Chapter 3 Power Point
... are much more massive than electrons Scientists often refer to the total number of protons and neutrons in the nucleus as the mass number ...
... are much more massive than electrons Scientists often refer to the total number of protons and neutrons in the nucleus as the mass number ...
100
... A compound is different from an element because it is 2 different elements combined. An element is the same all the way through. ...
... A compound is different from an element because it is 2 different elements combined. An element is the same all the way through. ...
Earth Materials
... -Diamond and graphite are both made of carbon (C), but why is one the hardest substance on Earth and the other very soft ? ...
... -Diamond and graphite are both made of carbon (C), but why is one the hardest substance on Earth and the other very soft ? ...
Chapter 4 Worksheet 1
... F. What all things are made of; it occupies space G. An uncharged particle within the nucleus of an atom H. Tiny negative electrical charges that move around the nucleus of an atom I. An atom that has lost or gained electrons ...
... F. What all things are made of; it occupies space G. An uncharged particle within the nucleus of an atom H. Tiny negative electrical charges that move around the nucleus of an atom I. An atom that has lost or gained electrons ...
Atomic Structure DEMOCRITUS JOHN DALTON
... __________ _________, similarities in their properties occur in a regular pattern. a) Atomic mass b) Atomic number c) Atomic radius Moseley created the modern periodic table when he determined that elements should be placed in order of increasing atomic number (# of protons). It’s a shame that WWI t ...
... __________ _________, similarities in their properties occur in a regular pattern. a) Atomic mass b) Atomic number c) Atomic radius Moseley created the modern periodic table when he determined that elements should be placed in order of increasing atomic number (# of protons). It’s a shame that WWI t ...
Atomic Theory
... All elements are made of tiny atoms. Atoms cannot be subdivided. Atoms of the same element are exactly alike. Atoms of different elements can join to form molecules. ...
... All elements are made of tiny atoms. Atoms cannot be subdivided. Atoms of the same element are exactly alike. Atoms of different elements can join to form molecules. ...
2011 Chem Facts Key
... 16. The Bohr Model of the atom placed electrons in “planet-like” orbits around the nucleus of an atom. 17. The current, wave-mechanical model of the atom has electrons in “clouds” (orbitals) around the nucleus. 18. Electrons can be excited to jump to higher energy levels. They emit energy as light ...
... 16. The Bohr Model of the atom placed electrons in “planet-like” orbits around the nucleus of an atom. 17. The current, wave-mechanical model of the atom has electrons in “clouds” (orbitals) around the nucleus. 18. Electrons can be excited to jump to higher energy levels. They emit energy as light ...
Unit 5 Notes
... Since a beta particle has less charge and much less mass than an alpha particle, beta particles are __________ _________________________ than alpha particles. ...
... Since a beta particle has less charge and much less mass than an alpha particle, beta particles are __________ _________________________ than alpha particles. ...
4 1 introduction to atoms 65-68
... 2. Circle the letter of each sentence that is part of John Dalton's atomic theory. a. All elements are composed of atoms. b. No two atoms of the same element are exactly alike. c. An atom of one element cannot be changed into an atom of a different element. d. Atoms cannot be created or destroyed in ...
... 2. Circle the letter of each sentence that is part of John Dalton's atomic theory. a. All elements are composed of atoms. b. No two atoms of the same element are exactly alike. c. An atom of one element cannot be changed into an atom of a different element. d. Atoms cannot be created or destroyed in ...
Atoms, Elements, and Ions
... • The atom is extremely small. One teaspoon of water has 3 times as many atoms as the Atlantic Ocean has teaspoons of water. • If a large sports stadium were an atom, a marble would represent the nucleus. ...
... • The atom is extremely small. One teaspoon of water has 3 times as many atoms as the Atlantic Ocean has teaspoons of water. • If a large sports stadium were an atom, a marble would represent the nucleus. ...
Test 2 Review - Chemistry
... called atoms. Atoms of the same element have the same properties. (mass, size, etc.) In a chemical reaction, matter cannot be created or destroyed – Law of Conservation of Mass ...
... called atoms. Atoms of the same element have the same properties. (mass, size, etc.) In a chemical reaction, matter cannot be created or destroyed – Law of Conservation of Mass ...
VIBRATIONS AND WAVES
... element (3) ____________________ have similar properties. The law of octaves did not work for all the known elements and was not generally (4) _____________________. ...
