Chemistry – “I Can” Statements • • • • • • • • • • • • • • • • • • • • • • • • • • I can identify evidence that supports the assumption that matter in the universe has a common origin. I can recognize and understand that all matter on earth and in the universe is composed of the same elements. I can identify the distribution and abundance of elements in the universe. I can compare the occurrence of heavier elements on earth and in the universe I can identify the Dalton, Thomson, Rutherford, Bohr, and Quantum Mechanical models of the atom and the cite experimental evidence for each. I can identify the limitations of each model. I can identify and distinguish between subatomic particles based on relative charge, size, and location within the atom. I can relate the identity of an element to the number of protons within an atom. I can relate the mass and number of atoms in a mole to the molar mass and Avogadro's number. I can use the periodic table to find the number of protons, neutrons, and electrons in an atom. I can identify isotopes as atoms with the same number of protons but different numbers of neutrons. I can show similarities in chemical behaviors of elements within a group. I can identify the trends in atomic radius, ionization energy, electron affinity, and electronegativity in the periodic table. I can identify the properties of an element based on the position of the element on the periodic table (e.g. metal, nonmetal, and metalloid). I can differentiate between metals, nonmetals, and metalloids based on their properties. I can relate wavelength and color to light/photon energy using a diagram or graph. I can provide evidence from a lab that demonstrates how energy is released in discrete units when electrons move between energy levels. I can identify unknown elements by comparing their spectra to the spectra of known elements. I can describe radioactive particles and wavelike radiations as the result of an unstable nucleus. I can interpret graphical data relating to half life, time passed, and initial or final amounts of radioactive material. I can compare the mass, energy, and penetrating power of alpha, beta, and gamma radiation. I can relate the energy released in nuclear reactions to the strong nuclear force. I can recognize that nuclear reactions release much more energy than chemical reactions. I can identify benefits and risks of nuclear radiation for humans and other organisms. I can identify the number of valence electrons in an atom using the periodic table. I can relate the loss or gain of electrons to a positive or negative ionic charge. • • • • • • • • • • • • • • • • • • • • • • • I can use the periodic table to predict the charge an atom will have when it forms a stable ion. I can use the periodic table to predict which combinations of elements will form ionic, covalent or metallic bonds. I can compare ionic, covalent, and metallic bonds with respect to electron behavior and relative bond strengths. I can use a chemical formula to represent the names of elements and numbers of atoms in a compound. I can recognize that the formula for a compound is unique to that compound. I can compare the physical and chemical properties of a compound to those of the elements that form the compound. I can explain that when the same elements are combined in different proportions, different compounds form, and those compounds have different properties. I can use evidence from a lab to demonstrate the physical properties of ionic, covalent, and metallic substances. I can identify the shape and polarity of water, ammonia, and methane molecules, given a model. I can identify ways in which hydrogen bonds in water affect physical, chemical, and biological phenomena. I can describe evidence of chemical reactions such as the formation of a solid, the formation of a gas, a color change, or a spontaneous temperature change. I can recognize that the products of a chemical reaction have different physical and chemical properties than the reactants because they are different substances. I can describe a simple chemical reaction using a chemical equation. I can recognize that the number of atoms in a chemical reaction does not change, even though they are rearranged. I can find the molar proportions of the reactants and products in a balanced chemical equation. I can investigate chemical reactions that occur in my home, such as baking, rusting, and bleaching. I can identify evidence of the conservation of mass in a chemical reaction when given data about an experiment. I can use the molar relationships/proportions in a balanced chemical equation to find the mass of product formed in a chemical reaction that goes to completion (theoretical yield). I can recognize and communicate about evidence of energy changes in a chemical reaction. I can observe and measure temperature changes in a chemical reaction. I can classify reactions as endothermic or exothermic based on my observations. I can describe how electrical energy can be produced in a chemical reaction using an electrochemical cell. I can determine whether heat is lost or gained in a chemical reaction based on temperature data. • • • • • • • • • • • • • • • • • • • • • • • I can describe and define the terms: chemical reaction, reaction rate, concentration, and catalyst. I can design and conduct an experiment in which I examine the factors that affect reaction rate, namely temperature, particle size, concentration, and catalysts. I can analyze graphical data from experiments to determine how reaction rates vary based on those factors. I can describe how frequency of collisions and energy of collisions affect reaction rates. I can identify a catalyst within a reaction. I can determine the effect of catalysts is to increase the reaction rate. I can describe the concept of dynamic equilibrium. I can use LeChatelier’s principle to predict the effect of adding either a product or reactant to a reaction at equilibrium. I can use LeChatelier’s principle to predict the effect of a temperature change on a reaction at equilibrium, given a chemical equation showing the change in heat for the reaction. I can use the terms solute and solvent in describing a solution. I can appropriately represent particles as atoms, ions, molecules, or compounds. I can sketch a solution at the particle level. I can describe the relative amounts of solute particles qualitatively using the terms concentrated and dilute. I can describe the relative amounts of solute particles quantitatively in terms of molarity and molality. I can design and carry out an experiment to test factors such as agitation, particle size, and temperature that affect the relative rate of dissolution I can research environmental issues affected by concentrations of pollutants and use parts per million (ppm) to describe those pollutants. I can explain how a colligative property is related to the concentration of dissolved particles. I can identify colligative properties of a solution such as boiling point elevation and freezing point depression. I can measure the change in boiling and/or freezing point of a solvent when a solute is added by doing an experiment. I can give examples of how colligative properties affect everyday life, such as road salt and antifreeze. I can use the terms acidic, basic and neutral to describe solutions with a particular pH value or hydrogen ion concentration. I can use indicators to measure the pH of common household solutions and standard laboratory solutions. I can use my observations of indicators to determine whether a solution is acidic or basic. I can perform an acid-base titration in order to determine the concentration of an acid or base. • • I can describe the uses of acids and bases in industry, agriculture, medicine, mining, manufacturing and construction. I can describe the environmental impact of acids and bases in aquatic, atmospheric and soil environments.