IPC Review Material a d b b a b d b a d b d a d c b c a a d c c c b b a d a d c a j a g g c h d j a b c j j d j h h What is an element? • Basically, if it is listed anywhere on the periodic table (of the elements) it is an element. • If it is on the left side it is a metal element, if it is on the right side it is a NONmetal element. (Hydrogen is the ONLY nonmetal to the left of the stairstep line.) • Let’s look . . . Where are the metal elements? Left of the Stair-step line! Where are the nonmetals? To the Right of the stair step line, and Hydrogen! Where are the metalloids? Along the stair step line. These elements have properties of both metals and nonmetals. The center elements on the table are called the transition metals. Many of them have more than 1 way they will give away electrons, so they change, or transition, ion charges. The charge these metals use are given by a roman numeral in the name. (Iron (II) chloride) The Rare Earth Metals are radioactive and form the bottom 2 rows, also called the Lanthanide and Actinide Series. So, I can tell if it’s a metal or not, what else? • Each column on the table is a group or family of elements that have similar chemical properties. • They form the same types of compounds, in the same ratio. • They have the SAME NUMBER OF OUTER SHELL (valence) electrons. • Lets look . . . Group # 18 is the family called Noble Gases – each one has 8 outer shell electrons (full shell) so they don’t form compounds. Group #1 is called the Alkalai metals, they have 1 valence electron, and will form +1 ions. The are Alkalai because they form the strongest (highest pH) bases. Group #2 is called the Alkalai Earth Metals and they have 2 valence electrons, which they will give away to form +2 ions. Group #17 are the Halogens, they all have 7 electrons in their valence shell, and want to have 1 more when they form compounds. They all become -1 ions when they can. For each group, they form compounds the same way, for example. . . • Beryllium forms a compound with Cl in the ratio of 1:2 or BeCl2 • Since Mg and Ca are in the same family or group, they will form the same type of compounds in the same ratio. • MgCl2 and CaCl2 • This is what is meant when they have “similar chemical properties” Each square also tells us information about each element. • The 1 or 2 letters that represent the element are its symbol. • The number at the top of the square is the atomic number. • The numbers at the bottom of the square is the average atomic mass. • have no definite shape and no definite volume. Particles flow easily; they spread far apart and fill up the space of a container Gases • have no definite shape and no definite volume. Particles flow easily; they spread far apart and fill up the space of a container • is a high-temperature, high-energy, neutral gas consisting of positively and negatively charged particles Plasma • is a high-temperature, high-energy, neutral gas consisting of positively and negatively charged particles • have a definite volume but do not have a definite shape Liquids • have a definite volume but do not have a definite shape • is an increase in the size of a substance when the temperature is increased. Thermal expansion • is an increase in the size of a substance when the temperature is increased. • the total energy of a material’s particles, including kinetic and potential energy Thermal Energy: • the total energy of a material’s particles, including kinetic and potential energy • (-273.15°C or zero Kelvin): particle motion is so slow that thermal energy is equal to zero. Absolute zero • (-273.15°C or zero Kelvin): particle motion is so slow that thermal energy is equal to zero. • temperature at which a solid changes to a liquid Melting point: • temperature at which a solid changes to a liquid • energy lost during freezing or the energy required for melting Heat of fusion • energy lost during freezing or the energy required for melting • the change of a substance from a liquid to a gas; particles in a liquid absorb heat energy vaporization • the change of a substance from a liquid to a gas; particles in a liquid absorb heat energy • vaporization that occurs a the surface Evaporation • vaporization that occurs a the surface • the amount of energy lost when gas condenses into a liquid or the amount of energy required for the liquid at its boiling point to become a gas. Heat of Vaporization: • the amount of energy lost when gas condenses into a liquid or the amount of energy required for the liquid at its boiling point to become a gas. • a change of a gas to a liquid; gas loses