... element (3) ____________________ have similar properties. The law of octaves did not work for all the known elements and was not generally (4) _____________________. ...
Unit 4 PowerPoint
... • Dalton’s theory was of critical importance. He was able to support his ideas through experimentation, and his work revolutionized scientists’ concept of matter and its smallest building block, the atom. • Dalton’s theory has two flaws: – In point #2, this is not completely true. Isotopes of a giv ...
... • Dalton’s theory was of critical importance. He was able to support his ideas through experimentation, and his work revolutionized scientists’ concept of matter and its smallest building block, the atom. • Dalton’s theory has two flaws: – In point #2, this is not completely true. Isotopes of a giv ...
What do atoms look like?
... What do we know about atoms? *All elements are composed of atoms *The atoms of the same element are the same (and different from the atoms of any other element) *Atoms of different elements can mix together or can chemically combine in a whole number ratio to form compounds * Chemical reactions occ ...
... What do we know about atoms? *All elements are composed of atoms *The atoms of the same element are the same (and different from the atoms of any other element) *Atoms of different elements can mix together or can chemically combine in a whole number ratio to form compounds * Chemical reactions occ ...
Atomic Theory Class #5
... The Bohr Model, you should be able to explain how orbits are also energy levels, ground state, excited state, how to become excited, what happens when electrons return to the ground state, maximum number of electrons per orbital (think group 18), Spectra, spectra lines, uses for spectra, problems w ...
... The Bohr Model, you should be able to explain how orbits are also energy levels, ground state, excited state, how to become excited, what happens when electrons return to the ground state, maximum number of electrons per orbital (think group 18), Spectra, spectra lines, uses for spectra, problems w ...
L2 CHEMISTRY MIDTERM REVIEW Name KEY
... 51. Tell what each of the following scientists contributed to the atomic theory (give details of how they came up with their theories from experiments). Additionally, draw a picture or describe the atomic model that resulted from each person’s work: John Dalton – All elements are composed of submicr ...
... 51. Tell what each of the following scientists contributed to the atomic theory (give details of how they came up with their theories from experiments). Additionally, draw a picture or describe the atomic model that resulted from each person’s work: John Dalton – All elements are composed of submicr ...
isotopes and atomic mass
... 2. In all except step 11, the “Total” is calculated by adding the numbers across each row. Step 11 is an exception because it does not take into account the fact that there are different numbers of each isotope. Rather then add across, calculate this “Total” number in the same way you calculated the ...
... 2. In all except step 11, the “Total” is calculated by adding the numbers across each row. Step 11 is an exception because it does not take into account the fact that there are different numbers of each isotope. Rather then add across, calculate this “Total” number in the same way you calculated the ...
atom - SCHOOLinSITES
... electron A subatomic particle with a negative charge. Electrons circle the atom’s nucleus in regions of space known as orbitals. ...
... electron A subatomic particle with a negative charge. Electrons circle the atom’s nucleus in regions of space known as orbitals. ...
Representing Elements and Atoms
... Therefore, # protons must = # electrons since they have equal, but opposite charge ...
... Therefore, # protons must = # electrons since they have equal, but opposite charge ...
01 - cloudfront.net
... 2. All atoms of the same element contain the same number of neutrons. _______________________________________________________________ 3. Protons have no electrical charge. _______________________________________________________________ 4. The atomic number of an element is the number of protons and ...
... 2. All atoms of the same element contain the same number of neutrons. _______________________________________________________________ 3. Protons have no electrical charge. _______________________________________________________________ 4. The atomic number of an element is the number of protons and ...
2.1 The Nature of Matter Notes
... positively charged nucleus but remain outside the nucleus because of the energy of their motion. Energy level - e- have more energy the farther they are from the nucleus ...
... positively charged nucleus but remain outside the nucleus because of the energy of their motion. Energy level - e- have more energy the farther they are from the nucleus ...
NUCLEAR CHEMISTRY AND RADIOACTIVE DECAY
... 17. Sr-90 is a common waste product of nuclear fission reactors. How many half-lives of Sr-90 will pass after 144 years (half life = 28.8 yrs)? ...
... 17. Sr-90 is a common waste product of nuclear fission reactors. How many half-lives of Sr-90 will pass after 144 years (half life = 28.8 yrs)? ...