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Chapter 4 - Elements and the Periodic Table I. Introduction to atoms
... B. Metals in the periodic table 1. Reactivity of elements decreases as you move from left to right 2. Alkali metals, Group 1 a. React by losing an electron b. Found only as compounds 3. Alkaline earth metals, Group 2 a. React by losing 2 electrons b. Found only as compounds c. Good conductors of ele ...
... B. Metals in the periodic table 1. Reactivity of elements decreases as you move from left to right 2. Alkali metals, Group 1 a. React by losing an electron b. Found only as compounds 3. Alkaline earth metals, Group 2 a. React by losing 2 electrons b. Found only as compounds c. Good conductors of ele ...
Topic 2: Atomic structure Partial and Long questions Mark scheme 1
... outermost/3p electron has low IE because it is far/furthest from the nucleus; electron(s) in second shell/2p electrons are much closer (to nucleus) and need much more energy to remove/IE much higher/very high/there is a big jump in IE; electron(s) in first/innermost shell/1s electrons are even close ...
... outermost/3p electron has low IE because it is far/furthest from the nucleus; electron(s) in second shell/2p electrons are much closer (to nucleus) and need much more energy to remove/IE much higher/very high/there is a big jump in IE; electron(s) in first/innermost shell/1s electrons are even close ...
Nuclear Chemistry powerpoint
... ) and no charge ( ). Thus, it causes change in or numbers. Gamma rays almost accompany alpha and beta radiation. However, since there is effect on mass number or atomic number, they are usually from nuclear equations. ...
... ) and no charge ( ). Thus, it causes change in or numbers. Gamma rays almost accompany alpha and beta radiation. However, since there is effect on mass number or atomic number, they are usually from nuclear equations. ...
John Dalton William Crookes J.J. Thomson Ernest Rutherford
... Atomic Mass Unit (u) – A unit used to express the masses of atomic particles and atoms (1u=1.66 x 10-27Kg) Electron Proton Neutron ...
... Atomic Mass Unit (u) – A unit used to express the masses of atomic particles and atoms (1u=1.66 x 10-27Kg) Electron Proton Neutron ...
Mass Defect (not in book)
... element. In ordinary chemical reactions, atoms are rearranged; they are not changed into other elements. In nuclear reaction atoms can and do change from one element to another. Obviously, this change requires a change in the nucleus of the atoms involved. This chapter focuses on the changes that th ...
... element. In ordinary chemical reactions, atoms are rearranged; they are not changed into other elements. In nuclear reaction atoms can and do change from one element to another. Obviously, this change requires a change in the nucleus of the atoms involved. This chapter focuses on the changes that th ...
Atomic Structure Notes Atoms
... Electron cloud or energy rings -Atoms are made of subatomic particles: protons, neutrons, & electrons ...
... Electron cloud or energy rings -Atoms are made of subatomic particles: protons, neutrons, & electrons ...
Nuclear binding energy = Δmc2 - University of Toronto Physics
... binding energy of the electron in a hydrogen atom is shown below. The nuclear binding energies are on the order of a million times greater than the electron binding energies of atoms. ...
... binding energy of the electron in a hydrogen atom is shown below. The nuclear binding energies are on the order of a million times greater than the electron binding energies of atoms. ...
Chapter 3
... • Law of Definite Proportions : • All compounds have the same proportion by mass for example: NaCl is always 60.66% chlorine and 39.34% sodium • Law of Multiple Proportions: when two elements can form two compounds, the masses that combine are in simple whole number ratios, CO and CO2 ...
... • Law of Definite Proportions : • All compounds have the same proportion by mass for example: NaCl is always 60.66% chlorine and 39.34% sodium • Law of Multiple Proportions: when two elements can form two compounds, the masses that combine are in simple whole number ratios, CO and CO2 ...
Nuclear Weapons (and Energy) Each element has different number
... blows things down. In atomic bomb, roughly 20% of Pl or Ur decays by induced fiss. This means that after explosion there are a. about 20% fewer atomic nuclei than before with correspondingly fewer total neutrons and protons, b. 20% fewer at. nucl. but about same total neut. and protons. c. about ...
... blows things down. In atomic bomb, roughly 20% of Pl or Ur decays by induced fiss. This means that after explosion there are a. about 20% fewer atomic nuclei than before with correspondingly fewer total neutrons and protons, b. 20% fewer at. nucl. but about same total neut. and protons. c. about ...
Chapter Review Answers
... 15. In what ways are protons and neutrons alike? How are they different? Protons and neutrons are alike because they are both located in the nucleus and have the same mass. They are different because protons have a positive charge and neutrons have no charge. 16. Nitrogen-14 and Nitrogen-15 are isot ...
... 15. In what ways are protons and neutrons alike? How are they different? Protons and neutrons are alike because they are both located in the nucleus and have the same mass. They are different because protons have a positive charge and neutrons have no charge. 16. Nitrogen-14 and Nitrogen-15 are isot ...
atoms lesson
... • The ELECTRON is always moving in the ELECTRON SHELL. It moves too fast to locate. • The PROTON has a POSITIVE charge. • The NEUTRON has NO CHARGE. • The center of the atom is made up of the PROTONS and NEUTRONS and is called the ...
