Example of calculating average atomic mass
... 2. Atoms of one element cannot be converted into atoms of another element in a chemical reaction. Elements can only be converted into other elements in nuclear reactions. 3. All atoms of an element have the same number of protons and electrons, which determines the chemical behavior of the element. ...
... 2. Atoms of one element cannot be converted into atoms of another element in a chemical reaction. Elements can only be converted into other elements in nuclear reactions. 3. All atoms of an element have the same number of protons and electrons, which determines the chemical behavior of the element. ...
Midterm Review 4
... 35. How many oxygen atoms are in Al2(SO4)3? a. 3 atoms of O b. 4 atoms of O c. 7 atoms of O d. d. 12 atoms of O 36. The atomic mass of an element: a. depends on the number of isotopes of that element. b. depends on the mass of each isotope of that element. c. depends on the relative abundance of iso ...
... 35. How many oxygen atoms are in Al2(SO4)3? a. 3 atoms of O b. 4 atoms of O c. 7 atoms of O d. d. 12 atoms of O 36. The atomic mass of an element: a. depends on the number of isotopes of that element. b. depends on the mass of each isotope of that element. c. depends on the relative abundance of iso ...
Chapter 2 PowerPoint
... part of each atom’s valence shell – A molecule consists of two or more atoms held together by covalent bonds – A single covalent bond, or single bond, is the sharing of one pair of valence electrons – A double covalent bond, or double bond, is the sharing of two pairs of valence electrons Copyright ...
... part of each atom’s valence shell – A molecule consists of two or more atoms held together by covalent bonds – A single covalent bond, or single bond, is the sharing of one pair of valence electrons – A double covalent bond, or double bond, is the sharing of two pairs of valence electrons Copyright ...
Activity 6 Atoms with More than One Electron
... while they are able to recognize the patterns, they may not be able to articulate correctly how these patterns are related to the organization of the periodic table. In writing electron configurations, students often have difficulty remembering that the sublevels begin to overlap at higher energy le ...
... while they are able to recognize the patterns, they may not be able to articulate correctly how these patterns are related to the organization of the periodic table. In writing electron configurations, students often have difficulty remembering that the sublevels begin to overlap at higher energy le ...
ppt Sc10 Review Notes
... charges on the ions are the result of taking or giving eto go from formula to name: name of first ion, then brackets for charge if multivalent, then name for second ion i.e. first element ( ) second element-ide eg) AlCl3 = aluminum chloride ...
... charges on the ions are the result of taking or giving eto go from formula to name: name of first ion, then brackets for charge if multivalent, then name for second ion i.e. first element ( ) second element-ide eg) AlCl3 = aluminum chloride ...
History of the atomic theory (Howell)
... •All atoms of the same element are identical - in particular they have the same mass. •The atoms of one kind of element are different from the atoms of all other elements - in particular the atoms of one element have a different mass than those of other elements. •Atoms are indestructible and retain ...
... •All atoms of the same element are identical - in particular they have the same mass. •The atoms of one kind of element are different from the atoms of all other elements - in particular the atoms of one element have a different mass than those of other elements. •Atoms are indestructible and retain ...
Skill Sheet 19-B Chemical Formulas
... Have you ever heard of sodium nitrate? It’s a preservative used in foods like hot dogs. The chemical formula for sodium nitrate is NaNO3. How many types of atoms does this compound contain? You are right if you said three: sodium, nitrogen, and oxygen. The nitrogen and oxygen atoms have a shared-ele ...
... Have you ever heard of sodium nitrate? It’s a preservative used in foods like hot dogs. The chemical formula for sodium nitrate is NaNO3. How many types of atoms does this compound contain? You are right if you said three: sodium, nitrogen, and oxygen. The nitrogen and oxygen atoms have a shared-ele ...
Subatomic Particles
... The ancient Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided? a) Element b) Electron c) Atom d) Molecule Dalton’s theory (~1800; based on behavior of gasses) included all but one of the following points. Which is not from Dalton? a) All elements are com ...
... The ancient Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided? a) Element b) Electron c) Atom d) Molecule Dalton’s theory (~1800; based on behavior of gasses) included all but one of the following points. Which is not from Dalton? a) All elements are com ...
Chapter 4 Reviewing Content - Huber Heights City Schools
... protons = # electrons and #Neutrons = Mass number – Atomic Number ...
... protons = # electrons and #Neutrons = Mass number – Atomic Number ...