heat energy. Condensation • a change of a gas to a liquid; gas loses heat energy. • the change of a solid directly to a gas without going through the liquid phase; solid absorbs heat. Sublimation • the change of a solid directly to a gas without going through the liquid phase; solid absorbs heat. • Two or more types of atoms, physically combined in no definite ratio. Heterogeneous Mixture • Two or more types of atoms, physically combined in no definite ratio. • heterogeneous mixture; large particles. Ex. Snow globes, muddy water Suspension • heterogeneous mixture; large particles. Ex. Snow globes, muddy water • heterogeneous mixture; small particles. Ex. Milk, butter, salad dressing Colloid • heterogeneous mixture; small particles. Ex. Milk, butter, salad dressing • homogeneous mixture; particles have dissolved. Ex. Saline, Kool Aid, Sweet tea Solution • homogeneous mixture; particles have dissolved. Ex. Saline, Kool Aid, Sweet tea • Describe the physical attributes of matter. • Examples: color, shape, size, texture, density, temperature, state or phase, smell, taste, boiling/melting/freezing points, magnetic attraction, solubility Physical Properties • Describe the physical attributes of matter. • Examples: color, shape, size, texture, density, temperature, state or phase, smell, taste, boiling/melting/freezing points, magnetic attraction, solubility • Describes the way a sample of matter reacts in the presence of other matter. • Examples: Oxidation, Corrosion, Hydrolysis, • Combustion, Flammability, Reaction to Acid • or Base Chemical Properties • Describes the way a sample of matter reacts in the presence of other matter. • Examples: Oxidation, Corrosion, Hydrolysis, • Combustion, Flammability, Reaction to Acid • or Base • A change in the chemical composition of a sample of matter. • • Always produces a new substance with new properties. Chemical Change • A change in the chemical composition of a sample of matter. • • Always produces a new substance with new properties. • is a measure of how tightly packed the atoms of a substance are. Density • is a measure of how tightly packed the atoms of a substance are. • is the force of a liquid or gas pushing up on an • object that is immersed in it (put into it). Buoyancy • is the force of a liquid or gas pushing up on an • object that is immersed in it (put into it). • A measure of how easily a solid will • shatter. Brittleness • A measure of how easily a solid will • shatter. Malleability • measures a solid’s ability to be pounded into thin sheets • ◦It states that "any body partially or completely submerged in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the body." Archimede‘s principle • ◦It states that "any body partially or completely submerged in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the body." • states that the volume of a fixed mass of gas varies inversely with the pressure at constant temperature. Boyle’s Law • states that the volume of a fixed mass of gas varies inversely with the pressure at constant temperature. • When the temperature increases, the volume of a fixed number of gas molecules must increase if the pressure is to stay constant. Charles's Law • When the temperature increases, the volume of a fixed number of gas molecules must increase if the pressure is to stay constant. • a type of mixture that never settles; its particles are usually large • but will NOT settle when allowed to stand Colloid • a type of mixture that never settles; its particles are usually large • but will NOT settle when allowed to stand • the scattering of light by colloid particles Tyndall Effect • the scattering of light by colloid particles • a mixture that appears to be the same • throughout; particles that make-up the mixture are very small and not • visible; particles do not settle when mixture is allowed to stand. Homogeneous mixture • a mixture that appears to be the same • throughout; particles that make-up the mixture are very small and not • visible; particles do not settle when mixture is allowed to stand. • solution that contains all the solute it can hold at a given temperature Saturated Solution: • solution that contains all the solute it can hold at a given temperature • a measure of how much of a solute can be dissolved in a given amount of solvent at a specific temperature Solubility • a measure of how much of a solute can be dissolved in a given amount of solvent at a specific temperature IPC Review • Aristotle believed that matter was • a. composed of atoms • b. composed of molecules • c. capable of being broken down into smaller parts • d. uniform throughout d • Aristotle believed that matter was • a. composed of atoms • b. composed of molecules • c. capable of being broken down into smaller parts • d. uniform throughout • Atoms consist of positively charged center called a (n) ___. • a. proton b. nucleus • c. neutron d. electron 100 dollar question What Is a Mixture? A mixture is a substance made by mixing materials physically. 