Catalyst Catalyst Questions ① A sample of pure zinc metal will always have a density of 7g/mL. If the sample has a mass of 14 grams, what is the volume? You don’t need a calculator. To Do & Homework  Update your Table of Contents Homework: Density Handout  Update your Table of Contents Homework: Density Handout T of C Unit 1: Intro to Chemistry Page LeftRight 3WebquestNotes: Scientific method 4Simpson Exp/Exp DesignExperimentation Gallery Critique

Today’s Agenda To Do: Webquest Lecture: Murder Mystery Magazine Ad Gallery Walk and Student Feedback Reflection Webquest Lecture: Murder Mystery Magazine Ad Gallery Walk and Student Feedback Reflection Norms Webquest – silent Lecture – silent, alert Mag Ad – actively participating Gallery walk – actively reflecting Reflection - silent Webquest – silent Lecture – silent, alert Mag Ad – actively participating Gallery walk – actively reflecting Reflection - silent Narez

Webquest (3L) Norms Must be done silently and individually Don’t just do, understand If done early, start on Density HW Goal: how do scientists use variables and the process they use to answer questions about the world. Must be done silently and individually Don’t just do, understand If done early, start on Density HW Goal: how do scientists use variables and the process they use to answer questions about the world. How do I get there? Sciencebuddies.org Search bar upper right hand corner search for “Scientific Method” Click on the 2 nd link, “Steps of the Scientific Method” Scroll down and click on “Overview of the Scientific Method” Once done, click on “variables” and complete back page. Sciencebuddies.org Search bar upper right hand corner search for “Scientific Method” Click on the 2 nd link, “Steps of the Scientific Method” Scroll down and click on “Overview of the Scientific Method” Once done, click on “variables” and complete back page. Narez

Murder Mystery CSI ESAT High

You are a detective working for the police department. You have just been called to the scene of a murder.

David Duff was found in his home, DEAD. He was stabbed in the stomach 7 times. He was sitting on his couch. The TV was on. He had been watching a Lakers game.

You have 3 possible suspects…

Suspect 1 Lucy (David’s Wife) Earlier that day, she and David got in a heated argument. She hates how he watches TV all the time.

Suspect 2 Carlos (David’s Friend) David told Carlos that he had tickets to the Lakers game. They were supposed to go. But David lied. Carlos was angry.

Suspect 3 Michael (David’s Co-Worker) Michael is a Celtics fan. They really, really don’t like each other.

As a detective, what is the problem that you are trying to solve?

Who do you think killed David Duff? Please make a prediction.

It is time for you to collect evidence… How do you go about doing this?

The evidence you discover… 1) You interview Carlos and find out that he actually found someone else who had tickets to the Lakers game. They were at Staples Center.

2) You interview Lucy’s friend and the friend says that she wasn’t mad at David anymore about watching TV. Plus, they were at the mall all afternoon. There was no way she could have killed David during that timeframe.

3) You interview Michael. He says that he was at work at the time of the murder. You talk to his boss. Turns out…Michael left work early.

Based on the evidence you have discovered, who do you think killed David Duff? Why?

Congratulations! You have used your logic skills to solve the murder mystery! Upon further search, you find a bloody knife in the trunk of Michael’s car. The DNA matches David’s.

Detective Skills and the Scientific Method The process that you used to solve the murder mystery is very similar to the process that scientists use to discover new things.

The Scientific Method involves steps used to gather information and find answers

In science we cannot jump into conclusions! Evidence = Data!

1. Observation or Question 2. Formulate a Hypothesis 3. Experiment 4. Gather Results 5. Conclusion

Steps of the Scientific Method Observation Observation: Make observations using the five senses (see, touch, smell, taste, hear)OR Question Question: Develop a question that can be solved through experimentation. Who killed David Duff?

Do you remember the next step?

Steps of the Scientific Method 2. Formulate a Hypothesis 2. Formulate a Hypothesis: A possible explanation to the question/observa tion. If___ then___ format If I interview the three suspects, then I will find the murderer

Steps of the Scientific Method 3. Plan the Experiment: Develop and follow a procedure (gameplan). The outcome must be measurable (collect data). I will interview the suspects and determine the place they were located during the time in which the murder took place.

Steps of the Scientific Method 4.Collect and Analyze Results 4.Collect and Analyze Results: Include tables, graphs, and photographs.

