Physical Science Standards
... Physical Science is a course that explores the relationship between matter and energy. Students should learn Physical Science through the process of inquiry. Hands-on laboratory investigations, individual studies, and group activities should constitute a major portion of the learning experience. Usi ...
... Physical Science is a course that explores the relationship between matter and energy. Students should learn Physical Science through the process of inquiry. Hands-on laboratory investigations, individual studies, and group activities should constitute a major portion of the learning experience. Usi ...
Tro Ch 3 Lecture PP - Highline Community College
... • Atomic elements = elements whose particles are single atoms • Molecular elements = elements whose particles are multi-atom molecules • Molecular compounds = compounds whose particles are molecules made of only ...
... • Atomic elements = elements whose particles are single atoms • Molecular elements = elements whose particles are multi-atom molecules • Molecular compounds = compounds whose particles are molecules made of only ...
Chemistry (Revised)
... FeS(s) + 2HCl(aq) → FeCl2(aq) + H2S(g) (i) Hydrogen sulfide gas is very soluble in water. Draw a diagram to show an assembled apparatus that could be used to measure the volume of H2S gas produced when a sample of ...
... FeS(s) + 2HCl(aq) → FeCl2(aq) + H2S(g) (i) Hydrogen sulfide gas is very soluble in water. Draw a diagram to show an assembled apparatus that could be used to measure the volume of H2S gas produced when a sample of ...
CHAPTER 9 Notes
... c. When 2.50 g of K and 1.00 g Cl2 react together, the mass of KCl produced is _____2.10 g_______________, the limiting reactant is____Cl2____________, and the reactant in excess is _______K__________________. ...
... c. When 2.50 g of K and 1.00 g Cl2 react together, the mass of KCl produced is _____2.10 g_______________, the limiting reactant is____Cl2____________, and the reactant in excess is _______K__________________. ...
F:\Users\Steven\Documents\Chemistry\CHEM120\Problem Set
... When I went to write this problem I looked at the periodic table and saw that Rubidium had a mass of 85.467. Since the mass of all isotopes are even (or nearly so) and this average was uneven I knew immediately that rubidium had to have two major isotopes. When I looked up the isotopes sure enough t ...
... When I went to write this problem I looked at the periodic table and saw that Rubidium had a mass of 85.467. Since the mass of all isotopes are even (or nearly so) and this average was uneven I knew immediately that rubidium had to have two major isotopes. When I looked up the isotopes sure enough t ...
Module 1 Predictor Questions
... Pay special attention to the unit factors provided as they are what will be used in converting one unit to another. Note that each unit factor may be written in two equivalent ways. The one you use depends on what units you are trying to cancel in a dimensional analysis problem (see examples below). ...
... Pay special attention to the unit factors provided as they are what will be used in converting one unit to another. Note that each unit factor may be written in two equivalent ways. The one you use depends on what units you are trying to cancel in a dimensional analysis problem (see examples below). ...
Chapter 3 Stoichiometry
... 3.3 Stoichiometry and Chemical Reactions 3.4 Stoichiometry and Limiting Reactants 3.5 Chemical Analysis ...
... 3.3 Stoichiometry and Chemical Reactions 3.4 Stoichiometry and Limiting Reactants 3.5 Chemical Analysis ...
Organic and Bio-Molecular Chemistry
... linkages with different atoms. Therefore silicon and carbon, the two abundant tetravalent elements, are the most efficient scaffolds to build up tridimensional molecular structures. There is however an important difference between silicon and carbon: the energy of C-C linkage is around 80-90 kcal/mo ...
... linkages with different atoms. Therefore silicon and carbon, the two abundant tetravalent elements, are the most efficient scaffolds to build up tridimensional molecular structures. There is however an important difference between silicon and carbon: the energy of C-C linkage is around 80-90 kcal/mo ...
Mole Concept - Shailendra Kumar Chemistry
... (a) If the haemoglobin molecule contain one atom of iron. What is its molecular weight ? (b) If the haemoglobin molecule contains four atom of iron. What is its molecular weight ? ...
... (a) If the haemoglobin molecule contain one atom of iron. What is its molecular weight ? (b) If the haemoglobin molecule contains four atom of iron. What is its molecular weight ? ...
Stoichiometry of Formulas and Equations
... hemistry is a practical science. Just imagine how useful it could be to determine the formula of a compound from the masses of its elements or to predict the amounts of substances consumed and produced in a reaction. Suppose you are a polymer chemist preparing a new plastic: how much of this new mat ...
... hemistry is a practical science. Just imagine how useful it could be to determine the formula of a compound from the masses of its elements or to predict the amounts of substances consumed and produced in a reaction. Suppose you are a polymer chemist preparing a new plastic: how much of this new mat ...
