The Nature of Science

ACT Opener  Keep the opener sheet with you for two weeks  Write the question and answer it  Which statement is always true for a compound?  A. It is homogeneous  B. It contains only 1 element  C. Its chemical composition varies  D. It decomposes by physical means

Review  Growth Mindset  Keep trying until you get it  Then keep making it better  Test your mindset  Which mindset are you?  Which mindset do you want?

Unit 1: The Nature of Science  “I Can” statements  Standards for the entire unit  That is what you will be tested on  Keep in your notebook

Unit Pre-Test  Answer the Pre-Test questions  Do your best  Similar to Unit test

Notes (keep in binder)  What is science?  Observing and knowing the physical world  Theory- the most logical explanation of events that occur in nature  Law- A theory that has been tested many times and is accepted as true

Notes  Scientific Method- systematic approach to problem solving  Generally 6 steps (you may have learned 5)  Stating a problem  Gathering information  Forming a hypothesis  Performing experiments  Recording and analyzing data  Stating a conclusion

Opener  Make sure to copy the question and the answer  What is the name given to anything that takes up space and has mass  A. Compound  B. Matter  C. Mixture  D. Substance

Review  Standards and “I can’s”  Pre-test

Notes  Scientific Method- systematic approach to problem solving  Generally 6 steps (you may have learned 5)  Stating a problem  Gathering information  Forming a hypothesis  Performing experiments  Recording and analyzing data  Stating a conclusion

Notes  Can you think of ways for us to describe each?

Opener  Copy the question and the answers  When Alex distills Substance X, he obtains 3 different pure liquids with boiling points of 150°C, 250°C, and 350°C. How should Alex classify Substance X  A. Element  B. Compound  C. Mixture  D. Molecule

Review  Scientific Method  Independent Variable?  Dependent Variable?  Control?

Notes  Variable- a factor being tested  Two types  Independent variable- the one you change  Dependent variable- the one that changes on its own  control- any factor that remains the same  Great experiments have lots of controls

Notes  Hypothesis-  Educated guess/proposed solution  What makes a good one?  Branches of Physical Science  Chemistry- the study of what substances are made of and how they change  Physics- the study of forms and energy and laws of motion

Class example

Scientific Method Practice  Work alone  10 minutes  Work in pairs  10 minutes  Check your answers with another group  5 minutes  Decide on correct answers  Group of four will be graded  Turn in one paper with four members’ names on it for actual grade

MythBusters Method  Watch this 2 minute clip  Fill out the worksheet that goes along with it  Listen carefully, they cover information quickly

Target Check  On a piece of paper (to stay in your binder)  List the steps of the scientific method  Explain each step in your own words  MUST be complete sentences!!!

Homework  More practice  Complete the worksheet for homework  Due TOMORROW!!!!!

Opener  Copy question and answers  Which set contains only physical properties?  A. Color, taste, ability to rust  B. Boiling point, solubility, viscosity  C. Density, flammability, freezing point  D. melting point, odor, reactivity to light

Review  A lot of practice with variables and controls  Homework Turn In  Change in Schedule

Notes  A little different way of taking notes today

Practice Problems  Complete the practice problems  What you don’t get done in class is homework

Opener  Copy the question and answers  A chemistry student finds a beaker in the lab containing a mixture of copper(II) sulfate and sand. The student adds water to the beaker, and the solution turns blue. What technique would be best to separate the blue solution from the sand?  A. Chromatography  B. Distillation  C. Evaporation  D. Filtration

Review  SI units  We have to know these  I know it is difficult  Keep working  Growth Mindset = “You just don’t know how to do it… YET”

Study Guide Board  Each person...  Think of a topic or vocab word to add to our board  Write it on the piece of paper  Turn it in

Pre-Test  Look at it again  15 minutes  Correct things  Change things  Add more things

Investigate  Four Groups  One paper per group  List the steps of the scientific method and how each apply to your investigationg  Problem: Is it a liquid or solid?

Lab!!!  Fun with phases or states of matter  Work in groups of 4  Please remember to keep things clean  Don’t throw stuff down the drains

Opener  Copy question and answers  The label on a bottle of water indicates the bottle contains 455 mL of water. How many liters of water are in the bottle?  A  B  C. 45,500  D. 455,000

Review  Study Guide Board  Feel free to add to it this week  Pre-Test  Investigation  Was it solid or liquid?

New Activity  In lab groups  Complete the activity sheet using the materials provided  One paper for each group

Notes  Try something a little different  Take notes from another PowerPoint  This will be made available on my website tonight

Practice Problems  I will do some with you  Homework  Whatever you don’t get done in class  Due Tomorrow