Summer Assignment 2015
... all work, report your answers to the proper number of significant figures, and your answers must have the appropriate units. Refer to the links on the last page for help. Feel free to e-mail me with any questions. [email protected] 1. How many significant figures are in each of the following measu ...
... all work, report your answers to the proper number of significant figures, and your answers must have the appropriate units. Refer to the links on the last page for help. Feel free to e-mail me with any questions. [email protected] 1. How many significant figures are in each of the following measu ...
Atom QuizO
... B.) An atom of the same element that have a different number of neutrons C.) An element that has a negative charge D.) A subatomic particle that has no charge ...
... B.) An atom of the same element that have a different number of neutrons C.) An element that has a negative charge D.) A subatomic particle that has no charge ...
Atom Notes
... other atom of the same element. Every atom of a specific element is different from an atom of a different element. How? It’s all about the structure of the atom! ...
... other atom of the same element. Every atom of a specific element is different from an atom of a different element. How? It’s all about the structure of the atom! ...
coppin state college
... March, 2004. Time 60 minutes. Dr. Alfred N. Amah This examination consists of 38 multiple choice questions with five possible responses. Read each question carefully and choose the best response. There is only one correct response for each question. You are to answer all questions in this examinatio ...
... March, 2004. Time 60 minutes. Dr. Alfred N. Amah This examination consists of 38 multiple choice questions with five possible responses. Read each question carefully and choose the best response. There is only one correct response for each question. You are to answer all questions in this examinatio ...
Chemical Foundations: Elements, Atoms and Ions
... All atoms of a given element are identical Atoms of a given element are different from those of any other element 4. Atoms of one element can combine with atoms of other elements to form compounds 5. Atoms are indivisible and can not be created or destroyed in a chemical reaction http://web.visionle ...
... All atoms of a given element are identical Atoms of a given element are different from those of any other element 4. Atoms of one element can combine with atoms of other elements to form compounds 5. Atoms are indivisible and can not be created or destroyed in a chemical reaction http://web.visionle ...
Chemistry 2202 Background Information – Chapter 1 (pg
... Mass number (A) – The total number of neutrons and protons in the nucleus of an atom; each proton or neutron is counted as one unit of mass number. Atomic symbol – The symbol for the element – Fig. 1.8 pg. 13 Number of neutrons = Mass number – Atomic number =A–Z In any neutral atom of an element, ...
... Mass number (A) – The total number of neutrons and protons in the nucleus of an atom; each proton or neutron is counted as one unit of mass number. Atomic symbol – The symbol for the element – Fig. 1.8 pg. 13 Number of neutrons = Mass number – Atomic number =A–Z In any neutral atom of an element, ...
46 Pd Palladium 106.4
... ____ 4. What did Democritus, Dalton, Thomson, Rutherford, and Bohr all have in common? A. They each identified new elements. B. They each identified new isotopes of atoms. C. They each contributed to the development of the atomic theory. D. They each conducted experiments in which particles collided ...
... ____ 4. What did Democritus, Dalton, Thomson, Rutherford, and Bohr all have in common? A. They each identified new elements. B. They each identified new isotopes of atoms. C. They each contributed to the development of the atomic theory. D. They each conducted experiments in which particles collided ...
Atomic structure
... 2.Up to this time it was thought that the hydrogen atom was the smallest particle in existence. Thomson demonstrated that electrons comprising cathode rays were nearly 2,000 times smaller in mas than the lightest known particle the hydrogen ion. 3.When a high voltage is placed across a pair of plate ...
... 2.Up to this time it was thought that the hydrogen atom was the smallest particle in existence. Thomson demonstrated that electrons comprising cathode rays were nearly 2,000 times smaller in mas than the lightest known particle the hydrogen ion. 3.When a high voltage is placed across a pair of plate ...
Document
... 10. Compared to the charge of a proton, the charge of an electron has a. A greater magnitude and the same sign b. A greater magnitude and the opposite sign c. The same magnitude and the same sign d. The same magnitude and the opposite sign 11. Which phrase describes an atom? a. A negatively charged ...
... 10. Compared to the charge of a proton, the charge of an electron has a. A greater magnitude and the same sign b. A greater magnitude and the opposite sign c. The same magnitude and the same sign d. The same magnitude and the opposite sign 11. Which phrase describes an atom? a. A negatively charged ...
