Q: How often do I make chemistry jokes? (submitted by Brian Dixon) JOKE OF THE DAY: Q: How often do I make chemistry jokes? A: Periodically. (submitted by Brian Dixon)

Jeopardy Waves Chemical Reactions Surprise! Q $100 Q $100 Q $100 Atoms & Matter Surprise! Radioactivity Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Final Jeopardy

Water waves transport… $100 Question from H1 Water waves transport…

$100 Answer from H1 Energy only!!!

Why does an apple look red? $200 Question from H1 Why does an apple look red?

$200 Answer from H1 An apple looks red because it reflects red light waves and absorbs all other colors.

$300 Question from H1 The pitch of sound and the color of light are determined by the wave’s…

$300 Answer from H1 Frequency

Light is said to be “duel-natured.” What does this mean? $400 Question from H1 Light is said to be “duel-natured.” What does this mean?

Light sometimes behaves as a wave and sometime behaves as a particle. $400 Answer from H1 Light sometimes behaves as a wave and sometime behaves as a particle.

List and describe the Wave Categories $500 Question from H1 List and describe the Wave Categories

$500 Answer from H1 Mechanical-require medium Electromagnetic-use oscillating electric & magnetic fields to travel Longitudinal-particles vibrate parallel to wave Transverse- particles vibrate perpendicular to wave

$100 Question from H2 Magnesium has two electron in its outer shell and chlorine has 7 valence electrons. The atoms will form a _______ bond by _______ their electrons.

$100 Answer from H2 Mg+1 Cl-1 Ionic bond Transferring electrons

How many neutrons does the element below have? $200 Question from H2 How many neutrons does the element below have?

mass = protons + neutrons 63.55 round to 64 64 - 29 p+ = 35 n0 $200 Answer from H2 Copper has 35 neutrons. mass = protons + neutrons 63.55 round to 64 64 - 29 p+ = 35 n0

What is the name of this compound SO4 $300 Question from H2 What is the name of this compound SO4

$300 Answer from H2 Sulfur Tetroxide

List 4 signs that a chemical change has occurred. $400 Question from H2 List 4 signs that a chemical change has occurred.

$400 Answer from H2 Production of Gas (fizzing/bubbling/foaming) Production of Heat Production of Light Production of Sound Change in Odor Change in Color

What is the difference between a mixture and a pure substance? $500 Question from H2 What is the difference between a mixture and a pure substance?

Pure substances have a definite chemical composition. Mixtures do not. $500 Answer from H2 Pure substances have a definite chemical composition. Mixtures do not. Elements- One type of atom Compounds- One type of molecule Heterogeneous mixture- unevenly mixed Homogeneous mixture- evenly mixed

$100 Question from H3 In what type of chemical reaction does one large compound get broken down into two or more smaller units?

$100 Answer from H3 Decomposition

What type of chemical reaction is shown here: $200 Question from H3 What type of chemical reaction is shown here: 3CuCl2 + 2Al  2AlCl3 + 3Cu

$200 Answer from H3 Single-Replacement

$300 Question from H3 When balancing a chemical equation, only numbers called ______________ may be added in front of the chemical formulas.

$300 Answer from H3 Coefficients 3CuCl2 + 2Al  2AlCl3 + 3Cu

$400 Question from H3 The number of atoms of an element in the reactants must equal the number of atoms of the element in the products in order for an equation to be balanced. This supports the law of…

The law of conservation of mass $400 Answer from H3 The law of conservation of mass

List three ways to speed up a chemical reaction. $500 Question from H3 List three ways to speed up a chemical reaction.

$500 Answer from H3 Increase the temperature Increase the surface area (smal1er pieces) Increase the concentrations Increase the pressure Add a catalyst/enzyme

Radioactive materials have unstable…. $100 Question from H4 Radioactive materials have unstable….

$100 Answer from H4 nuclei

In alpha decay, the nucleus of what element is emitted as radiation? $200 Question from H4 In alpha decay, the nucleus of what element is emitted as radiation?

(2 protons and 2 neutrons) $200 Answer from H4 Helium (2 protons and 2 neutrons)

In beta decay an electron is emitted and… $300 Question from H4 In beta decay an electron is emitted and…

One neutron becomes a proton. $300 Answer from H4 One neutron becomes a proton.

Which type of radiation is the most penetrating and most dangerous? $400 Question from H4 Which type of radiation is the most penetrating and most dangerous?

$400 Answer from H4 Gamma

Describe the difference between nuclear fusion and nuclear fission. $500 Question from H4 Describe the difference between nuclear fusion and nuclear fission.

$500 Answer from H4 In nuclear fusion, two small nuclei combine to create one larger one, and in nuclear fission, one large nucleus splits into two smaller ones.

In the equation E= mc2, what is “c”? $100 Question from H5 In the equation E= mc2, what is “c”?

$100 Answer from H5 c = the speed of light 3.0 x 108 m/s

$200 Question from H5 What does it mean to say that a chemical reaction has reached equilibrium?

$200 Answer from H5 When a reaction has reached equilibrium, it means that the forward and reverse reactions are occurring at the same rate.

Which statement about kinetic theory is FALSE? $300 Question from H5 Which statement about kinetic theory is FALSE? All matter is made up of tiny, invisible particles. The particles are always moving. Particles move faster at higher temperatures. More massive particles move faster than smaller particles at the same temperature.

$300 Answer from H5 #4:More massive particles move faster than smaller particles at the same temperature. Should read: slower

At what temperature does water freeze and boil on the Celsius scale? $400 Question from H5 At what temperature does water freeze and boil on the Celsius scale?

$400 Answer from H5 SCALE FREEZE BOIL Celsius 0°C 100°C Fahrenheit Kelvin 273 K 373 K

$500 Question from H5 The Periodic Table is organized in a series of rows and columns called periods and groups. The periods are in order of ______ _______. Elements in the same group share the same number of _______ ______.

$500 Answer from H5 The Periodic Table is organized in a series of rows and columns called periods and groups. The periods are in order of atomic number. Elements in the same group share the same number of valence electrons.

What happens to atoms and molecules during a chemical reaction? Final Jeopardy What happens to atoms and molecules during a chemical reaction?

The atoms are re-arranged. Final Jeopardy Answer The atoms are re-arranged. 3CuCl2 + 2Al  2AlCl3 + 3Cu