Today is: Friday, October 21st10/21/2016 #followyourdreamsfriday1. What are some of your biggest goals in life?2. Which of the following is an example of a chemical

change? Why? Justify your answer.a. A bronze statue turns green in the air.b. A piece of chalk is crushed into a powder.c. A piece of metal is hammered until it is flat.d. Rock melts into magma.

Science News: Ultimate Dog Tease

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You have been working so hard all week! So today’s video is just for fun. No questions to answer. :)

Agenda:● Upset

Stomach Lab

Last Class:● Copper (II)

Sulfate Lab

Next Class:● Alien Juicebar

Virtual Lab

Learning Target:● I can identify matter based on physical and chemical

changes.

Answer to Warm Up Question #2:

Which of the following is an example of a chemical change?

a. A bronze statue turns green in the air.b. A piece of chalk is crushed into a powder.c. A piece of metal is hammered until it is flat.d. Rock melts into magma.

Why?!

Answer to Warm Up Question #2:

Which of the following is an example of a chemical change?

a. A bronze statue turns green in the air.b. A piece of chalk is crushed into a powder.c. A piece of metal is hammered until it is flat.d. Rock melts into magma.

Why?!

4 3 2 1

In addition to mastering level 3, I make in-depth inferences and applications that go beyond what was taught in class.

I am able to classify:

● Physical properties (states, density, boiling point, melting point, solubility)

● Chemical properties (reactivity, pH, acid/base/neutral, oxidation)

● Physical Changes (i.e., phase change)

● Chemical Changes (i.e., color change, endothermic, exothermic, generation of a gas, precipitate)

I am able to explain: ● how the transfer of energy

can affect the physical/chemical properties of matter.

I can define the following terms:

● Physical property

● State (solid, liquid, gas)

● Density

● Boiling point

● Melting point

● Solubility

● Physical Change

● Phase change

● Chemical property

● Reactivity

● pH, acid, base, neutral

● oxidation (corrosion)

● Chemical reaction

● Color change

● Generation of gas

● Precipitate

● Endothermic reaction• Exothermic reaction

With help, I can perform at level 2.

I am able to identify: matter based on physical/chemical properties, the evidence of a physical/chemical change and how the transfer of energy affects the physical/chemical properties of matter.

https://docs.google.com/document/d/1MVxiXiv-OUKpgBw-T8A3rIHdccP0zh8BNGUshEq4BkU/edit?usp=sharing

An acid is a substance that donates hydrogen ions.

A base is a substance that accepts hydrogen ions.

A substance that is neither acidic nor basic is neutral.

The pH scale measures how acidic or basic a substance is. Stands for “power of Hydrogen”.

••••

Academic Lab

Please get out a book and begin reading!

Separating Mixtures Lab

Separating Mixtures Lab

Objective:Separate a mixture of salt, iron filings, pepper, and sand by each substance’s physical properties.

Procedure:•You and your group will need to come up with a procedure to separate each part of the mixture (yes, it’s possible!!)•Think about what physical properties you could use to separate each substance!

Materials:•Funnel•Coffee Filter•Graduated Cylinder•Spoon•Beaker•Magnet•Paper plate•Mixture of Iron Filings, Salt, Pepper, Sand in a cup

Exit ticket

1. What physical changes did you observe when you separated the mixture with your group?

2. How successful were you (on a scale of 1-10) in separating and recovering each of the four components? Justify your success based on your observations.

Academic LabPhysical vs. Chemical Change Lab

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Academic LabPhysical vs. Chemical Change Lab

OBJECTIVE: To differentiate between chemical & physical changes.

BACKGROUND: When a physical change occurs, only the form of the substance changes. Chemical changes, however, result in the formation of new substances with different properties. Some general signs of a chemical change include a change of color or odor, the formation of a precipitate (solid), the formation of a gas, and a change in heat or light. In this lab, you will perform different activities and, based on your observations, determine whether a chemical or physical change has taken place.

Academic LabPhysical vs. Chemical Change Lab

SAFETY:

Before lighting the match, tie back long hair and secure loose clothing. After extinguishing the match, thoroughly douse it with water before placing it in the designated waste beaker.

Do not ingest any chemicals.Absolutely no goofing off.

Academic LabPhysical vs. Chemical Change Lab

MATERIALS: Match ChalkVinegarWaterSucroseCalcium Chloride SolutionSodium Carbonate SolutionMortar and PestleTest TubesCandleFoil SquareTongs

Academic LabPhysical vs. Chemical Change Lab

PROCEDURE:Perform each of the following activities and carefully observe what happens. After each activity, complete your data table.Lighting a match – Light a single match (refer to safety precautions listed above).Lighting a candle: Light a single candle. Observe the candle for 45 seconds. Heating Sucrose: Take a pinch of sugar and place it on the foil. Using the tongs, hold the foil

over the candle for approximately 1 minute.Crushing chalk – Use a mortar and pestle to crush a piece of chalk.Mixing crushed chalk with vinegar – In a test tube, mix a small amount of the crushed chalk

from Activity #2 with vinegar.Mixing crushed chalk with water – In a test tube, mix a small amount of the crushed chalk from

Activity #2 with water.Dissolving sucrose in water – In a test tube, dissolve a small amount of sucrose in water.Mixing CaCl2 and Na2CO3 solutions – In a test tube, combine several drops each of the calcium chloride and sodium carbonate solutions.

Academic LabPhysical vs. Chemical Change Lab

DATA:

Activity Title Chemical or Physical Change Evidence

Lighting a Match Lighting a match is a _______ change because...

Academic LabPhysical vs. Chemical Change Lab

ANALYSIS:Directions: Look at each of the following situations and identify as CHEMICAL or PHYSICAL, then explain why.

1. A bridge is rusting __________________WHY?

2. Ice cube melting __________________WHY?

3. Mix baking soda and Vinegar __________________WHY?

4. Cooking a hamburger __________________WHY?

5. Solid Air Freshener __________________WHY?

6. A pane of glass is shattered __________________WHY?

Academic LabPhysical vs. Chemical Change Lab

CONCLUSION:Explain what a chemical & physical change is and give examples of each. Your audience is third graders. Use complete sentences.

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