200 dollar question Mixtures are not chemically combined and do not undergo any sort of chemical reaction. TRUE OR FALSE ? TRUE (: 300 dollar question Anything you can combine is a _____ ? Anything you can combine is a mixture. 400 dollar question What is one example of a heterogeneous mixture ? salad, because everything is mixed into one. 100 dollar question The gases form a type of mixture called a _______ ? The gases form a type of mixture called a solution 200 dollar question A solution is made up of one or more different substances combined to form a homogeneous mixture. TRUE OR FALSE ? FALSE A solution is made up of two or more different substances combined to form a homogeneous mixture. 300 dollar question What does solvent mean ? The solvent is the substance in which another substance is dissolved. 400 dollar question Fruit juices from concentrate are solutions in which fruit juice concentrate is the solvent. and water is the solute. TRUE OR FALSE ? FALSE Fruit juices from concentrate are solutions in which fruit juice concentrate is the solute and water is the solvent. 100 dollar question Dissolving causes a solute to mix with a solvent to form a solution. TRUE OR FALSE ? TRUE 200 dollar question The solute particles are ______ to the solvent particles ? The solute particles are attracted to the solvent particles. 300 dollar question In order for a substance to dissolve, the forces that hold the two substances together have to be conquered. There are three different ways to dissolve: What are they ? dissociation, ionization, and dispersion. 400 dollar question What does Dissociation mean ? Dissociation is the process that occurs when an ionic compound breaks apart into its ions as it dissolves to form a solution. Sodium chloride (table salt) is an example of one such ionic compound. 100 dollar question Dissolving takes place at the surface of a solid. Because dissolving takes place on the surface. TRUE OR FALSE ? TRUE ! (: 200 dollar question FREE MONEY (: 300 dollar question When a medicine tablet dissolves in a cup of water, it dissolves from the inside first. TRUE OR FALSE ? FALSE! When a medicine tablet dissolves in a cup of water, it dissolves from the outside first. 400 dollar question Breaking the tablet increases the _______ by allowing the solvent to come in contact with more of the tablet. Breaking the tablet increases the surface area by allowing the solvent to come in contact with more of the tablet. b • Atoms consist of positively charged center called a (n) ___. • a. proton b. nucleus • c. neutron d. electron • The ___ is a chart created by chemists to organize the elements according to repeated changes on properties. • a. metalloid list b. periodic table • c. mass number d. isotope b • The ___ is a chart created by chemists to organize the elements according to repeated changes on properties. • a. metalloid list b. periodic table • c. mass number d. isotope • An atom containing six positive charges and six negative charges has ___ charge. • a. a negative b. no net • c. a strong negative d. positive b • An atom containing six positive charges and six negative charges has ___ charge. • a. a negative b. no net • c. a strong negative d. positive • ____ are atoms of the same element that have different numbers of neutrons. • a. Beta particles • c. Alpha particles b. Isotopes d. Compounds b • ____ are atoms of the same element that have different numbers of neutrons. • a. Beta particles • c. Alpha particles b. Isotopes d. Compounds • Which of the following best describes the three general groups of elements? • • • • a. metals, metalloids, and synthetics b. metals, metalloids, and nonmetals c. solid, liquid, and gas d. metals, nonmetals, and noble gases b • Which of the following best describes the three general groups of elements? • • • • a. metals, metalloids, and synthetics b. metals, metalloids, and nonmetals c. solid, liquid, and gas d. metals, nonmetals, and noble gases • A copper wire will bend. This is an example of ___. • • • • a. a chemical property b. physical property c. conservation d. an element b • A copper wire will bend. This is an example of ___. • • • • a. a chemical property