Unit 1: Movie Special Effects

Essential Questions How can chemical concepts be used to produce special effects for a movie? How can conclusions be drawn from data and evidence that is collected? How are measurements made? How are significant figures used? What is matter, and how can it be classified?

Chapter Challenge Overview Work with a partner to create a story line and produce special effects based on the chemistry you learn Demonstrate the special effects you create Write a procedure on how your special effect is done Write an explanation on how the special effect works, including the chemistry behind it Due date: Thursday, September 13

Day 1: Elements and Compounds Learning Objectives: Observe a demonstration to see how a compound is decomposed into its 2 elements Perform gas tests to determine their identities Determine chemical formula of a compound Compare the properties of the compound to those of the elements it makes up Practice safe laboratory techniques

Starter Matter is the name for all the “stuff” in the universe. Anything that has mass and takes up space is matter How many different types of matter are there? What makes up matter? Look around and list 10 examples of matter in the classroom Classify your examples as pure substances or mixtures For the ones that are mixtures, what do you think is in them? (What is it that makes them up?) Time: 15 minutes

Activity One: Video

Activity Two: Decomposition of H2O2 That video showed the breakdown of water into the two elements that it makes up: 2H2O O2 + 2H2 We do not have the equipment to do this decomposition reaction, but we can do it with hydrogen peroxide (H2O2) What do you think H2O2will break down into? We will test for hydrogen and oxygen gas Time: 30 minutes

Activity Three: Demonstration In the test tube, there is zinc (Zn) and hydrochloric acid (HCl) What gas do you think will be produced from a chemical reaction between these materials? Zn + HCl ??? Time: 15 minutes

Activity Four: Closing Activity What are some other compounds that you know? Can you write the names and formula for them? What does the chemical formula tell us about the make up of the compound? Can all compounds be decomposed into their elements? What techniques can be used to do this? What are elements made of? What are atoms made of? Time: 15 minutes

Homework Page 633 “Chemistry to Go” #1-3 Preparing for the chapter challenge Due on Wednesday

Day 2: States of Matter Learning Objectives: Describe the particles in different phases of matter, and as the material changes phases Observe the change in state of water Graph the phase changes of water Describe the phase changes with regard to transfer of energy Characterize materials by their unique phase-change temperatures Practice safe laboratory techniques

Starter

Starter Draw 3 circles to represent each state of matter In the circles, draw what you think the particles look like in a solid, liquid and gas Describe what the particles do in each of the three phases Time: 10 minutes

Activity One: The Heating Curve for Water We will investigate how the temperature changes when ice melts (pg. 634-635) What is a phase change? What will happen to the system as we increase the temperature? Will the temperature not change at any point? What will happen to the energy in the system as temperature is added? How will we record the data collected? Time: 45 minutes

Activity One (cont’d) Procedure: In your group, set up your lab equipment like the picture You will record the temperature every 1 minute. Make sure the thermometer does not touch the bottom of the beaker Continue to collect the temperature until the water is boiling and you get the same temperature 5 times in a row.

Activity One (cont’d) Data Collecting Create this table to write down your observations Data Table 1: Temperature Change of Ice Time (min) Temperature (C) Observations 1 2 3

Activity Two: Interpreting Our Data Lab Report: CERR Model What to include? Claim Evidence Reasoning Rebuttal Due Date: August 28

Activity Three: Phase Changes In your group, create a visual representation of phase changes Include: The different phases, and what the changes are called Is heat energy transferred to or away from the object? Is it endothermic or exothermic? What happens to the particles in the substance? Time: 15 minutes

Homework Read “Chem Talk”, starting on page 638 Lab report (due August 28) “Chemistry to Go”, pg. 642-643 #1, 2, 3, 5, 7 (due Friday)

Day 3: Solutions, Suspensions & Colloids Learning Objectives: Explore different ways materials can be mixed together to form new materials Test some materials to see what kind of mixtures they are Determine why certain kinds of mixtures are manufactured for commercial use in particular ways Use different methods to separate mixtures

Starter Lots of different things happen when materials are mixed together Each mixture has its own characteristics Is it easier to separate milk from coffee, or milk from cereal? Explain. There are many different ways to separate mixtures. List and describe as many as you can. Time: 10 minutes

Activity One: Different Types of Mixtures We will be looking at different types of mixtures (pg. 644-645), describing them and seeing if they separate with a filter. Copy down this table in your notebook. Make a title for it No Materials mixed with water Observation before Observation after Kind? Filter? 1 Water 2 Sugar 3 Milk 4 CuSO4 5 Olive oil 6 Soil

Activity One (Cont’d) Follow steps 1-4, completing your data table as you go. What other materials will you need to get from the lab bench? Instead of a laser, use a flashlight Time: 50 minutes

Activity Two: Interpreting Results Get together with 2 or 3 other people who were not in your investigation group Share your findings with each other, and discuss any discrepancies Time: 15 minutes

Closing Activity Classify the following as a suspension, colloid, or solution. Explain Orange juice (with pulp), apple juice, hot coffee, milk, olive oil How could you separate the following? Sugar dissolved in water Alcohol dissolved in water Sand mixed in water Classify the mixtures we looked at today as heterogeneous or homogeneous. Time: 15 minutes

Homework Read Chem Talk starting on pg. 646 Chemistry to Go, pg. 648 #1, 2, 4 (optional) Preparing for chapter challenge

Day 4: Properties of Matter Learning Objectives: Compare properties of matter between different substances Change the properties of substances Determine what a composite is and where it is useful in real-life applications

Starter