Thursday, 10/17/2013 Physical Science Bellringer # 2-1

Thursday, 10/17/2013 Physical Science Bellringer # 2-1

Thursday, 10/17/2013Physical Science Bellringer # 2-1List at least 5 terms, topics, or concepts that you feel like you need the most review on before Fridays test.1Friday, 10/18/2013Physics Bellringer # 2-1Correct the answer key to Classwork 071A = 70.9 N1B = 169.5 N

Find sin(x)Find cos(x)

2Monday, 10/21/2013Physics Bellringer # 2-2Draw a free body diagramFor this traffic light.

3Monday, 10/21/2013Physical Science Bellringer # 2-2In your own words, define stability, and how it applies to elements in the periodic table.4Tuesday, 10/22/2013Physics Bellringer # 2-3Given the crane diagram:

In what direction(s) are the component forces of cable A directed?In what direction(s) are the component forces of boom B directed?In what direction is the 500N weight directed?

5Tuesday, 10/22/2013Physical Science Bellringer # 2-3What makes an atom stable?What makes an atom unstable?Name 3 ways that an atom can change and become more stable?6Wednesday, 10/23/2013Physics Bellringer # 2-4List at least 5 key things to remember when solving vector analysis problems.

7Wednesday, 10/23/2013Physical Science Bellringer # 2-4When an atom loses an electron, what is it called?What type of charge does the resulting atom have?When an atom gains an electron, what is it called?What type of charge does the resulting atom have?Why might an atom gain or lose an electron?

8Friday, 10/25/2013Physics Bellringer # 2-5Draw a coordinate system.Draw a vector with magnitude 10g at 15 degreesDraw another vector with magnitude 30g at 150 degreesEstimate and draw the resultant vector from the addition of those two vectors.Draw an equilibrant vector that is equal in length but opposite in direction from the resultant.

9Friday, 10/25/2013Physical Science Bellringer # 2-5Describe the differences between ionic and covalent bonds.10Monday, 10/28/2013Physical Science Bellringer # 2-6Write the chemical formulas for the following:Sodium oxideMagnesium chlorideMagnesium Nitride

Be sure to use the oxidation numbers to arrive at the correct subscripts.11Wednesday, 10/30/2013Physical Science Bellringer # 2-7Describe the steps for naming a binary ionic compound.

Choose a metal from group 1 or 2 and a nonmetal from group 16 or 17, write the formula for the compound, and then name the compound.12Thursday, 10/31/2013Physics Bellringer # 2-6Using the same vectors from last Fridays bellringer:Vector A has a magnitude 10g at 15 degreesVector B has a magnitude 30g at 150 degreesCalculate the x and y components of vector ACalculate the x and y components of vector BAdd the x components. This is the x component of the resultant.Add the y components. This is the y component of the resultant.Use the pythagorean theorem to calculate the magnitude of the resultant.

13Thursday, 10/31/2013Physical Science Bellringer # 2-8List the 3 topics from this chapter (20) that have you the most concerned and explain why.

14Friday, 11/1/2013Physics Bellringer # 2-7In your own words, define torque.What are two things that you can do to increase torque?

15Friday, 11/1/2013Physical Science BellringerTake your seat. Clear your desk of everything except a pencil.Be quiet.

16Monday, 11/4/2013Physics Bellringer # 2-8

If the force applied is 2N and the length of the lever is 5m, what is the magnitude of the torque?

If the same 2N force is applied at a 30 degree angleas shown, what is the magnitude of the torque?

17Monday, 11/4/2013Physical Science Bellringer #2-9What law states that matter can neither be created nor destroyed?When a 20 pound log burns and leaves 1 pound of ashes, what happens to the other 19 pounds?18Tuesday, 11/5/2013Physics Bellringer # 2-9

Draw the upward and downward forces at work on this bridge19Tuesday, 11/5/2013Physical Science Bellringer #2-10Balance the following chemical equation:

____ H2 + ___ OH 6H2O20Wednesday, 11/6/2013Physics Bellringer # 2-10Identify a good spot to define the fulcrum.What are the torque forces at work. Assume the boom is 10m long.

