Osmosis and Diffusion Gummy Bear Lab.

Slides:

Advertisements

Similar presentations

Title: Conservation of Mass

Advertisements

Chemical Reactions And Equations

What is a Chemical Reaction?

(See Chapter 10.1) Chemical Reactions. Using pp of A Natural Approach to Chemistry, Answer as many of the following questions as you can in the.

Conservation of Matter. Chemical Reactions Happen all of the time Happen naturally or can be man made Can be physical or chemical PHYSICAL CHEMICAL.

Chemical Reactions.

The Law of Conservation of Matter. We’ve talked about changes in matter… The evaporation of a puddle of water Rust forming on a metal fence PHYSICAL CHEMICAL.

Chapter 7 Chemical Reactions.

CHAPTER THREE CHEMICAL EQUATIONS & REACTION STOICHIOMETRY Goals Chemical Equations Calculations Based on Chemical Equations The Limiting Reactant Concept.

I can identify the products and reactants in a chemical reaction. I can state the law of conservation of matter. I can determine the number of each atom.

What is the Law of Conservation of Mass?

Balancing Chemical Equations. Why do we need to Balance Chemical Equations? The Law of Conservation of Mass The # of atoms must stay the same on both.

CHEMICAL REACTIONS.

Today’s Agenda…. Bellringer: Turn to page 601 and read about changes of state. Edit Bellringers from yesterday Review changes and reactions.

Chemical Reactions. Chemical Change How do you know if a chemical change has taken place? How do you know if a chemical change has taken place? All chemical.

Section 3.3 Stoichiometry and Chemical Reactions.

Balancing Equations I can demonstrate how mass is conserved during a chemical change.

2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Section 1 Section 2 Section 1 Section.

Chemistry Concepts Review Ideas that will help you understand photosynthesis.

Balancing equations Unit 2 Chemistry. Writing Chemical Equations Products: are the chemicals that are made or produced in the reaction. Reactants: are.

ICP 12/18/12 Review of Chemical Reactions. Warmup For 1-4 write endothermic or exothermic: 1)Gives off heat 2)Takes in heat 3)Reactants + heat  Products.

Fe iron Pb lead Au gold C carbon Co cobalt K potassium Ne neon N nitrogen.

Test 2 Review. Test Format Part I: – Lab set up – Follow directions, answer question, apply information Part II: – Written/computer test – 31 questions.

Chemical Reactions Balancing and classifying.. Balanced Equations  Notice that the number of mercury atoms is the same on both sides of the equation.

QOTD Conservation…… sentences.

Which of These do not belong Burning match Rusting bike Curing cement Mixing baking soda and vinegar.

Chemical Changes Monroe What are the parts to a chemical formula? Coefficient Atoms Subscripts.

Chapter 7 Reactions. Chemical Changes Substances react and form a new substance. Reactants go in. Products come out. Reactants Products Represented by.

Balancing equations. Law of Conservation of Mass This law states that matter is never created or destroyed during a chemical reaction but is instead just.

Chemical Ideas 1.2 Balancing equations. Balanced chemical equations Tell us the reactants and products in a reaction, and the relevant amounts involved.

BALANCING EQUATIONS. CHEMICAL EQUATIONS Chemical Equation: Represents, with symbols and formulas, the identities and relative molecular or molar amounts.

Chemical Reactions. Physical and Chemical Changes A is any change that does not alter the identity of a substance physical change Matter can change in.

Balancing Act Atoms are not CREATED or DESTROYED during a chemical reaction. This is the LAW OF CONSERVATION OF MASS. There must be the SAME number of.

It’s the Law Lab - Grading. Introduction: Describe the law of conservation of mass. (1pt) Matter can’t be creted or destroyed Same # of atoms on both.

JEOPARDY! React!SolutionsMore solutions Acids and Bases Matter

9 th Grade Science Chapter 24 Section 1. Chemical Changes  Chemical change: Atoms change bonds and form new materials  Chemical reaction: Process of.

Chemical Reactions. Chemical Equation a short way to show chemical reactions, using symbols instead of words. C + O CO Na + Cl NaCl.

Chemical Reactions. Review: Chemical vs Physical Change Physical Change: when the matter stays the same, but there is a change in size, shape, or appearance.

Chapter 6 Chemical Reactions.

FEB DO NOW: QUIET FOR 5! Objective: SWBAT… - explain the ways chemicals can react in terms of particles (atoms and molecules) HW: 1.Law of Conservation.

