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Notes Unit 5-4
... • 602,200,000,000,000,000,000,000 unpopped popcorn kernels and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles. • If we were able to count atoms at the rate of 10 million per second, it would take about 2 billion years to count the ...
... • 602,200,000,000,000,000,000,000 unpopped popcorn kernels and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles. • If we were able to count atoms at the rate of 10 million per second, it would take about 2 billion years to count the ...
Chemistry - Napa Valley College
... Runoff from agricultural land may have high levels of some elements such as selenium. Plants can take up selenium and convert it to gas, removing it from the water. We can use these plants to remove selenium = ...
... Runoff from agricultural land may have high levels of some elements such as selenium. Plants can take up selenium and convert it to gas, removing it from the water. We can use these plants to remove selenium = ...
Unit 13 - Electrochemistry
... Electrode: A conductor used to establish electrical contact with a nonmetallic part of a circuit, such as an electrolyte. electrochemical cell: A system that contains two electrodes ...
... Electrode: A conductor used to establish electrical contact with a nonmetallic part of a circuit, such as an electrolyte. electrochemical cell: A system that contains two electrodes ...
Partial Pressures of Gases
... Steps for Balancing Chemical Equations by Inspection 1. Write the chemical formula for each reactant and product, including the state of matter for each one. 2. Try balancing any atom that is not in a polyatomic ion and is not carbon, oxygen or hydrogen.(ECHO) 3. If possible, balance polyatomic ions ...
... Steps for Balancing Chemical Equations by Inspection 1. Write the chemical formula for each reactant and product, including the state of matter for each one. 2. Try balancing any atom that is not in a polyatomic ion and is not carbon, oxygen or hydrogen.(ECHO) 3. If possible, balance polyatomic ions ...
An element is a fundamental substance that cannot be chemically
... Heterogeneous: the mixing is not uniform, the mixture has regions of different composition Molecule: the unit of matter that results when two or more atoms are joined by covalent bonds ...
... Heterogeneous: the mixing is not uniform, the mixture has regions of different composition Molecule: the unit of matter that results when two or more atoms are joined by covalent bonds ...
9.1-10.5 Organic Chemistry
... branch of the same type, a locating number is given to each branch and a prefix indicating the number of that type of branch is attached to the name. This numbering prefix does not affect the alphabetical order of the branches Draw the structural formula for 3,4-dimethylhexane ...
... branch of the same type, a locating number is given to each branch and a prefix indicating the number of that type of branch is attached to the name. This numbering prefix does not affect the alphabetical order of the branches Draw the structural formula for 3,4-dimethylhexane ...
H 2 O
... – For example, when Na loses an electron it becomes Na+. • Positively charged ions are called cations. • When an atom or molecule gains electrons, it becomes negatively charged. • For example when Cl gains an electron it becomes Cl-. • Negatively charged ions are called anions. • An atom or molecule ...
... – For example, when Na loses an electron it becomes Na+. • Positively charged ions are called cations. • When an atom or molecule gains electrons, it becomes negatively charged. • For example when Cl gains an electron it becomes Cl-. • Negatively charged ions are called anions. • An atom or molecule ...
1. I can define valence electron and use the periodic
... 14. An uneven number of _________ and _________ causes ions to form. 15. Determine the ions that will form for each of the elements listed in #4 (a-j). Explain how the ion forms. (Example: Hydrogen loses one valence electron, its ion is H+). #5. I can describe the differences between a covalent bond ...
... 14. An uneven number of _________ and _________ causes ions to form. 15. Determine the ions that will form for each of the elements listed in #4 (a-j). Explain how the ion forms. (Example: Hydrogen loses one valence electron, its ion is H+). #5. I can describe the differences between a covalent bond ...
standard sample test
... If there is a limiting reagent, there is also a substance in excess. The limiting reagent controls the reaction. If the limiting reagent is a gas, then it does not control the reaction. The mass of all the products depend on the mass of the limiting reagent. ...
... If there is a limiting reagent, there is also a substance in excess. The limiting reagent controls the reaction. If the limiting reagent is a gas, then it does not control the reaction. The mass of all the products depend on the mass of the limiting reagent. ...
power point notes
... Rutherford proposed that the atom consists of a tiny positively charged nucleus surrounded by a cloud of negatively charged electrons. The nucleus contains almost all of the mass of the atom and consists of protons and neutrons. The number of electrons surrounding the nucleus, equals the number of p ...
... Rutherford proposed that the atom consists of a tiny positively charged nucleus surrounded by a cloud of negatively charged electrons. The nucleus contains almost all of the mass of the atom and consists of protons and neutrons. The number of electrons surrounding the nucleus, equals the number of p ...
Chemical Equations and Reactions
... • the more an element reacts with other substances, the greater the activity is. • Metals: the greater the activity, the greater it loses electrons (to form cations) • Non-metals: the greater the activity, the greater it gains electrons (to form anions) • Activity series: a list of which elements a ...
... • the more an element reacts with other substances, the greater the activity is. • Metals: the greater the activity, the greater it loses electrons (to form cations) • Non-metals: the greater the activity, the greater it gains electrons (to form anions) • Activity series: a list of which elements a ...
Day 5 Intro-to-Chem
... oxide reacts with water to form sodium hydroxide (NaOH). If you evaporate the water, you will have solid NaOH not Na2O. S Sodium oxide has different chemical properties compared to salt, and so it reacts differently. S We write the reaction as ...
