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Science Crime Busters
FLOW CHART Water SolubleInsoluble Bubbles Cloudy/odor NaCl, NaHCO 3, CaSO 4, CaCO 3, NaC 2 H 3 O 2, sugar, sand, Vitamin C (ascorbic acid), cornstarch, flour, yeast, gelatin, Alka Seltzer Swells Go On GelatinAlka Seltzer Yeast
Gelatin Go Back
Yeast Go Back
KI 3 Observe Color Before Adding KI 3, or Observe Mixture Dissolution Insoluble NothingDeep Blue Add Vinegar (Acid) BubblesNo BubblesOff WhitePure White Brown/Tan/ Yellowish Flour Corn StarchLimestone Plaster of Paris
Sand Go On
Flour Cornstarch Go On
Flour Cornstarch Go Back
No Bubbles Bubbles CaSO4 CaCO3
pH paper Soluble/ Clear Solution BaseNeutral Add Vinegar (acid) BubblesNo Bubbles Acid Observe Crystals CubicHexagonal SugarSalt Bicarbonate of soda Sodium Acetate Vitamin C
Sodium Acetate Sodium Bicarbonate Go Back
Sugar Go On
Sodium Chloride Go On
Appearance Metals Yellow-orangeSilveryGray or Black Silvery or Gray Cu Magnet None Attraction Fe HCl bubblesnone Zn Use density test or tin more malleable than aluminum
Jack Cairns Director Delaware Science Resource Center Co-Director Science Olympiad email@example.com
Group 1 Chemical #1 Copper Sulfate CuSO 4 *The copper sulfate is in a solution of water Chemical #2 Ammonia NH 3 *The ammonia is in a solution of water.
Chemical Reaction Lab. Chemoluminescent Demo At the start: Luminol solution: clear blue liquid Hydrogen peroxide: clear liquid What we saw:
Chemical Reaction Lab. Bioluminescent Demo At the start: Luminol solution: clear blue liquid Hydrogen peroxide: clear liquid What we saw: Glowing.
2/24/12 OBJECTIVE: Students will identify physical and chemical properties. WARM-UP: Identify 5 common elements. HOMEWORK: None.
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CHAPTER 2 Matter and Change. B. Physical Properties 1. can be observed without changing the chemical composition 2. Examples Color Melting point
Forensics. Forensics and Safety Safety! Safety! Safety! Safety! Safety! Bring and wear lab coat/apron that cover the knees, OSHA approved indirectly vented.
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Clues To Chemical Changes With Examples. Significant Release of Heat Reaction of Calcium Chloride and Water CaCl 2 +H 2 O Ca(OH) 2 +2HCl.
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Chemical Reactions Combination Reactions, Single Replacement Reactions, Combustion Reactions, Decomposition Reactions, Double Displacement Reactions, Precipitation.
Pure Substances and Mixtures. A substance that contains only one kind of particle is called a pure substance (diamond, aluminum foil, table sugar) A mixture.
What Happened in Activity 3? Solid Aluminum was added to a solution of Copper (II) chloride Al (s) + CuCl 2(aq) → ? Name a physical change that occurred???
Catalyst – November 44-32, Write the SKELETON EQUATION for: Liquid carbon disulfide reacts with oxygen gas, producing carbon dioxide gas and sulfur.
The Mystery Powder Challenge Background Information 1. Define chemical change – 2. Define physical change – 3. Describe visible signs of a chemical change.
Bridging the Gaps Between the Three Worlds of Chemistry William C. Deese, Ph.D. Louisiana Tech University
Acids and Bases Chapter 32. Acids An acid is a substance that turns blue litmus paper red. Acids have a sour sharp taste. Everyday AcidsLab Acids Lemon.
Describing Matter. Matter is anything that takes up space and has mass. “Stuff” that makes up everything in the universe.
Solutions Chapter 13 & 14. Solution A uniform mixture that may contain solids, liquids, or gases Also called a homogeneous mixture Composed of a.
Preparation of Salts By SK Chan. Preparing sodium chloride Add NaOH to HCl slowly to get a neutral solution. (How?) Concentrate the solution by evaporation.