BALANCING CHEMICAL EQUATIONS H 2 + O 2 --> H 2 O.

WHAT IS A CHEMICAL REACTION? A chemical reaction is what happens when there is a chemical change. A chemical change is when a new substance is formed or.

Law of Conservation of Mass. Think about the following question: –If you burned a log in the fireplace, would the mass of the products (smoke, ashes,

Balancing Chemical Equations What is a chemical equation? There are 2 sides to a chemical equation. The Reactants – what is being combined (the arrow points.

Law of Conservation of Matter Test Review What have you learned this past week?

The Volcano Experiment. Chemical Formula Represents a substance: – Ex: Water (H2O)

Chemical Reactions The process in which one or more substances are converted into new substances with different chemical and physical properties.

Balancing Chemical Equations. Chemical Equations Review  Chemical equations need to be balanced due to the Law of Conservation of Mass.  This law states.

Standard 5a: Chemical reactions change the molecules Subscripts and coefficients 23.

WARM UP 1.List 6 things that a chemical equation tells you about a chemical reaction.

Balancing Equations Notes Copy everything in the red font.

Chapter 4 Chemical Reactions.

Unit 4 – Chemical Equations & Reactions

Warm- Up Describe a simple demonstration you could do to show a chemical reaction has taken place. What can you do to change the rate of this reaction.

Do Now Complete Do Now sheet Answer:

Warm-Up (11/03) Answer the following questions, and explain in a complete sentence why each answer is correct. What happens during diffusion? A. Particles.

Why did the gummy bears change?

Do Now, Agenda Do not sit at a lab table for now

Chemical Reactions A chemical reaction is a chemical change that produces a new substance Involves breaking old bonds and forming new bonds. The chemical.

Conservation of Mass.

What happens to the mass when a solution is formed?

Stoichiometry based on the law of conservation of mass

JEOPARDY! React! Solutions More solutions

How do cells take in food when they don’t have hands?

Topic: Chemical Reactions

The left side of the equation contains the reactants, which interact to form the new substances, or products. The products are on the right side.

Balancing Chemical Equations

Chemical Balancing The Law of Conservation of Mass:

Conservation of Matter and Mass

Presentation transcript:

Osmosis and Diffusion Gummy Bear Lab

Diffusion SOLUTE PARTICLES move from HIGH concentration to LOW concentration. LOW CONCENTRATION HIGH CONCENTRATION

Osmosis Diffusion of WATER across a membrane. Water follows the solute particles. “SOLUTE SUCKS!”

Gummy Bears, Day 1 A gummy bear, full of SUGAR SOLUTE, is placed in water. Where does the water want to go? To the solute! The solute “sucks” the water towards it.

Water follows solute!

So now your gummy looks like this: After sitting in a glass of water Normal size

Gummy Bears, Day 2 A gummy bear, full of water and sugar solute, is placed in a cup of fresh water. What happens? Since the gummy still contains more solute (sugar) inside, the water does not flow in or out of the gummy bear.

Gummy Bear, Day 2 A gummy bear, full of water and sugar, is placed in a cup full of concentrated salt water. Where does the water want to go? Since the salt water was much more concentrated, the water now flows from the gummy bear to the water. “SOLUTE SUCKS!”

Water will go where there is more concentrated solute! “SOLUTE SUCKS!”

After sitting in concentrated salt water: He has lost all of his excess water to the high salt concentration in the outside water!

Law of Conservation of Mass Matter or Mass cannot be created, lost, or destroyed. The reactants = the products This is why we must balance equations!

Lab Station #1- Baking soda + Vinegar Substance Mass Vinegar (reactant) 11.0g Baking soda (reactant) + 2.5g Theoretical mass of products= =13.5g Solid baking soda + vinegar after reacting (total product) 13.0g How much was lost as a gas???? 13.5-13.0=0.5g (amount of product escaped as a gas!!)

Lab Station #1- What happened? REACTANTS = 13.5g PRODUCTS =13.5g 2.5g Gas (0.5g) Vinegar + Baking Soda (13.0g) Vinegar (11.0g)

Station #2-Balancing Equations All chemical reactions must satisfy, or meet the Law of Conservation of Mass!!! We must balance all of the atoms on each side of the reaction. Example: 2 C2H6(g) + 7 O2(g)  4 CO2(g) + 6 H2O(g)

Mg(s) + O2 (g) → MgO(s)

Fe2O3 + CO  2Fe + CO2