200 Things to Know to Pass the Chemistry Exam 1. Protons are positively charged (+) with a mass of 1 amu. Example: Which has the greatest nuclear charge? Cl-35 Ar-40 K-39 Ca-40 2. Neutrons have no charge and a mass of 1 amu. 3. Electrons are small and are negatively charged (-) with a mass of almost 0 amu.. 4. Protons & neutrons are in an atom’s nucleus (nucleons). Which has the greatest number of nucleons? Sn-119 Sb-122 Te-128 I-127 5. Electrons are found in “clouds”
Premium Chemistry Education Acid
CHEMISTRY 110 GENERAL CHEMISTRY I INFORMATION SHEET Fall 2011 Instructors: Professor Ashok Kakkar Otto Maass Chemistry Building‚ room 313 Tel: (514) 398-6912 Office hours: By appointment‚ e-mail via WebCT to arrange meetings. E-mail: use webCT Professor Scott Bohle Otto Maass Chemistry Building‚ room 233A Tel: (514) 398-7409 Office hours: By appointment‚ e-mail via WebCT to arrange meetings E-mail: use webCT Professor Bryan Sanctuary Otto Maass Chemistry Building‚ room 224 Tel: (514) 398-6930
Premium Chemistry Covalent bond Final examination
four different R groups that an amino acid can be classified as: nonpolar‚ uncharged polar covalent‚ negatively charged polar covalent‚ and positively charged polar covalent groups. The R groups of the amino acids dictate protein folding. Based on the classification of each amino acid R group‚ four different types interactions with the R groups of other amino acids occur‚ hydrogen bonds‚ disulfide linkages‚ ionic interactions‚ and nonpolar associations to create the tertiary structure or three-dimensional
Premium Enzyme Starch Amylase
describe the functions and why they are important in our bodies. Proteins Proteins are polymers of amino acids that are joined head-to-tail in a long chain that is then folded into a three-dimensional structure unique to each type of protein. The covalent linkage between two adjacent amino acids in a protein (or polypeptide) chain is called a peptide bond. There are twenty amino acids that make up proteins. Each amino acid has a typical generic structure as depicted in the diagram 1‚ the only variance
Premium Protein Amino acid DNA
particles surrounding the center are called Electrons (3^H)‚ an isomer‚ differs from (1^H) in that: 3^H has 2 more neutrons than 1^H Nitrogen has 7 electrons and thus can form a maximum of ___ covalent bonds with other elements 3 Carbon has 6 electrons while hydrogen has 1 electron. How many covalent bonds can form between a carbon atom and hydrogen atoms 4 In the lab you are culturing human cells in order for the cells to survive they must be cultured in a solution containing 25 mM glucose
Free Atom Electron Hydrogen
Cl2− | | | | | * Question 6 10 out of 10 points | | | How many O atoms are there in 51.4 g CaSO4?Answer | | | | | Selected Answer: | 9.09 × 1023 | | | | | * Question 7 10 out of 10 points | | | How many covalent bonds will a nitrogen atom usually form?Answer | | | | | Selected Answer: | 3 | | | | | * Question 8 10 out of 10 points | | | How many grams of Cl2 can be prepared from the reaction of 16.0 g of MnO2 and 30.0 g of HCl
Premium Covalent bond Chemical bond Atom
hydrogen bonding occurs between the hydrogen and an oxygen atom in the same molecule. an oxygen atom in a different molecule. a hydrogen atom in a different molecule. a hydrogen atom in the same molecule. Question 9 of 20 Covalent bonds form when one atom _________ its _________ with another atom. gives up; electrons shares; protons gives up; neutrons shares; electrons Question 10 of 20 Water is an important solvent of life because it forms covalent bonds.
Premium Atom Hydrogen Oxygen
1. What is Chemistry? The study of the composition‚ structure‚ and properties of matter. The processes that matter undergoes and the energy changes that accompany these processes. 2. What is the formula for density? If I give you the density of a substance and the volume‚ you should be able to tell me the mass… Density = Mass/Volume 3. Compare and contrast intensive and extensive properties. Give an example of each. Extensive properties depend on the amount of matter that is present. Such
Premium Atom Chemistry Chemical element
types of chemical bonds and give an example of each. The three types of chemical bonds are ionic‚ covalent‚ and hydrogen. An ionic bond is formed between atoms with opposite’s electrical charges. When an atom loses electrons it has a positive charge‚ and it is called and cation. When an atom gains an electron it has a negative charge‚ and it is called an anion. An example of an ionic bond is sodium chloride or table salt. The sodium atom has one electron in its outer shell which is easily
Premium Atom Protein DNA
REVIEW a. I‚. • • C • • c. • C 3. The effective nuclear charge is a. equal to the suns of the charges of the protons in the nucleus b. equal to the suns of the charges of the protons in the nucleus minus the sum of the electrons in the Outer shell c. lest than tire sum of the charges of the protons in the nucleus due to shielding by the electrons in the outer shell d. lest than the sum of the charges of the protons in tire nucleus due to nisielding by the
Free Atom Periodic table Chemical element