defnsclassif. of matter periodic table propertiespotpourri 100 200 300 400 500 final
TRANSCRIPT
Defns Classif. of Matter
PeriodicTable
Properties Potpourri
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
Final
Answer to Final Jeopardy
• Two or more elements held together by covalent bonds that have the identity and properties of a particular substance.
• Examples: CH4 H20 F2
300 Definitions
A.Research simply to gain knowledge
B. Research performed to solve a particular problem
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 liquid solid gasgas liquid liquid solidliquid gas Answer
Definitions 500 Answer
State or phase changes are physical changes
solid liquid = melting
solid gas = subliming
gas liquid = condensing
liquid solid = freezingliquid 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
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 MatterExplain the difference between elements
and compounds.Classify each of the following as an
element or compound:
CH4 N2 S8 NH4Cl KI Mo
Answer
Classification of Matter 300 Answer
Elements are composed of only one type of atom.
Compounds are composed of two or more different elements.
CH4 NH4Cl and KI are compounds
Mo, S8 and Fe are elements
400 Classification of MatterClassify each of the following as a homogeneous
mixture, colloid, suspension, element or compoundAnswer
1. Sprite or Sierra Mist soda2. Gel toothpaste3. Carbon dioxide gas4. 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
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.
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
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 the element that is left of the staircase (not touching the staircase) but is not considered to be a metal.
Answer
400 Periodic Table• Name a metalloid in Period 2.• Name a solid nonmetal.• Name a metal from Group 14.• Name a liquid element from the
fluorine family. • Name a transition metal heavier
than gold• Name a halogen with more protons
than tin (Sn) 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
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 PropertiesClassify each of the following as a
chemical or physical change:• Grinding peppercorns• Frying an egg• Baking a cake• Making lemonade• Mixing red and blue paint to make
purpleAnswer
Properties 100 Answer
• Grinding peppercorns = physical
• Frying an egg = chemical
• Baking a cake = chemical
• Making lemonade = physical
• Red+Blue paint to Purple = phys
200 PropertiesA pure substance has the following
properties:
• density of 13.5 g/cm3
• good conductor of electricity
• liquid at room temperature
• has a silvery luster
• is composed of only one type of atom
Identify this substance. Answer
300 Properties
Isopropanol (Rubbing Alcohol)Give the following properties for this
substance:• Intensive, qualitative• Extensive, quantitative• Chemical
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
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
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
200 Potpourri
Describe the plasma phase of matter.
In what common item(s) can plasma matter be found?
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.
Potpourri 300 Answer
Word equation:Fuel + Oxygen Carbon dioxide + Water vapor
Chemical equation:
Hydrocarbon fuel + O2 CO2 (g)+ H2O(g)
400 Potpourri
In the following chemical equation, draw a box around the reactant(s). Draw an oval around the product(s)
Ag + 2HNO3 AgNO3 + NO2 + H2O
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)