Acids are electrolytes that: þ Produce H + (as H 3 O + ) ions in water – always listed first in the formula þ Turn blue litmus red þ Taste sour þ Corrode.
Acids and Bases SNC2D. Some Properties of Acids Sour taste Water soluble Very reactive Conduct electricity Can act as a catalyst Corrosive.
CRIME BUSTERS MICHIGAN SCIENCE OLYMPIAD COACHES WORKSHOP AT MSU SATURDAY, DECEMBER 5, 2015 PRESENTED BY: MIKE REED, MICHIGAN SCIENCE OLYMPIAD.
ACIDS, BASES, & SALTS ACIDS Contain hydrogen ions, H + also called hydronium ions, H 3 O + Taste sour (remember not to taste chemicals as a rule) Dangerous.
Acids, Alkalis and Indicators Prepared by Mdm RY Leow The Chinese High School.
Salt, baking soda, water, sugar oxygen, iron, hydrogen, gold Matter Mixture Pure Substance ElementsCompounds Heterogeneous Mixture Homogeneous Mixture.
Properties of Matter Matter: anything that has mass and takes up space Substance: matter that has a uniform and unchanging composition. An element is.
Qualitative Analysis Chemistry 12 AP. What is Qualitative Chemical Analysis? It is a branch of chemistry that deals with the identification of elements.
Mixtures and Solutions Final Assessment. 1. Which of these is a method of separating solutions? A. hand separation B. filtering C. screening D. evaporation.
Carbon Dioxide In Solution The Baking Soda Example.
Cause and Effect The Chemistry of Leavening. Essential Question How do time, temperature, ingredients, mixing and cooking methods affect quick breads?
Chemical Reactions. In chemical reactions, one or more substances change into different substances. For example: combustion.
Red Cabbage PH Indicator GÜNEŞ KANAR 10C-70. Preview information; Red cabbage contains a pigment molecule called flavin (an anthocyanin). This water-soluble.
Alka Seltzer Lab. Observations: / Alka Seltzer: smells like vinegar, powdery, chalkish, crumbly, triangular, black dots, white, smooth on top, delicate,
Properties of Acids and Bases Properties Common Uses Neutralization and Salts Indicators.
Practical Analytical Chemistry (1) Practical (5) Faculty of Pharmacy Department of Pharmaceutical Chemistry.
“Baggie Blast” Activity OBJECTIVE: DIFFERENTIATE BETWEEN EXOTHERMIC AND ENDOTHERMIC REACTIONS, AS WELL AS BETWEEN ACIDIC AND BASIC SOLUTIONS.
Chemical Changes. What is a chemical change? chemical change - matter changes into a new substance through a chemical reaction. The animation to the right.
In your group, travel from station to station and write down observations about the mystery material. – Think about whether these observations could be.
Bell-ringer: Draw This Triangle 1. An object has a mass of 468 g and a volume of 15 cm3. What is its density? 2. The density of an unknown mass is 3.5.
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They Are Everywhere. Common Acids Hydrochloric AcidHClStomach Acid Ascorbic AcidC6H8O6C6H8O6 Vitamin C Phosphoric AcidH 3 PO 4 Fertilizers and Detergents.
Acid-Base Reactions A “Basic” Introduction. Acids Ionize in aqueous solutions to form H + ions Memorize the 7 strong acids (completely ionize, never.
: Chemical Reactions Review: Jeopardy Game. $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400.
Ionic Equations & Reactions. Equations Molecular equations – show the complete chemical formulas. Does not indicate ionic character Complete ionic equation.
IX.Salts and Hydrolysis Salts are simply ionic compounds. Salts can be formed by: 1.A metal reacting with a non-metal. 2 Na (s) + Cl 2(g) 2 NaCl.
Halloween Colors 1 Halloween Colors Clues for a Chemical Change.
16.1 Introducing bases and alkalis A BASE is a compound which reacts with an acid to form a salt and water only. Examples of base: Metal oxides Ammonia.
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