DefnsClassif. of Matter Periodic Table PropertiesPotpourri Final

Final Jeopardy State the Law of Conservation of Energy Answer

Answer to Final Jeopardy Energy cannot be created or destroyed but can be transformed into different types ex. chemical, kinetic, potential, mechanical, electrical, heat, sound, etc.

100 Definitions The smallest unit of matter is a(n) Answer Answer

Definitions 100 Answer An Atom

200 Definitions A.The chemistry of carbon compounds B.The chemistry of living organisms Answer Answer

Definitions 200 Answer A.Organic Chemistry B.Biochemistry

300 Definitions A.Research simply to gain knowledge B.Research performed to solve a particular problem Answer Answer

Definitions 300 Answer A. Basic Research B. Applied Research

400 Definitions Define matter. Of the following, which are matter? EarthSunlight Water Air Answer Answer

Definitions 400 Answer Matter is anything that has mass and takes up space. Water, air and earth are matter. Sunlight is energy.

500 Definitions Are changes of state physical or chemical changes? Name 4 of the following state changes: solid  liquidsolid  gas gas  liquidliquid  solid liquid  gas Answer Answer

Definitions 500 Answer State or phase changes are physical changes solid  liquid = melting solid  gas = subliming gas  liquid = condensing liquid  solid = freezing liquid  gas = boiling, evaporating

100 Classification of Matter Give 1 example each of solutions in which the solvent is in the solid, liquid and gas phases. Answer Answer

Classification of Matter 100 Answer Solid solution = brass, bronze, pewter, or any alloy Liquid solution = ethanol in gasoline or sugar dissolved in water Gaseous solution = air

200 Classification of Matter List the three main types of mixtures in order of increasing particle size. Answer

Classification of Matter 200 Answer Solution – smallest particles – they are individual ions, atoms or molecules Colloid – intermediate size particles Suspension – largest size particles – too heavy to stay mixed without stirring or shaking

300 Classification of Matter Explain the difference between elements and compounds. Classify each of the following as an element or compound: CH 4 N 2 S 8 NH 4 ClKI Mo Answer Answer

Classification of Matter 300 Answer Elements are composed of only one type of atom. Compounds are composed of two or more different elements. CH 4 NH 4 Cl and KIare compounds Mo, S 8 and Fe are elements

400 Classification of Matter Classify each of the following as a homogeneous mixture, colloid, suspension, element or compound Answer 1. Sprite or Sierra Mist soda 2. Gel toothpaste 3. Carbon dioxide gas 4. Latex paint (must be stirred before using)

Classification of Matter 400 Answer 1.Sprite or Sierra Mist soda = solution 2.Gel toothpaste = colloid 3.Carbon dioxide gas = compound 4. Latex paint (must be stirred before using) = suspension

500 Classification of Matter You are shown a bottle containing a liquid. Describe what you could do to determine whether it is a homogeneous mixture, a heterogeneous mixture or a pure substance. (Your answer must differentiate between all 3 possibilities) Answer Answer

Classification of Matter 500 Answer Shine a light through it – if it is scatters light, is cloudy, it is a heterogeneous mixture. If it is clear, heat a sample to boiling. If, when the liquid boils away, there is a solid left behind, it was a solution. If there is nothing left after boiling at a constant temperature, it was a pure substance.

100 Periodic Table Give the symbols of 3 metalloid elements. Answer Answer

Periodic Table 100 Answer B, Si, Ge, As, Sb, Te, Po

200 Periodic Table Explain why Ne, He, Xe, Ar, Kr are in the same column. What is the name of this group of elements? Answer Answer

Periodic Table 200 Answer They all have the similar property of non-reactivity. They all have full valence shells. The group is called “Noble Gases”

300 Periodic Table Name and give symbol for the element that is left of the staircase (not touching the staircase) but is not considered to be a metal. Answer Answer

Periodic Table 300 Answer Hydrogen, H

400 Periodic Table a metalloid in Period 2. a solid nonmetal. a metal from Group 14. a liquid element from the fluorine family. a transition metal heavier than gol a halogen with more protons than tin (Sn) Answer Answer

Periodic Table 400 Answer a metalloid in Period 2 = Boron a solid nonmetal = C,P,S,I,Se a metal from Group 14= Sn, Pb a liquid element from the fluorine family = Bromine transition metal heavier than gold = Hg halogen w/ more protons than Sn = I

500 Periodic Table Name the two element rows at the bottom of the periodic table. Give two reasons why these two rows are located at the bottom of the table rather than within it. Answer Answer

Periodic Table 500 Answer Lanthanide series (lanthanoids) Actinide series (actinoids) They are apart from the table because the elements in the rows have similar properties to each other but different valence structures and properties from the other table groups. Their removal also makes the table a more manageable size.

100 Properties Classify each of the following as a chemical or physical change: Grinding peppercorns Baking a cake Grilling a hamburger Making lemonade Mixing red and blue paint to make purple Answer

Properties 100 Answer Grinding peppercorns = physical Baking a cake = chemical Grilling a hamburger = chemical Making lemonade = physical Red+Blue paint to Purple = phys

200 Properties A pure substance has the following properties: density of 13.5 g/cm 3 good conductor of electricity liquid at room temperature has a silvery luster is composed of only one type of atom Identify this substance. Answer Answer

Properties 200 Answer Hg the properties indicate it is a liquid metal element

300 Properties Isopropanol (Rubbing Alcohol) Give the following properties for this substance: Intensive, qualitative Extensive, quantitative Chemical Answer Answer

Properties 300 Answer Intensive, qualitative = astringent odor, clear, colorless, liquid at room temperature Extensive, quantitative = 500 mL Chemical = flammable, kills germs

400 Properties Explain the useful property shared by metalloids. What are the applications for these elements? (in what devices are they used?) Answer Answer

Properties 400 Answer Metalloids are useful as semi-conductors – materials which have increasing conductivity with increasing temperature Semi-conductors are used in computers, cell phones, iPods, etc. -- anything computerized

500 Properties Other than good conductivity of heat and electricity, name and define 4 properties that are unique to metals. Answer Answer

Properties 500 Answer Malleable – able to be pounded into thin sheets Ductile – able to be drawn into wire Luster – reflective, shiny Tensile strength – resist breaking when stretched

100 Potpourri Name the four phases (states) of matter Answer Answer

Potpourri 100 Answer Solid Liquid Gas Plasma

200 Potpourri Describe the plasma phase of matter. In what common item(s) can plasma matter be found? Answer Answer

Potpourri 200 Answer Plasma is a high temperature state of matter in which gaseous atoms have lost electrons Plasma is the material in fluorescent light bulbs, stars, the sun, neon lights, lightning.

300 Potpourri Write the word or chemical equation for the combustion of a hydrocarbon fuel. Answer Answer

Potpourri 300 Answer Word equation: Fuel + Oxygen  Carbon dioxide + Water vapor Chemical equation: Hydrocarbon fuel + O 2  CO 2 (g) + H 2 O (g)

400 Potpourri In the following chemical equation, draw a box around the reactant(s). Draw an oval around the product(s) Ag + 2HNO 3  AgNO 3 + NO 2 + H 2 O

Answer Potpourri 300

500 Potpourri Describe the 4 signs indicating a chemical change has occurred and the observations associated with each. Define all scientific terms. Answer Answer

Potpourri 500 Answer Color change (new color) Production of a gas (bubbling) Formation of a precipitate – an insoluble solid – indicated by cloudiness in a liquid Evolution of heat and/or light (flame or light produced)