a computer ... more

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Due to completely filled shells of helium atoms... more

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It indicates that the elements belonging to the ... more

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Atomic symbol is SeMass number=79Atomic number=... more

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Using a conceptual model. ; Conceptual model: It ... more

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Due to the smaller size of the atom. ; In order to... more

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Due to the structure of atom. ; In order to ... more

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Each has the same goal of making the understanding... more

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For Gold coins, Car engines and Viruses - Physical... more

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To give a conceptual representation of an atom and... more

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With the help of the light emitted by them. ; ... more

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The frequency of emitted light depends on the ... more

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With the help of color of light emitted by two ... more

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Electron.Their higher energy level and their ... more

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Because electrons are restricted to a discrete ... more

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Due to the dependence of spectral lines on the ... more

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Energy level of an electron. ; Bohr’s planetary ... more

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Blue. ; When atoms of an element jump from higher ... more

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Atomic spectra will contain white light. ; Atomic ... more

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Due to the standing waves produced by the cord. ; ... more

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This is in respect with the allowed energy level ... more

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Atomic spectra will contain white light. ; When ... more

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This analogous to an electron by the fact that the... more

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Due to the equal number of valence electrons which... more

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No ; According to the noble gas shell model, ... more

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shell: 2 electrons and shell: 8 electrons and ... more

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Due to the difference in their atomic number and ... more

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Because neon has no valence electron. ; Noble gas ... more

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Due to the difference in bonding of the outermost ... more

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Due to the fact that every person on the planet is... more

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Due to the fact that atoms travel from person to ... more

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The subatomic particles such as electrons, protons... more

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Due to the air molecules inside the object escape ... more

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The lifetime of atoms does not depend on the age ... more

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Atomic number of an element is the number of ... more

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For each element, scientists have made a precise ... more

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Atomic mass: The mass of an atom is known as ... more

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The formula to calculate the atomic mass of an ... more

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Atomic size is a periodic characteristic.  Moving ... more

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Periodic table: It is an array consisting rows and... more

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Physical model: It is a smaller or larger physical... more

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Electrons are able to vibrate only at a particular... more

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The atomic number of sodium (Na) is 11. Atomic ... more

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