Atomic Number… - Taylor County Schools
... Radioactive Decay • Nuclear reactions can change one element into another element. • In the late 1890s, scientists noticed some substances spontaneously emitted radiation, a process they called radioactivity. • The rays and particles emitted are called radiation. • A reaction that involves a change ...
... Radioactive Decay • Nuclear reactions can change one element into another element. • In the late 1890s, scientists noticed some substances spontaneously emitted radiation, a process they called radioactivity. • The rays and particles emitted are called radiation. • A reaction that involves a change ...
Unit 1B1 - Uddingston Grammar School
... Atoms R and S are isotopes of each other Atoms S and T have different chemical properties. ...
... Atoms R and S are isotopes of each other Atoms S and T have different chemical properties. ...
INTRO TO NUCLEAR CHEMISTRY
... The actual mass of the atom is measured to be 4.00260 amu! That is 0.03038 amu less then the sum of all of its particles. 3. The mass defect is caused by the conversion of mass (m) to energy (E) when the nucleus was originally formed. 4. nuclear binding energy- the energy that was released when a nu ...
... The actual mass of the atom is measured to be 4.00260 amu! That is 0.03038 amu less then the sum of all of its particles. 3. The mass defect is caused by the conversion of mass (m) to energy (E) when the nucleus was originally formed. 4. nuclear binding energy- the energy that was released when a nu ...
Chemistry Questions
... 3. The positively charged particle in the nucleus of an atom is 4. What is the total number of electrons in the nucleus of an atom of potassium-42? 5. Which of the following elements have the greatest number of neutrons? a. 37Cl b. 39K 4. An atomic mass unit is defined as exactly a. 1/16 the mass of ...
... 3. The positively charged particle in the nucleus of an atom is 4. What is the total number of electrons in the nucleus of an atom of potassium-42? 5. Which of the following elements have the greatest number of neutrons? a. 37Cl b. 39K 4. An atomic mass unit is defined as exactly a. 1/16 the mass of ...
Polonium isotopes in industry Po is used in static eliminator to
... half-life (radioactive) – the time interval that it takes for the total number of atoms of any radioactive isotope to decay and leave only one-half of the original number of atoms. [return] ionizing – pertaining to the process by which an atom, molecule, or substance acquires a negative or positive ...
... half-life (radioactive) – the time interval that it takes for the total number of atoms of any radioactive isotope to decay and leave only one-half of the original number of atoms. [return] ionizing – pertaining to the process by which an atom, molecule, or substance acquires a negative or positive ...
topic 1 sol review homework
... by the nucleus of the gold atoms. 1The nucleus is positively charged and so is the alpha particles so they are not attracted to each other. 2)They were used because the alpha particles would not be attracted to the nucleus. 9. Which atomic model has no subatomic particles? a) Rutherford b) Thomson c ...
... by the nucleus of the gold atoms. 1The nucleus is positively charged and so is the alpha particles so they are not attracted to each other. 2)They were used because the alpha particles would not be attracted to the nucleus. 9. Which atomic model has no subatomic particles? a) Rutherford b) Thomson c ...
Atoms and the Periodic Table
... A negatively charged atom is called an Anion – it has more electrons than protons. ...
... A negatively charged atom is called an Anion – it has more electrons than protons. ...
Nuclear Chemistry
... An isotope has the same atomic number but different mass number Isotopic notation Mass # ...
... An isotope has the same atomic number but different mass number Isotopic notation Mass # ...
hapter 2
... Rutherford’s gold foil experiment Atoms have a nucleus Atoms are made up mostly of space Protons exist in the nucleus with a + charge Electrons mass is 9.11 x 10-31 kg, the charge is Protons mass is 1.66 x 10-27 kg, the charge is + Neutrons mass is 1.67 x 10-27 kg, there is no charge AMU means ...
... Rutherford’s gold foil experiment Atoms have a nucleus Atoms are made up mostly of space Protons exist in the nucleus with a + charge Electrons mass is 9.11 x 10-31 kg, the charge is Protons mass is 1.66 x 10-27 kg, the charge is + Neutrons mass is 1.67 x 10-27 kg, there is no charge AMU means ...
File
... Periodic Trends (Chapter 5) Atomic Radius – distance from nucleus to outer electrons (PreIB only) Shielding – inner electrons “blocking” or “shielding” the valence electrons from the pull of the nucleus. Ionization Energy – energy needed to remove an electron Electronegativity – ability of an ...
