APS Practice Final 2011
... a. one breaks down into at least two products. b. a compound is decomposed by an electric current. c. a compound burns in the presence of oxygen. d. a new, more complex compound is formed. ____ 78. Which of the following is an example of a decomposition reaction? a. photosynthesis b. digestion c. po ...
... a. one breaks down into at least two products. b. a compound is decomposed by an electric current. c. a compound burns in the presence of oxygen. d. a new, more complex compound is formed. ____ 78. Which of the following is an example of a decomposition reaction? a. photosynthesis b. digestion c. po ...
Lecture 2
... Hard acids or bases are small and non-polarizable Hard acids are cations with high positive charge (3+ or greater), or cations with d electrons not available for π-bonding Soft acids are cations with a moderate positive charge (2+ or lower), Or cations with d electrons readily availbale for π-bondin ...
... Hard acids or bases are small and non-polarizable Hard acids are cations with high positive charge (3+ or greater), or cations with d electrons not available for π-bonding Soft acids are cations with a moderate positive charge (2+ or lower), Or cations with d electrons readily availbale for π-bondin ...
Ch. 1-- Matter and Change
... The mass of all the reactants _________ equals the mass of all the products. number of each kind of atom is the same. The ___________ Sometimes it appears that the reactant and product masses are not gas was probably a reactant or product in the equal, but a _______ reaction, and that is making the ...
... The mass of all the reactants _________ equals the mass of all the products. number of each kind of atom is the same. The ___________ Sometimes it appears that the reactant and product masses are not gas was probably a reactant or product in the equal, but a _______ reaction, and that is making the ...
finished 2.3 notes - Mr Schmitt
... To determine the number of electrons in an ion you need to subtract the ion charge from the atomic number ◦ EX: Calcium ion has an atomic number of 20 and a +2 ion charge.......so, its ion has 20 - 2 = 18 electrons ◦ EX: Fluorine ion has an atomic number of 9 and a -1 ion charge.......so, its ion ...
... To determine the number of electrons in an ion you need to subtract the ion charge from the atomic number ◦ EX: Calcium ion has an atomic number of 20 and a +2 ion charge.......so, its ion has 20 - 2 = 18 electrons ◦ EX: Fluorine ion has an atomic number of 9 and a -1 ion charge.......so, its ion ...
Chem Ch. 4.3
... • The atomic mass of an element is the weighted average mass of the isotopes of that element. • Atomic mass, therefore, takes into account the percent abundance of each isotope as well as the mass of an atom of that isotope. • The isotope in greater abundance will have a greater effect on determinin ...
... • The atomic mass of an element is the weighted average mass of the isotopes of that element. • Atomic mass, therefore, takes into account the percent abundance of each isotope as well as the mass of an atom of that isotope. • The isotope in greater abundance will have a greater effect on determinin ...
BACKGROUND Knowledge of the atom is something that belongs to
... be subdivided). He added that in between atoms are empty spaces. Democritus believed that atoms are always moving and comes in different shapes and sizes. His theory states that all matter is made up of atoms and they are invisible. He stated that atoms are homogenous, atoms are solid, atoms cannot ...
... be subdivided). He added that in between atoms are empty spaces. Democritus believed that atoms are always moving and comes in different shapes and sizes. His theory states that all matter is made up of atoms and they are invisible. He stated that atoms are homogenous, atoms are solid, atoms cannot ...
Review_WB_1
... 1. Arrange the Group I metals in order of reactivity from most reactive to least reactive. ______________________________________________________________________ 2. Is the same trend seen in the Alkaline Earth Metals, which was more reactive Ca or Sr? ________________________________________________ ...
... 1. Arrange the Group I metals in order of reactivity from most reactive to least reactive. ______________________________________________________________________ 2. Is the same trend seen in the Alkaline Earth Metals, which was more reactive Ca or Sr? ________________________________________________ ...
CHEMISTRY OF MAIN GROUP ELEMENTS Classification -1 s
... Oxidation state = M2+ ,Be2+,Mg2+ ,Ca2+ ,Ba2+ ,Sr2+ Except Be- all other members are strong reducing agents that is obvious from their standard reduction potentials. The reducing character increases down the group. Due to their higher ionisation potential they are less reducing than group 1 elements. ...
... Oxidation state = M2+ ,Be2+,Mg2+ ,Ca2+ ,Ba2+ ,Sr2+ Except Be- all other members are strong reducing agents that is obvious from their standard reduction potentials. The reducing character increases down the group. Due to their higher ionisation potential they are less reducing than group 1 elements. ...
making models of atoms - Mater Academy Charter Middle/ High
... although some have more and some have less. Atoms of the same type of matter that have different numbers of neutrons are called isotopes. Most types of matter have isotopes. ...
... although some have more and some have less. Atoms of the same type of matter that have different numbers of neutrons are called isotopes. Most types of matter have isotopes. ...