... oxide reacts with water to form sodium hydroxide (NaOH). If you evaporate the water, you will have solid NaOH not Na2O. S Sodium oxide has different chemical properties compared to salt, and so it reacts differently. S We write the reaction as ...
gr11chemreview
... 12. Explain why polar molecules have higher boiling and melting points than non polar molecules. ...
... 12. Explain why polar molecules have higher boiling and melting points than non polar molecules. ...
Chapter 23 (Section 3) Pregnancy, Birth, and Childhood (Pages 735
... *f. The chemical symbol of an ELEMENT is a shorthand form of the element’s NAME *1. The chemical SYMBOL always BEGINS with a CAPITAL letter, with any other letter(s) written in their LOWER-CASE form *a. (e.g.) sulfur [S]; iodine [I]; fluorine [F]; helium [He]; gallium [Ga] *2. Some elements’ CHEMI ...
... *f. The chemical symbol of an ELEMENT is a shorthand form of the element’s NAME *1. The chemical SYMBOL always BEGINS with a CAPITAL letter, with any other letter(s) written in their LOWER-CASE form *a. (e.g.) sulfur [S]; iodine [I]; fluorine [F]; helium [He]; gallium [Ga] *2. Some elements’ CHEMI ...
Chemistry I Honors – Semester Exam Review – Fall 2000
... STRATEGY: Start by reading through your notes to refresh your memory on these topics. Then, use this review sheet as a starting point to identify the areas on which you need to spend more study time. For those areas, go back to homework assignments, quizzes, and reviews to practice more problems. I ...
... STRATEGY: Start by reading through your notes to refresh your memory on these topics. Then, use this review sheet as a starting point to identify the areas on which you need to spend more study time. For those areas, go back to homework assignments, quizzes, and reviews to practice more problems. I ...
Chapter 2
... Unequal sharing by atoms with different electronattracting abilities produces polar molecules H2O Atoms with six or seven valence shell electrons are electronegative, e.g., oxygen Atoms with one or two valence shell electrons are electropositive, e.g., sodium ...
... Unequal sharing by atoms with different electronattracting abilities produces polar molecules H2O Atoms with six or seven valence shell electrons are electronegative, e.g., oxygen Atoms with one or two valence shell electrons are electropositive, e.g., sodium ...
7.3 GUIDE TO FINDING FORMULA MASS/MOLAR MASS OF A
... To convert moles to number of atoms/molecules: Moles given x 6.022 x 1023 = number of atoms/molecules EXAMPLES (show all your work so you can use it as a guide later!): ...
... To convert moles to number of atoms/molecules: Moles given x 6.022 x 1023 = number of atoms/molecules EXAMPLES (show all your work so you can use it as a guide later!): ...
AP Chapter Five Outline
... A. Oxidation Numbers and Redox Reactions Oxidation numbers compare the charge of an uncombined atom with its actual charge in a compound. All neutral atoms have an equal number of protons and electrons and thus have no net charge. Oxidation numbers of atoms in molecular compound are assigned as ...
... A. Oxidation Numbers and Redox Reactions Oxidation numbers compare the charge of an uncombined atom with its actual charge in a compound. All neutral atoms have an equal number of protons and electrons and thus have no net charge. Oxidation numbers of atoms in molecular compound are assigned as ...
Electrons - biospaces
... • The periodic table of the elements shows the electron distribution for each element ...
... • The periodic table of the elements shows the electron distribution for each element ...
Type of Bonding
... • charge-nonpolar (induced or instantaneous dipole) • dipole-nonpolar (induced dipole) ...
... • charge-nonpolar (induced or instantaneous dipole) • dipole-nonpolar (induced dipole) ...
practice exercise
... ionic compounds, it is important to recognize polyatomic ions and to determine the charge of cations with variable charge. (a) The cation in this compound is K+ and the anion is SO42–. (If you thought the compound contained S2– and O2– ions, you failed to recognize the polyatomic sulfate ion.) Putti ...
... ionic compounds, it is important to recognize polyatomic ions and to determine the charge of cations with variable charge. (a) The cation in this compound is K+ and the anion is SO42–. (If you thought the compound contained S2– and O2– ions, you failed to recognize the polyatomic sulfate ion.) Putti ...
Introduction to Stoichiometry
... What is the mass of 6 moles of CH2O? How many ions are in 0.25 moles of Cu+2? How many moles are 8.25 x 1028 molecules of Na2CO3? How many formula units are in 6.34 g of NaCl? How many grams are in 3.4 x 1024 molecules of ...
... What is the mass of 6 moles of CH2O? How many ions are in 0.25 moles of Cu+2? How many moles are 8.25 x 1028 molecules of Na2CO3? How many formula units are in 6.34 g of NaCl? How many grams are in 3.4 x 1024 molecules of ...
Semester Exam Review - Teach-n-Learn-Chem
... STRATEGY: Start by reading through your notes to refresh your memory on these topics. Then, use this review sheet as a starting point to identify the areas on which you need to spend more study time. For those areas, go back to homework assignments, quizzes, and reviews to practice more problems. I ...
... STRATEGY: Start by reading through your notes to refresh your memory on these topics. Then, use this review sheet as a starting point to identify the areas on which you need to spend more study time. For those areas, go back to homework assignments, quizzes, and reviews to practice more problems. I ...