Final Jeopardy <ul><li>Electron Dot Diagrams </li></ul>
Final Jeopardy answer How many dots would be in Phosphorous ‘s dot diagram?
$200 A hypothesis What is an educated guess or testable prediction called?
$400 Matter & Energy <ul><li>What is studied in Physical Science? </li></ul><ul><li>Plants </li></ul><ul><li>Matter & energy </li></ul><ul><li>Earth & space science </li></ul>
$600 Independent variable What is the name of the one variable that is changed and tested in an experiment?
$800 Precision What is the term for how close repeated measurements are to each other when conducting trials?
$1000 Time on the timer is what was measured. What was the dependent variable when you tested either weight or ramp height of your car?
$200 <ul><ul><li>60 – 50mL = 10 mL of space would be taken up by the object. </li></ul></ul>What would be the volume of an object that when placed in water makes the water go from 50 mL to 60 mL?
$400 <ul><ul><li>“ King Henry Doesn’t Bang doors christmas morning.” </li></ul></ul>What is the seven word saying to help you remember the order of the metric prefixes and base units?
$600 <ul><ul><li>5.0 x 10 -5 </li></ul></ul>What is 0.00005 written in scientific notation?
$800 <ul><ul><li>Hecto to centi is 4 steps RIGHT on the prefix chart so shift the decimal 4 steps right. 25 becomes 2500 cg. </li></ul></ul>Use a metric prefix chart and convert 25 hg to cg.
$1000 65.91 kg Solve the following problem – convert 145 pounds into kg (1 kg = 2.2 lbs)
$200 Heterogeneous What is an unevenly mixed mixture called?
$400 Compound Under what category of matter is salt classified?
$600 Physical Change – it is only a phase change. Is gasoline evaporating a physical or chemical change? How can you tell?
$800 Un-pure mixtures can be physically separated while substances such as elements and compounds cannot. What is the difference between un-pure mixtures and pure substances?
$1000 Colloids are NOT clear and are considered heterogeneous while solutions are clear and are considered homogeneous mixtures. What is the difference between a colloid and a solution?
$200 The nucleus. What is the center of an atom called?
$400 The neutron Which subatomic particle has the same mass as a proton?
$600 Protons plus neutrons added together. How is the mass number of an element determined?
$800 Atomic number is number of PROTONS. Mass number is the number of PROTONS + NEUTRONS What is the difference between an element’s ATOMIC NUMBER and MASS NUMBER?
$1000 11 Protons, 11 Electrons and 12 Neutrons (23-11 for neutrons.) If sodium (Na) has a atomic number of 11 and a mass number of 23, calculate the its number of protons, electrons and neutrons.
$200 They have a FULL outer electron level. Why are the noble gases (group 18) the most chemically stable elements?
$400 The outer level electrons What do the dots represent in an electron dot diagram?
$600 +3 What will be the charge of an atom that loses 3 electrons?
$800 MgCl 2 If magnesium has a charge of +2 and chlorine has a charge of -1, what will be the ionic formula for this compound?
$1000 Ions are charged particles while isotopes are elements that can have masses of different sizes (because of a difference in neutrons.) What is the difference between an ION and an ISOTOPE?
$200 Exothermic What kind of reaction is present if heat is given off?
$400 Decomposition What kind of reaction is shown? 2H 2 O 2 ----- 2H 2 O + O 2
$600 A single replacement reaction starts with an element and compound while a double replacement reaction starts with two compounds. How can you tell the difference between a single versus a double replacement reaction?
$800 1. Particle size 2. Concentration 3.Temperature 4. Catalyst List at least three of the four factors that can change the rate or speed of a chemical reaction.
1000 What would be the coefficients for this reaction? __B + __F 2 ----- __BF 3 2 B + 3 F 2 ------ 2 BF 3