Topic 3 Note Outline
... numbers that are not integers. • For example, the atomic mass of Cl is often quoted on periodic tables as 35.5, and may be represented thus, 35.5Cl17. This does not mean that there are 17 protons, 17 electrons and 18.5 neutrons in an atom of chlorine. It is not possible to have a fraction of a neutr ...
... numbers that are not integers. • For example, the atomic mass of Cl is often quoted on periodic tables as 35.5, and may be represented thus, 35.5Cl17. This does not mean that there are 17 protons, 17 electrons and 18.5 neutrons in an atom of chlorine. It is not possible to have a fraction of a neutr ...
Unit 2: Chemical Reactions
... • A chemical formula is an abbreviation for a chemical compound using chemical symbols and numbers. • The subscript number tells how many atoms of the element are present in the compound • Example: CO2 = Carbon Dioxide – Di = 2 – 1 Carbon atom and 2 oxygen atoms ...
... • A chemical formula is an abbreviation for a chemical compound using chemical symbols and numbers. • The subscript number tells how many atoms of the element are present in the compound • Example: CO2 = Carbon Dioxide – Di = 2 – 1 Carbon atom and 2 oxygen atoms ...
Discussion 9, Mahaffy et al., Chapter 15
... Assigning Oxidation numbers c. Oxidation number is 0 for atoms in an element. d.The sum of all oxidation numbers in a molecule or ion must add up to the total charge. e. In compounds, alkalis (group 1) have oxidation number +1; alkaline earths (group 2) have oxidation number +2. f. In compounds, flu ...
... Assigning Oxidation numbers c. Oxidation number is 0 for atoms in an element. d.The sum of all oxidation numbers in a molecule or ion must add up to the total charge. e. In compounds, alkalis (group 1) have oxidation number +1; alkaline earths (group 2) have oxidation number +2. f. In compounds, flu ...
Atomic Structure
... Below you will practice figuring out the different protons, electrons, and neutrons for the table. I have left some open to help you out, but once you have an answer click on the cell shade to reveal the answers. If you need the periodic table click on the animal below to go to the periodic table. ...
... Below you will practice figuring out the different protons, electrons, and neutrons for the table. I have left some open to help you out, but once you have an answer click on the cell shade to reveal the answers. If you need the periodic table click on the animal below to go to the periodic table. ...
Here are the answers and work for your summer packet.
... b. A colorless, crystalline solid is decomposed, yielding a pale yellow-green gas and a soft, shiny metal. c. A cup of tea becomes sweeter as sugar is added to it. a. physical, mixture b. chemical, compound c. physical, mixture CHAPTER 2 1. Describe Dalton’s atomic theory. All matter is made up of a ...
... b. A colorless, crystalline solid is decomposed, yielding a pale yellow-green gas and a soft, shiny metal. c. A cup of tea becomes sweeter as sugar is added to it. a. physical, mixture b. chemical, compound c. physical, mixture CHAPTER 2 1. Describe Dalton’s atomic theory. All matter is made up of a ...
8th Grade Ch. 7 Chemical Reactions Study guide
... ____ 31. Each substance written to the right of the arrow in a chemical equation is a ____. A. reactant B. product C. precipitate D. catalyst ____ 32. According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants? A. There ...
... ____ 31. Each substance written to the right of the arrow in a chemical equation is a ____. A. reactant B. product C. precipitate D. catalyst ____ 32. According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants? A. There ...
AP Chemistry Summer Packet ANSWERS
... b. A colorless, crystalline solid is decomposed, yielding a pale yellow-green gas and a soft, shiny metal. c. A cup of tea becomes sweeter as sugar is added to it. a. physical, mixture b. chemical, compound c. physical, mixture CHAPTER 2 1. Describe Dalton’s atomic theory. All matter is made up of a ...
... b. A colorless, crystalline solid is decomposed, yielding a pale yellow-green gas and a soft, shiny metal. c. A cup of tea becomes sweeter as sugar is added to it. a. physical, mixture b. chemical, compound c. physical, mixture CHAPTER 2 1. Describe Dalton’s atomic theory. All matter is made up of a ...
Chapter 1 - Atomic Structure
... We have already learned that atoms are composed of three particles: protons, neutrons and electrons. The central nucleus of the atom contains the neutrons and positively charged protons. The nucleus is surrounded by as many orbital electrons (each with a charge of –1) as there are protons (each with ...
... We have already learned that atoms are composed of three particles: protons, neutrons and electrons. The central nucleus of the atom contains the neutrons and positively charged protons. The nucleus is surrounded by as many orbital electrons (each with a charge of –1) as there are protons (each with ...
Investigating Atoms and Atomic Theory
... move in definite orbits around the nucleus, much like planets circle the sun. These orbits, or energy levels, are located at ...
... move in definite orbits around the nucleus, much like planets circle the sun. These orbits, or energy levels, are located at ...