Chapter 2 ppt
... Example: 3 kinds of Hydrogen atoms All have one proton and one electron Atomic number for all three isotopes = 1 Mass number varies with number of neutrons Hydrogen-1: one proton and no neutrons Hydrogen-2: one proton and 1 neutron Hydrogen-3: one proton and 2 neutrons ...
... Example: 3 kinds of Hydrogen atoms All have one proton and one electron Atomic number for all three isotopes = 1 Mass number varies with number of neutrons Hydrogen-1: one proton and no neutrons Hydrogen-2: one proton and 1 neutron Hydrogen-3: one proton and 2 neutrons ...
Do Now
... Dalton’s Atomic Theory 4. Chemical reactions occur when atoms are separated from each other, joined, or rearranged in different combinations. Atoms of one element are never changed into atoms of another element as a result of a chemical reaction. Compound made by chemically combining atoms of eleme ...
... Dalton’s Atomic Theory 4. Chemical reactions occur when atoms are separated from each other, joined, or rearranged in different combinations. Atoms of one element are never changed into atoms of another element as a result of a chemical reaction. Compound made by chemically combining atoms of eleme ...
UNIT 2 – THE ATOM - Neshaminy School District
... All the mass of the atom is in the nucleus since that is where the protons and neutrons are and they are the only particles that have mass. You can determine the atom’s mass using the following equation. ...
... All the mass of the atom is in the nucleus since that is where the protons and neutrons are and they are the only particles that have mass. You can determine the atom’s mass using the following equation. ...
The Chemical Earth
... Valence energy level The outermost shell of an atom is referred to as the valence energy level. Similarly, the electrons that occupy the outermost shell are called valence electrons. In the periodic table elements with the same number of valence electrons occur in the same column or group. ...
... Valence energy level The outermost shell of an atom is referred to as the valence energy level. Similarly, the electrons that occupy the outermost shell are called valence electrons. In the periodic table elements with the same number of valence electrons occur in the same column or group. ...
Inside an Atom - Mrs. Ericka Williams
... They are identified by the number or protons because this number never changes without changing the identity of the element Are atoms of the same element that have different numbers of neutrons; for example, the three isotopes of carbon differ in the number of neutrons in each nucleus such as Carbon ...
... They are identified by the number or protons because this number never changes without changing the identity of the element Are atoms of the same element that have different numbers of neutrons; for example, the three isotopes of carbon differ in the number of neutrons in each nucleus such as Carbon ...
ATOMIC STRUCTURE: Atomic History
... 1. Electrons are not stationary in orbits 2. Electrons can move around within an orbit to any random spot that they find, and can also move between levels within an atom ...
... 1. Electrons are not stationary in orbits 2. Electrons can move around within an orbit to any random spot that they find, and can also move between levels within an atom ...
CHEM_1305_Practice_Exam_2
... 2) What is the general term that refers to either visible or invisible radiant energy? A) continuous spectrum ...
... 2) What is the general term that refers to either visible or invisible radiant energy? A) continuous spectrum ...
Chapter 3: Atom Powerpoint
... of the same two elements, then the ratio of the masses of the second element combined with a certain masses of the first element is always a ratio of small whole numbers. An example of the law of multiple proportions is the existence of A) FeCl3 and Fe(S04)3 C) CO and CO2 B) O2 and O3 D) FeCl2 and F ...
... of the same two elements, then the ratio of the masses of the second element combined with a certain masses of the first element is always a ratio of small whole numbers. An example of the law of multiple proportions is the existence of A) FeCl3 and Fe(S04)3 C) CO and CO2 B) O2 and O3 D) FeCl2 and F ...
Atoms and Elements: Are they Related?
... • What are the most commonly occurring elements in the food labels? • What items seemed to have the most amount of elements in them? • Can you predict what that means about the food item? • Why do you think the baby formula has such a variety of elements? • Can you predict what the other items on th ...
... • What are the most commonly occurring elements in the food labels? • What items seemed to have the most amount of elements in them? • Can you predict what that means about the food item? • Why do you think the baby formula has such a variety of elements? • Can you predict what the other items on th ...
General Chemistry
... electronegativity increases from left to right across a period.electronegativity decreases down a group.small atoms with many protons in the nucleus have high electronegativity.the greater the difference in electronegativity of the two atoms, bond will be more polar. The most electronegative element ...