Introduction to Chemistry
... 1. I can use atomic models to explain why theories may change over time. 2. I can identify the relative size, charge and position of protons, neutrons, and electrons in the atom. 3. I can find the number of protons, neutrons and electrons in a given isotope of an element if I am given a nuclear symb ...
... 1. I can use atomic models to explain why theories may change over time. 2. I can identify the relative size, charge and position of protons, neutrons, and electrons in the atom. 3. I can find the number of protons, neutrons and electrons in a given isotope of an element if I am given a nuclear symb ...
Non-ideal Plastic Behavior
... Scientists working in this area use their knowledge of food ingredients and processing operations to improve the properties of existing products or to develop new products. In practice, there is a great deal of overlap between basic research and product development, with the basic researchers provid ...
... Scientists working in this area use their knowledge of food ingredients and processing operations to improve the properties of existing products or to develop new products. In practice, there is a great deal of overlap between basic research and product development, with the basic researchers provid ...
Chapter 3: Chemical Compounds
... Some students completely ignore the charges when they look at formulas of ions; hence they see no difference between molecules and the ions with the same number and type of atoms, e.g., SO3 and SO3 2– or NO2 and NO2 – . It is important to point out that an ion’s formula is incomplete unless the prop ...
... Some students completely ignore the charges when they look at formulas of ions; hence they see no difference between molecules and the ions with the same number and type of atoms, e.g., SO3 and SO3 2– or NO2 and NO2 – . It is important to point out that an ion’s formula is incomplete unless the prop ...
Calculations and the Chemical Equation
... Atoms are exceedingly small, yet their masses have been experimentally determined for each of the elements. The periodic table provides atomic masses in atomic mass units (amu). A more practical unit for defining a "collection" of atoms is the mole, Avogadro's number of particles. Calculations based ...
... Atoms are exceedingly small, yet their masses have been experimentally determined for each of the elements. The periodic table provides atomic masses in atomic mass units (amu). A more practical unit for defining a "collection" of atoms is the mole, Avogadro's number of particles. Calculations based ...
Introduction to Inorganic Chemistry
... are very similar to those studied under organic chemistry (e.g. the silicon analogues of the hydrocarbons). It is best, therefore, to think of inorganic chemistry as the chemistry of all the elements, with organic chemistry as being a more detailed study of certain important aspects of one of them - ...
... are very similar to those studied under organic chemistry (e.g. the silicon analogues of the hydrocarbons). It is best, therefore, to think of inorganic chemistry as the chemistry of all the elements, with organic chemistry as being a more detailed study of certain important aspects of one of them - ...
U6B _13-14
... Shows the details of aqueous reactions that involve ions in aqueous solution Molecular Equation: the typical equation you are use to writing keeping all molecules together Complete Ionic Equation: shows all the particles in a solution as they really exist, as IONS or MOLECULES. Anything aqueous ne ...
... Shows the details of aqueous reactions that involve ions in aqueous solution Molecular Equation: the typical equation you are use to writing keeping all molecules together Complete Ionic Equation: shows all the particles in a solution as they really exist, as IONS or MOLECULES. Anything aqueous ne ...
Calculations from Balanced Equations
... Excess reactants You can use the relative numbers of moles of substances, as shown in balanced equations, to calculate the amounts of reactants needed or the amounts of products produced. A limiting reactant is the substance that is fully used up and thereby limits the possible extent of the reacti ...
... Excess reactants You can use the relative numbers of moles of substances, as shown in balanced equations, to calculate the amounts of reactants needed or the amounts of products produced. A limiting reactant is the substance that is fully used up and thereby limits the possible extent of the reacti ...
COMPOUNDS OF CARBON CONTAINING NITROGEN
... oxygen atom as a part of the functional group. Now, you will learn about organic compounds containing nitrogen atom as a part of the functional group. An historical importance can be associated with these compounds as the first ever organic compound synthesised in the laboratory was urea which conta ...
... oxygen atom as a part of the functional group. Now, you will learn about organic compounds containing nitrogen atom as a part of the functional group. An historical importance can be associated with these compounds as the first ever organic compound synthesised in the laboratory was urea which conta ...
Gas chromatography–mass spectrometry
Gas chromatography–mass spectrometry (GC-MS) is an analytical method that combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC-MS include drug detection, fire investigation, environmental analysis, explosives investigation, and identification of unknown samples. GC-MS can also be used in airport security to detect substances in luggage or on human beings. Additionally, it can identify trace elements in materials that were previously thought to have disintegrated beyond identification.GC-MS has been widely heralded as a ""gold standard"" for forensic substance identification because it is used to perform a specific test. A specific test positively identifies the actual presence of a particular substance in a given sample. A non-specific test merely indicates that a substance falls into a category of substances. Although a non-specific test could statistically suggest the identity of the substance, this could lead to false positive identification.