Chapter 23 (Section 3) Pregnancy, Birth, and
... *a. Extensions of PERIOD 6 (lanthanides) & PERIOD 7 (actinides) are below the periodic table *3. An element’s PROPERTIES can be predicted based on its LOCATION on the periodic table *a. to the right, left or bordering the ZIGZAG line indicates the “classification” of the ELEMENT as a METAL, NON-META ...
... *a. Extensions of PERIOD 6 (lanthanides) & PERIOD 7 (actinides) are below the periodic table *3. An element’s PROPERTIES can be predicted based on its LOCATION on the periodic table *a. to the right, left or bordering the ZIGZAG line indicates the “classification” of the ELEMENT as a METAL, NON-META ...
Study Guide (Semester 2)
... 2. How do reactions occur, and what part of the atom interacts? ______________________________________________________________________________ ______________________________________________________________________________ 3. Reactions between atoms involve only their __________________________. 4. D ...
... 2. How do reactions occur, and what part of the atom interacts? ______________________________________________________________________________ ______________________________________________________________________________ 3. Reactions between atoms involve only their __________________________. 4. D ...
Atoms, Elements, and Ions
... while in CO2,there are 2.66g of oxygen that combine with 1g carbon. ...
... while in CO2,there are 2.66g of oxygen that combine with 1g carbon. ...
Measuring and Calculating
... A period is likened to an energy level when completing energy level diagrams. Moving left to right, the attraction between the valence electrons and the nucleus increases, causing the atomic radius to decrease, and electronegativity and ionization energy to increase. ...
... A period is likened to an energy level when completing energy level diagrams. Moving left to right, the attraction between the valence electrons and the nucleus increases, causing the atomic radius to decrease, and electronegativity and ionization energy to increase. ...
Structure and Bonding
... Some elements achieve an octet configuration by gaining or losing electrons Ions form when an electron is gained or lost from a neutral atom Ions are charged because they have different numbers of protons and electrons Ions are held together by an electrostatic attraction, like in Na+ Cl-, forming a ...
... Some elements achieve an octet configuration by gaining or losing electrons Ions form when an electron is gained or lost from a neutral atom Ions are charged because they have different numbers of protons and electrons Ions are held together by an electrostatic attraction, like in Na+ Cl-, forming a ...
STAAR Science Tutorial 09 TEK 8.5A: Atomic Structure
... of an element with different number of neutrons are called isotopes of that element. Atoms of a particular element can thus have different atomic masses. ...
... of an element with different number of neutrons are called isotopes of that element. Atoms of a particular element can thus have different atomic masses. ...
File - Flipped Out Science with Mrs. Thomas!
... of an element with different number of neutrons are called isotopes of that element. Atoms of a particular element can thus have different atomic masses. ...
... of an element with different number of neutrons are called isotopes of that element. Atoms of a particular element can thus have different atomic masses. ...
Interactive Notebook 2 for 2011-2012
... (formerly referred to as Group VIIA). A few other groups are given family names. These include the alkali metals (Group 1), such as sodium and potassium, which are soft and white and extremely reactive chemically. Alkaline earth metals (Group 2), such as magnesium and calcium, are found in the secon ...
... (formerly referred to as Group VIIA). A few other groups are given family names. These include the alkali metals (Group 1), such as sodium and potassium, which are soft and white and extremely reactive chemically. Alkaline earth metals (Group 2), such as magnesium and calcium, are found in the secon ...
Name: Period:______ Date: CHEMISTRY Chapter 3 AND Nuclear
... 27. When chemical reactions take place atoms rearrange in whole number ratios. Atoms do not split in half ...
... 27. When chemical reactions take place atoms rearrange in whole number ratios. Atoms do not split in half ...
Chemical Equations
... the arrow) and the products (on the right of the arrow). C. The law of conservation of mass and energy must be satisfied. Therefore the same number of atoms of each element must appear on each side of a correct chemical equation. ...
... the arrow) and the products (on the right of the arrow). C. The law of conservation of mass and energy must be satisfied. Therefore the same number of atoms of each element must appear on each side of a correct chemical equation. ...
Chapter 4 Notes
... All atoms are neutral because they have the same number of protons and electrons. Ions, though, are atoms of an element where the # of P do not equal # of e- so therefore have an overall charge. Positive ions are called CATIONS Negative ions are called ANIONS You can determine the charge using the f ...
... All atoms are neutral because they have the same number of protons and electrons. Ions, though, are atoms of an element where the # of P do not equal # of e- so therefore have an overall charge. Positive ions are called CATIONS Negative ions are called ANIONS You can determine the charge using the f ...