Steps of the Scientific Method Conclusion Conclusion: interpret the results and do the results/data support or reject the hypothesis. Michael was most likely the killer. My hypothesis was___ and the data supports it.

7 Minutes of Terror Essential Question – What variables are involved to help land curiosity on mars?

Variables Heat of the rover Landing Speed The air Gravity Change only one variable to see how it affects something else. Everything else keep constant.

Independent Variable is a variable that you purposefully change to see how it affects something else. Jon is going to use 10g, 15g, 20g of yeast to determine how bread forms in the oven. How to set up an experiment correctly!

Dependent Variable The dependent or responding variable is something else that changes because of the first thing you changed. In this case, it would be the amount of bread made. How to set up an experiment

Control In a scientific experiment, the control is a sample that serves as comparison. The control is a “no treatment” sample Sample with no yeast How to set up an experiment

Magazine Ad

Gallery Critique Noise Level: Low (whisper voice) Don’t just do, understand. The peer feedback is very important. Be neat, place in envelope. If done early, do some practice problems as review. Practice using the Ipad calculator.

Group Reflection On your reflection form behind catalyst, reflect on the feedback you received:  According to my peers, …..  I need to work on….  I could have ….

Catalyst Catalyst Questions ① Yeast are given different levels of oxygen to observe how much the yeast grows over time. Determine the independent variable, dependent variable. What factors should be kept constant? To Do & Homework  Update your Table of Contents Homework: None  Update your Table of Contents Homework: None T of C Unit 1: Intro to Chemistry Page LeftRight 3WebquestNotes: Scientific method 4Simpson Exp/Exp DesignExperimentation Gallery Critique 5Physical/Chemical Lab #2Notes: Physical VS Chemical

Today’s Agenda To Do: Simpsons Handout Scientific Method Pogil Lecture: Physical and Chemical Changes Simpsons Handout Scientific Method Pogil Lecture: Physical and Chemical Changes Norms Simpsons Handout – You may speak to a neighbor only about the handout. POGIL – collaborate using the role cards. Lecture – actively listen Simpsons Handout – You may speak to a neighbor only about the handout. POGIL – collaborate using the role cards. Lecture – actively listen Narez

Catalyst Catalyst Questions ① There are different colored powders which all have different properties. They all emit (release) a colored light in the presence of fire. This is how fireworks work. What is the independent and dependent variable. To Do & Homework  Update your Table of Contents Homework: None  Update your Table of Contents Homework: None T of C Unit 1: Intro to Chemistry Page LeftRight 3WebquestNotes: Scientific method 4Simpson Exp/Exp DesignExperimentation Gallery Critique 5Physical/Chemical Lab #2Notes: Physical VS Chemical

Narez On Page 5L draw the following table, 6 stations total. 6R – Notes: Sci Notation 6L - Practice (HW: Odd#’s)

On your notes, make the following table under “Lab Table” Station # What was done? In the form of an equation. What did you observe? Is it a physical or chemical change? WHY? USE SCIENTIFIC LANGAUGE that you already know! example cut Paper  Diced Paper The paper was divided into smaller pieces PhysicalThe matter was re- arranged but no new substance formed. It’s still paper

Changes in Matter

5R: Changes in matter are described as a Physical Change or Chemical Change

Physical Change  Appearance changes but no new substance forms.  Solutions may form. Solution is a homogenous mixture (substances are uniform in solution) composed of at least two different substances. Heterogenous Homogenous

Chemical Change  A new substance forms. Usually irreversible.  In molecules, bonds break and new bonds form. This is a chemical reaction.  Evidence that a chemical reaction occurred:  Color Change  Precipitate (solid) formed  Gas forms (usually CO 2 )  Temperature changes (release of heat, cooling)

Arrange the following into the categories below: iron rusting, gas burning, eggs cooking, candle melting, milk souring, boiling water, ice melting, dicing potatoes Narez Physical ChangeChemical Change

Compare answers with partner, discuss, and change answers Narez

Reflection Narez

Classifying Matter Puzzle Purpose?  Solid, liquid, gas at the particle level  Physical change at the particle level  Chemical change at the particle level  What images are not related to the above Narez

Notes: Scientific Notation  Done on overhead.  If you know how to do this already, go straight into doing the practice problems.  If done with those, you can get work done from another class. Narez

To Do:  Practice Questions  Reflection and Exit Slip Narez

Prompt #1