... Periodic Trends (Chapter 5) Atomic Radius – distance from nucleus to outer electrons (PreIB only) Shielding – inner electrons “blocking” or “shielding” the valence electrons from the pull of the nucleus. Ionization Energy – energy needed to remove an electron Electronegativity – ability of an ...
Structure of Atoms - Harrison County Schools
... •An atom is considered the building blocks of matter. ...
... •An atom is considered the building blocks of matter. ...
Biology Class Notes 3-1
... Atom: basic unit of matter Made up of subatomic particles i. Protons: positive charge ii. Neutrons: no charge iii. Electrons: negative charge Atoms have the same number of protons and electrons—makes them neutral Protons and neutrons are found inside the called in what is called the nucleus ...
... Atom: basic unit of matter Made up of subatomic particles i. Protons: positive charge ii. Neutrons: no charge iii. Electrons: negative charge Atoms have the same number of protons and electrons—makes them neutral Protons and neutrons are found inside the called in what is called the nucleus ...
Chemistry Notes
... and Neutrons. a) Proton – Positively charged particles. b) Neutron – Neutral particles. C. For the Elements, the number of electrons in an atom is equal to the number of Protons. This is called the Atomic Number. ...
... and Neutrons. a) Proton – Positively charged particles. b) Neutron – Neutral particles. C. For the Elements, the number of electrons in an atom is equal to the number of Protons. This is called the Atomic Number. ...
Basic Chemistry Notes II
... 3. The atomic number is the number of protons B. Neutrons 1. Found in nucleus 2. No charge 3. Can be found by subtracting the atomic number from the atomic weight C. Electrons 1. Found outside of nucleus in “shells” 2. Have a negative charge 3. Valence electrons – outermost electron shell. Most impo ...
... 3. The atomic number is the number of protons B. Neutrons 1. Found in nucleus 2. No charge 3. Can be found by subtracting the atomic number from the atomic weight C. Electrons 1. Found outside of nucleus in “shells” 2. Have a negative charge 3. Valence electrons – outermost electron shell. Most impo ...
Proton
The proton is an elementary subatomic particle, symbol p or p+, with a positive electric charge of +1e elementary charge and mass slightly less than that of a neutron. Protons and neutrons, each with mass approximately one atomic mass unit, are collectively referred to as ""nucleons"". One or more protons are present in the nucleus of an atom. The number of protons in the nucleus is referred to as its atomic number. Since each element has a unique number of protons, each element has its own unique atomic number. The word proton is Greek for ""first"", and this name was given to the hydrogen nucleus by Ernest Rutherford in 1920. In previous years Rutherford had discovered that the hydrogen nucleus (known to be the lightest nucleus) could be extracted from the nuclei of nitrogen by collision. The proton was therefore a candidate to be a fundamental particle and a building block of nitrogen and all other heavier atomic nuclei.In the modern Standard Model of particle physics, the proton is a hadron, and like the neutron, the other nucleon (particle present in atomic nuclei), is composed of three quarks. Although the proton was originally considered a fundamental particle, it is composed of three valence quarks: two up quarks and one down quark. The rest masses of the quarks contribute only about 1% of the proton's mass, however. The remainder of the proton mass is due to the kinetic energy of the quarks and to the energy of the gluon fields that bind the quarks together. Because the proton is not a fundamental particle, it possesses a physical size; the radius of the proton is about 0.84–0.87 fm.At sufficiently low temperatures, free protons will bind to electrons. However, the character of such bound protons does not change, and they remain protons. A fast proton moving through matter will slow by interactions with electrons and nuclei, until it is captured by the electron cloud of an atom. The result is a protonated atom, which is a chemical compound of hydrogen. In vacuum, when free electrons are present, a sufficiently slow proton may pick up a single free electron, becoming a neutral hydrogen atom, which is chemically a free radical. Such ""free hydrogen atoms"" tend to react chemically with many other types of atoms at sufficiently low energies. When free hydrogen atoms react with each other, they form neutral hydrogen molecules (H2), which are the most common molecular component of molecular clouds in interstellar space. Such molecules of hydrogen on Earth may then serve (among many other uses) as a convenient source of protons for accelerators (as used in proton therapy) and other hadron particle physics experiments that require protons to accelerate, with the most powerful and noted example being the Large Hadron Collider.