... electronegativity increases from left to right across a period.electronegativity decreases down a group.small atoms with many protons in the nucleus have high electronegativity.the greater the difference in electronegativity of the two atoms, bond will be more polar. The most electronegative element ...
Review Key
... toward the positive field. The ray bent away from the negative field. From this data, and knowing that likes repel and opposites attract, Thomson decided that since the ray is attracted to the positive field, and repelled by the negative field, it must be negative. Thus, he determined that the catho ...
... toward the positive field. The ray bent away from the negative field. From this data, and knowing that likes repel and opposites attract, Thomson decided that since the ray is attracted to the positive field, and repelled by the negative field, it must be negative. Thus, he determined that the catho ...
atoms
... and neutrons. Some nuclei are unstable because they have too many or too few neutrons. This is especially true for heavier elements such as uranium and plutonium. • The release of nuclear particles and energy is called radioactive decay. • In these nuclei, repulsion builds up. The nucleus must relea ...
... and neutrons. Some nuclei are unstable because they have too many or too few neutrons. This is especially true for heavier elements such as uranium and plutonium. • The release of nuclear particles and energy is called radioactive decay. • In these nuclei, repulsion builds up. The nucleus must relea ...
Atomic Theories during history
... The concept of the smallest particle was conceived in the 5th century BC by Leucippus of Miletus. His pupil, Democritus of Abdera (picture) developed five major points that their theory was based upon. Historians have discovered this from the quotations of other Greeks (most of the original document ...
... The concept of the smallest particle was conceived in the 5th century BC by Leucippus of Miletus. His pupil, Democritus of Abdera (picture) developed five major points that their theory was based upon. Historians have discovered this from the quotations of other Greeks (most of the original document ...
The Bohr Model
... location of an electron. The probable location of an electron is based on how much energy the electron has. • According to the modern atomic model, at atom has a small positively charged nucleus surrounded by a large region in which there are enough electrons to make an atom neutral. ...
... location of an electron. The probable location of an electron is based on how much energy the electron has. • According to the modern atomic model, at atom has a small positively charged nucleus surrounded by a large region in which there are enough electrons to make an atom neutral. ...
File
... A particle smaller than an atom had to exist. Thomson called the negatively charged “corpuscles,” today known as electrons. Since the gas was known to be neutral, having no charge, he reasoned that there must be positively charged particles in the atom. But he could never find them. ...
... A particle smaller than an atom had to exist. Thomson called the negatively charged “corpuscles,” today known as electrons. Since the gas was known to be neutral, having no charge, he reasoned that there must be positively charged particles in the atom. But he could never find them. ...
P-Atomic_Structure_Ppt - McKinney ISD Staff Sites
... which was only a few atoms thick. they found that although most of them passed through. About 1 in 10,000 hit ...
... which was only a few atoms thick. they found that although most of them passed through. About 1 in 10,000 hit ...
Law of Multiple Proportions
... 400 B.C. – Democritus proposed the existence of fundamental particles of matter that were indivisible and indestructible - “atomos”. Aristotle thought all matter was continuous; he did not believe in atoms. Neither idea was supported by any experimental evidence – speculation only. ...
... 400 B.C. – Democritus proposed the existence of fundamental particles of matter that were indivisible and indestructible - “atomos”. Aristotle thought all matter was continuous; he did not believe in atoms. Neither idea was supported by any experimental evidence – speculation only. ...
Atomic Models:
... – Bohr- only certain orbits are possible – they gain and lose energy as they move from one orbital to another • Distiguished between protons and neutron while Rutherford did not ...
... – Bohr- only certain orbits are possible – they gain and lose energy as they move from one orbital to another • Distiguished between protons and neutron while Rutherford did not ...
radiopharmaceutics l..
... ► Each shell is designated by quantum number n, called the principal quantum number. ► Each energy shell is subdivided into subshells or orbitals, which are designated as s, p, d, f, etc. (azimuthal quantum numbers, l). l = 0,1,2……etc. ► The electron will enter the orbital of the lowest energy firs ...
... ► Each shell is designated by quantum number n, called the principal quantum number. ► Each energy shell is subdivided into subshells or orbitals, which are designated as s, p, d, f, etc. (azimuthal quantum numbers, l). l = 0,1,2……etc. ► The electron will enter the orbital of the lowest energy firs ...