b. physical property c. conservation d. an element • An example of a chemical change is ___ . • a. boiling • c. evaporation b. burning d. melting b • An example of a chemical change is ___ . • a. boiling • c. evaporation b. burning d. melting • The beam of headlights shining through fog is an example of ___ . • a. colloid • c. coagulation b. suspension d. the Tyndall effect d • The beam of headlights shining through fog is an example of ___ . • a. colloid • c. coagulation b. suspension d. the Tyndall effect • A solution is another name for a (n) ___ . • a. substance • b. a mixture in which different materials can be easily distinguished • c. element • d. homogeneous mixture d • A solution is another name for a (n) ___ . • a. substance • b. a mixture in which different materials can be easily distinguished • c. element • d. homogeneous mixture • Which of the following is a homogeneous mixture? • a. soft drink • c. gelatin b. milk d. pond water a • Which of the following is a homogeneous mixture? • a. soft drink • c. gelatin b. milk d. pond water • When metal atoms share their outermost electrons with a nonmetal, the metal and nonmetal become ___ . • • • • a. more chemically stable b. radioactive c. less chemically stable d. electrically charged a • When metal atoms share their outermost electrons with a nonmetal, the metal and nonmetal become ___ . • • • • a. more chemically stable b. radioactive c. less chemically stable d. electrically charged • Elements that are shiny and good conductors of electricity are __________ . • a. colloids • c. metalloids b. nonmetals d. metals d • Elements that are shiny and good conductors of electricity are __________ . • a. colloids • c. metalloids b. nonmetals d. metals • Each atom of an alkali metal has __________ electron(s) in its outer energy level. • a. 2 b. 4 c. 1 d. 3 c • Each atom of an alkali metal has __________ electron(s) in its outer energy level. • a. 2 b. 4 c. 1 d. 3 • Substances that can be hammered or rolled into sheets are __________ . • a. semisolid b. malleable • c. inflexible d. ductile b • Substances that can be hammered or rolled into sheets are __________ . • a. semisolid b. malleable • c. inflexible d. ductile • Why are metals good conductors of electricity? • a. Outer-level electrons are weakly held. • b. Outer-level electrons are tightly held. • c. Metals do not share the electrons in their outer energy levels. • d. The outer energy levels of metals are nearly filled. a • Why are metals good conductors of electricity? • a. Outer-level electrons are weakly held. • b. Outer-level electrons are tightly held. • c. Metals do not share the electrons in their outer energy levels. • d. The outer energy levels of metals are nearly filled. • __________ have both metallic and nonmetallic properties. • a. Metals • c. Nonmetals b. Halogens d. Metalloids d • __________ have both metallic and nonmetallic properties. • a. Metals • c. Nonmetals b. Halogens d. Metalloids • What term describes the Group 2 elements beryllium, magnesium, and calcium? • • • • a. alkaline earth metals b. alkali metals c. lanthanides d. transition metals a • What term describes the Group 2 elements beryllium, magnesium, and calcium? • • • • a. alkaline earth metals b. alkali metals c. lanthanides d. transition metals • The number of which type of particle determines the identity of an element? • a. electrons b. neutrons • c. protons d. photons c • The number of which type of particle determines the identity of an element? • a. electrons b. neutrons • c. protons d. photons a. lanthanides b. metalloids c. actinides d. non-metals The illustration shows the upper right section of the periodic table. How are the elements in the lightly shaded region to the right classified? a. lanthanides b. metalloids c. actinides d. non-metals The illustration shows the upper right section of the periodic table. How are the elements in the lightly shaded region to the right classified? • The element hydrogen has three naturally occurring isotopes. Which of the following describes the relationship of these isotopes? • • • • a. different mass, different atomic number b. same mass, different atomic number c. different mass, same atomic number d. same mass, same atomic number c • The element hydrogen has three naturally occurring isotopes. Which of the following describes the relationship of these isotopes? • • • • a. different mass, different atomic number b. same mass, different atomic number c. different mass, same atomic number d. same mass, same atomic number
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