... • The ELECTRON is always moving in the ELECTRON SHELL. It moves too fast to locate. • The PROTON has a POSITIVE charge. • The NEUTRON has NO CHARGE. • The center of the atom is made up of the PROTONS and NEUTRONS and is called the ...
chapter-7-explore-page-248-protons-neutrons
... Becquerel and the Curies discovered that the radiation released by the uranium was made of energy and particles. This radiation came from the nuclei of the uranium atoms. When this happens, the number of protons in one atom of uranium changes. When uranium releases radiation, it changes to a diffe ...
... Becquerel and the Curies discovered that the radiation released by the uranium was made of energy and particles. This radiation came from the nuclei of the uranium atoms. When this happens, the number of protons in one atom of uranium changes. When uranium releases radiation, it changes to a diffe ...
Development of Atomic Theory
... that the ratio of the masses of elements in any given compound is always the, same. The law of 0, proposed soon after, states that the masses of one element that combine with a fixed mass of another element in different compounds are in simple, whole-number ratios. An atomic theory based on these la ...
... that the ratio of the masses of elements in any given compound is always the, same. The law of 0, proposed soon after, states that the masses of one element that combine with a fixed mass of another element in different compounds are in simple, whole-number ratios. An atomic theory based on these la ...
Name
... 5. What is the charge of an atom and why? Atoms are neutral because the positive protons cancel the negative electrons. 6. Summarize the main concepts of Dalton’s Atomic Theory. 1. All elements are composed of tiny indivisible particles called atoms. 2. Atoms of the same element are identical AND at ...
... 5. What is the charge of an atom and why? Atoms are neutral because the positive protons cancel the negative electrons. 6. Summarize the main concepts of Dalton’s Atomic Theory. 1. All elements are composed of tiny indivisible particles called atoms. 2. Atoms of the same element are identical AND at ...
Hydrogen Models 1
... this isotope. It is sometimes called Protium. A hydrogen atom that has one proton and one neutron in its nucleus is called Deuterium. Deuterium is not radioactive. Water made from deuterium is called heavy water because the extra neutron makes it heavier. It is used in nuclear reactors. The third is ...
... this isotope. It is sometimes called Protium. A hydrogen atom that has one proton and one neutron in its nucleus is called Deuterium. Deuterium is not radioactive. Water made from deuterium is called heavy water because the extra neutron makes it heavier. It is used in nuclear reactors. The third is ...
CHAPTER 2 The nucleus and radioactive decay - Cin
... A>100 are unstable towards spontaneous fission into two nuclei of approximately the same mass and that nuclei above A>140 will tend to decay by α emission. A physical explanation for the binding energy Figure 3 shows a plot of Z versus N for all stable nuclei. One of the most important features is t ...
... A>100 are unstable towards spontaneous fission into two nuclei of approximately the same mass and that nuclei above A>140 will tend to decay by α emission. A physical explanation for the binding energy Figure 3 shows a plot of Z versus N for all stable nuclei. One of the most important features is t ...
chapter 19 - Celina City Schools
... A) ____________ - the smallest piece of matter that retains the property of the element. 1) Parts of the atom: a) ____________ Positively-charged center Contains most of the mass of the atom b) ____________ (p+) Positively-charged particle Located inside of the nucleus The mass of a proton ...
... A) ____________ - the smallest piece of matter that retains the property of the element. 1) Parts of the atom: a) ____________ Positively-charged center Contains most of the mass of the atom b) ____________ (p+) Positively-charged particle Located inside of the nucleus The mass of a proton ...
Nuclear Chemistry Radioactivity
... – When uranium-235 undergoes fission, more neutrons are released creating the possibility of a chain reaction. – A chain reaction is a self-sustaining series of nuclear fissions caused by the absorption of neutrons released from previous nuclear fissions. ...
... – When uranium-235 undergoes fission, more neutrons are released creating the possibility of a chain reaction. – A chain reaction is a self-sustaining series of nuclear fissions caused by the absorption of neutrons released from previous nuclear fissions. ...
Representing Elements and Atoms
... If a proton is somehow added to this atom, it is no longer carbon - it becomes nitrogen (atomic number 7), a completely different element ...
... If a proton is somehow added to this atom, it is no longer carbon - it becomes nitrogen (atomic number 7), a completely different element ...
7.1 Note Outline
... Radiation is a term used to describe the high energy rays and particles given off by radioactive substances. An isotope is an atom of an element that has a slight difference in the number of neutrons as compared to other isotopes of the same element. Radioisotopes decay into normal isotopes, releasi ...
... Radiation is a term used to describe the high energy rays and particles given off by radioactive substances. An isotope is an atom of an element that has a slight difference in the number of neutrons as compared to other isotopes of the same element. Radioisotopes decay into normal isotopes, releasi ...
Chapter 4 Review Worksheet
... 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. ...
Atomic Structure and the Periodic Table
... Moves around the nucleus at such speeds that they cannot be seen. ...
... Moves around the nucleus at such speeds that they cannot be seen. ...
Nuclear Processes
... When a radioactive nucleus such as U23892 decays it often produces another radioactive isotope which goes on to decay further. ...
... When a radioactive nucleus such as U23892 decays it often produces another radioactive isotope which goes on to decay further. ...