21Wednesday, 11/6/2013Physical Science Bellringer #2-11State the law of conservation of mass.Write the steps for balancing a chemical equation.How does the law of conservation of mass apply to balancing a chemical equation?22Thursday, 11/7/2013Physical Science Bellringer #2-12What does an oxidation number tell us?What types of elements are involved in an ionic compound? (metals, nonmetals, )What types of elements are involved in a covalent compound? (metals, nonmetals, )What is the criss-cross method for writing a chemical formula? Given the formula, how do I name a covalent compound?Given the formula, how do I name an ionic compound?23Friday, 11/8/2013Physical Science Bellringer #2-13Turn in your bellringer book containing your bellringers thus far for this grading period.24Tuesday, 11/12/2013Physics Bellringer # 2-11List at least 4 common mistakes or things to remember when working torque problems.25Tuesday, 11/12/2013Physical Science Bellringer #2-13Describe the difference between a physical change and a chemical change.26Wednesday, 11/13/2013Physical Science Bellringer #2-14List and describe the 5 types of chemical reactions.Which 2 types of reactions are the opposite of each other?Which type of reaction is your favorite and why?27Thursday, 11/14/2013Physics Bellringer # 2-12In your own words, define friction?What causes friction?What can increase friction?What can decrease friction?In what direction does friction act?28Thursday, 11/14/2013Physical Science Bellringer #2-15

Write the steps for balancing a chemical equation, then balance the following:29Friday, 11/15/2013Physics Bellringer # 2-13How can you tie the friction formulas used yesterday to the kinematic formulas we have used previously?30Friday, 11/15/2013Physical Science Bellringer #2-16Can you eat a phosphate?Wash your car with a carbonate?Brush your teeth with a sulfate?

Guess answers to these questions. Then, list 2 or 3 chemicals that you experience in everyday objects.31Monday, 11/18/2013Physics Bellringer # 2-14What are the forces of friction in this diagram?In what direction are the frictional forces?What influences the magnitude of the frictional forces?

32Monday, 11/18/2013Physical Science Bellringer #2-17If you havent already, identify a partner to work with on the chemical reaction projectIf you havent already, begin discussions with your partner on what chemical reaction you want to use for your project.33Thursday, 11/21/2013Physics Bellringer # 2-15If the coefficient of friction, m is not zero.Draw the free body diagram for this box.Will it accelerate down the ramp?Will it remain in place?Why?

34Friday, 11/22/2013Physics Bellringer # 2-16Assume that the mass will slide down the ramp. Draw the free body diagram, including the frictional force

35Tuesday, 11/26/2013Physics Bellringer # 2-17What is the easiest thing to understand about friction?What is the most difficult concept about friction?List at least 5 key concepts, rules, or common mistakes that you need to remember to do well when working on friction problems.

36Monday, 12/02/2013Physical Science Bellringer #2-18List 3 things that you learned while working on the chemical reactions project.When you hear the term nuclear, what thoughts come to mind? Why? 37Tuesday, 12/03/2013Physics Bellringer # 2-18Draw the free body diagram for the following

38Tuesday, 12/03/2013Physical Science Bellringer #2-19Does strong force care about the charge of the particles?Does electrical force care about the charge of the p`articles?How much stronger than electrical force is strong force?Can wearing a hat made of aluminum foil protect you from radiation?39Wednesday, 12/04/2013Physical Science Bellringer #2-20Define half-lifeIf I start with 40kg of a radioactive substance, and it has a half-life of 3 days, how much will remain after:3 days6 days9 days12 daysWhat percentage of the original amount is present after 12 days? Express as a fraction.40Wednesday, 12/05/2013Physics Bellringer # 2-19When you are riding/driving a car and you accelerate, in what direction in your seat are you forced?When you are driving around a curve, in what direction are you forced?What does this tell you about the direction of the acceleration while travelling in a circular direction.

41Thursday, 12/05/2013Physical Science Bellringer #2-21Look up the following terms and write definitions:Nuclear fissionNuclear fusionChain reactionTransmutation42Friday, 12/05/2013Physics Bellringer # 2-20F=ma, as alwaysGiven the formula for centripetal acceleration learned yesterday, what would you think the formula for centripetal force would be. Write the formula.

43Friday, 12/06/2013Physical Science Bellringer #2-22Complete the following table. You start with 64 g of a radioactive substance and it has a half life of 7 seconds:TimeHow much substance is left0 seconds7 seconds14 seconds21 seconds28 seconds35 seconds44Monday, 12/09/2013Physical Science Bellringer #2-23What is an alpha particle?What nuclear process creates an alpha particle?What is the mass of an alpha particle (in amus)What is a beta particle?When is a beta particle createdHow are alpha and beta particles similar?Which is larger, an alpha or a beta particle?45Tuesday, 12/10/2013Physics Bellringer # 2-21With a pendulum:What happens to the period as the mass increasesWhat happens to the period as the length increasesWith a spring:What happens to the period as the mass increases?What happens to the period as the spring constant increases?

46Tuesday, 12/10/2013Physical Science Bellringer #2-24What is the difference between nuclear fission and fusion?Draw a diagram depicting fission.Draw a diagram depicting fusion.47