2. Chemistry Jeopardy

3. Learning Objectives (in ? Form) How are elements and compounds similar yet different? What are some examples of each? How are compounds and mixtures different? What’s the difference between mass and weight? What units are used to measure volume? How can density be determined? How can density be used to identify substances?

4. Learning Objectives (in ? Form) What’s the difference between a chemical and physical change? How can you tell which change occurred? How are changes in matter related to changes in energy (endothermic vs. exothermic)? What are the 8 forms of energy related to changes in matter? What are some energy transformations that occur in the real world?

5. RULES 1.The team(s) who answer correctly win the point value of the question. 2.If a team answers a daily double incorrectly, then that team will lose the number of points they bid. 3.There are two daily doubles available. Let’s play

6. 100 200 300 400 500 Final Jeopardy 100 200 300 400 500 Types of Matter M, V, D Changes in Matter Matter & Energy Leftovers

7. Types of Matter for 100 Which of the diagram boxes (A, B, C, or D) from p. 38 represents a compound? Which one represents a mixture? Compound- D Mixture- C

8. Types of Matter for 200 Which of the following can be broken down by physical means: Elements, Compounds, Mixtures? Which one can be broken down by chemical means: Elements, Compounds, Mixtures? Mixtures- can be physically broken down Compounds- can be chemically broken down

9. Types of Matter for 300 What are 2 differences between a compound and a mixture? A compound’s parts are bonded together in a set ratio while a mixture’s are not. A mixture’s parts can be separated by physical means while a compounds cannot.

10. Types of Matter for 400 How do the physical and chemical properties of a compound compare to the elements that make up that compound? The elements have different properties than the compound they make up.

11. Types of Matter for 500 Identify the following as an element, compound, homogeneous mixture, or heterogeneous mixture: carbon monoxide (CO), nitrogen gas (N 2 ), sugar dissolved in water, a pizza. Compound (CO), element (N 2 ), homogeneous mixture (sugar water), heterogeneous mixture (pizza)

12. M, V, D for 100 The measurement of the force of gravity acting on your body is called your ____________. How is this measurement of force different from mass in terms of measuring it at different locations? Weight- changes depending on the force of gravity at various locations

13. M, V, D for 200 What would be your mass if you are 50 kg on Earth and you go to a planet with 5 times the gravity of Earth? What would your weight be if you are 110 lbs. on Earth and you go to the same planet? Mass is still 50 kg Weight = 110 x 5 = 550 lbs.

14. M, V, D for 300 The amount of matter contained in a certain volume is called ___________. How can this be used to determine if an object will sink or float in water? Provide water’s density in your answer. Density- more dense substances sink (more than 1 g/mL), less dense substances float (less than 1 g/mL)

15. M, V, D for 400 Suppose an object has a mass of 23 g and a volume of only 2 mL. What is the likely identity of the object? Lead SubstanceDensity (g/mL) Water1.0 Oak Wood0.85 Lead11.3 Platinum21.5

16. M, V, D DAILY DOUBLE!!! Suppose you obtained a sample of oak wood and platinum both with a volume of 5 cm 3. Which would have the greater mass? Explain your answer. Platinum- it has a higher density so if the volumes were equal, then the platinum sample have to have a greater mass. SubstanceDensity (g/mL) Water1.0 Oak Wood0.85 Lead11.3 Platinum21.5

17. Changes in Matter for 100 What’s the difference between a chemical and a physical change? Chemical- new substance(s) are formed Physical- still the same substance after the change

18. Changes in Matter for 200 If you are examining numerous changes in matter, then what signs will you look for to see if the change is a chemical change? Bubbles of gas/fizzing, color change, light and/or heat is given off

19. Changes in Matter for 300 Which of the following are physical properties: water freezes at 0 o C, iron rusts, silverware becomes tarnished, dry ice (CO 2 ) changes into a gas, copper metal is shaped into sheets of metal? Physical properties = Water freezing, dry ice becoming a gas, copper being made into metal sheets.

20. Changes in Matter DAILY DOUBLE!!! Which of the following properties can be used to help identify a substance: density, melting point, boiling point, chemical reactivity, physical appearance? ALL OF THEM CAN!

21. Changes in Matter for 500 Identify the following as a chemical or a physical change: Ice melting, combustion, electrolysis, glass breaking, frying an egg, milk souring. Ice melting & glass breaking- Physical Changes. Electrolysis, Combustion, Frying an egg, Milk souring- Chemical Changes.

22. Matter & Energy for 100 Whenever matter changes, there is also a change in ___________. Is this change always noticeable? Energy; No

23. Matter & Energy for 200 The type of energy which includes visible light, X-rays, UV rays, and all other types of radiation is called ____________ energy. Electromagnetic

24. Matter & Energy for 300 What type of temperature change would you expect for a typical exothermic process? Endothermic process? Exothermic- temp. goes up/positive (gives off energy) Endothermic- temp. goes down/negative (takes energy out of the surroundings)

25. Matter & Energy for 400 Identify the energy transformations that take place for the following processes: combustion, photosynthesis, using your TV. Combustion- chemical into thermal and electromagnetic Photosynthesis- Solar/electromagnetic into chemical TV- electrical into sound and electromagnetic

26. Matter & Energy for 500 Classify the following processes as an endothermic or exothermic change and as a chemical or physical change: combustion, photosynthesis, sweat evaporating from your skin. Note that sweating (well, the sweat leaving your skin) is your body’s cooling process. Combustion- Chemical & Exothermic Photosynthesis- Chemical & Endothermic Sweat Evaporating- Physical & Endothermic

27. Leftovers for 200 Which of the following are units of volume: grams, milliliters (mL), g/mL, centimeters cubed (cm 3 ), Liters (L)? mL, cm 3, & Liters

28. Density You are given 5 different liquids: I, II, III, IV, V. Rank them from most dense to least dense based upon the following information. Within four different containers: I rests on top of II, V rests on top of I, IV rests on top of V, II rests on top of III. Most dense to least dense: III, II, I, V, IV