8th grade Chemical Interactions Assignments
- Instructor
- Teacher Hang Becker
- Term
- 2019-2020 School Year
- Description
-
Chemistry is the systematic unveiling of the nature of matter--- its properties, composition, and structure--- and the energy dynamics that accompany matter transformations. Chemistry is also the intellectual process of uncovering the nature of matter and energy that contributes to an ever-expanding body of chemical knowledge.Our unit, Chemical Interactions, is broken up into 10 investigations, with multiple parts and focus questions.This course supports the following principles set forth in A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas.Science and Engineering Practices1. Asking questions and defining problems2. Developing and using models3. Planning and carrying out investigations4. Analyzing and interpreting data5. Using mathematics and computational thinking6. Constructing explanations7. Engaging in argument from evidence8. Obtaining, evaluating, and communicating informationCrosscutting Concepts- Patterns- Cause and effect: Mechanism and explanation- Scale, proportion, and quantity- Systems and system models- Energy and matter: Flows, cycles, and conservation- Structure and function- Stability and change
Upcoming Assignments
No upcoming assignments.
Past Assignments
Due:
Assignment
WEEK 36: 6/01- 6/06 *SCHOOL CLOSURE plans
Chemical Interactions
Focus Question: How can you make 10-minute ice cream? and How do atoms combine to make new substances?
Students will take what they have learned about solutions and phase changes to make 10-minute ice cream. Then students will review chemical formulas as symbolic representations for substances and learn that the fundamental building blocks of substances are atoms. Chemical bonds are introduced as the attractive forces holding particles together.
IMPORTANT DATE:
- Zoom Meetings at 10 am Thursday, June 4
Due:
Assignment
WEEK 35: 5/25- 5/30 *SCHOOL CLOSURE plans
Chemical Interactions
Focus Question: How can you freeze water at home without using the plug-in freezer?
Students will consider freezing water, and when they discover ice is not cold enough, they will add salt to affect the temperature. Students will use what they have learned about engineering a soundproof box to design a freezer at home.
IMPORTANT DATES:
- NB sheet 55 (AOL) due by 9 am Friday, May 29
- Zoom Meetings at 10 am Tuesday & Thursday, May 26 & 28
Due:
Assignment
WEEK 34: 5/18- 5/23 *SCHOOL CLOSURE plans
Chemical Interactions
Focus Question: What happens at the particle level when a substance melts? and What is the relationship between melting and freezing?
Students will heat three materials and will observe the results. They will observe the change of state from liquid to solid and discover that the materials melt at different temperatures. In the second session, students will use candles to increase the energy transferred to wax and sugar. They will observe that both wax and sugar change from solid to liquid when heated with a candle, and return to solid when the flame is removed. Students will use this experience to extend their understanding of melting and to reinforce the idea that different substances melt and freeze and different temperatures.
IMPORTANT DATES:
- NB sheet 44 (AFL) by 5 pm Friday, Friday May 22
- Zoom Meetings at 10 am Tuesday & Thursday, May 19 & 21
Due:
Assignment
WEEK 33: 5/11- 5/16 *SCHOOL CLOSURE plans
Chemical Interactions
Focus Question: What is the difference between dissolving and melting? and Do all substances form solutions in water?
Students will begin by expressing their understanding of dissolving and melting. Then they will observe what happens to four candy-coated chocolate pieces in four different environments: hot water, hot air, cold water, and cold air. Based on their observations of the different outcomes, they will generate definitions for the terms dissolving and melting. In the second investigation, students will make two aqueous mixtures to test solubility.
IMPORTANT DATES:
- FQ Answer (AFL) by 9 am Wednesday, May 13
- Zoom Meetings at 10 am Tuesday & Thursday, May 12 & 14
Due:
Assignment
WEEKS 26 & 27: 3/17- 3/31 *SCHOOL CLOSURE plans
Chemical Interactions
Focus Question: What is frequency?
Students will measure their pulse under different circumstances. They will use the pulse rate to calculate frequency and consider repeating patterns.
Due:
Assignment
WEEK 26: 3/16- 3/21
Chemical Interactions
Focus Question: How can you reduce energy transfer to or from a sample of water?
Students will use their understanding of energy transfer to face an engineering problem: how to build a container that keeps hot liquids hot and cold liquids cold. They will test materials for their insulating properties in preparation for the design challenge.
IMPORTANT DATES:
- Investigation 6 quiz (AFL)- group A: 3/20 and group B: 3/23
- IAR testing 3/24- 3/26
Due:
Assignment
WEEK 25: 3/9-3/14
Chemical Interactions
Students will take the Illinois Science Assessment this week.
IMPORTANT DATES:
- Investigation 6 quiz (AFL)- group A: 3/20 and group B: 3/23
- Investigation 7 quiz (AFL)- group A: 3/30 and group B: 3/31
Due:
Assignment
WEEK 24: 3/02-3/07
Chemical Interactions
Focus Question: How is heat measured?
Students will be introduced to the calorie as a unit of energy transfer. They will conduct a water-mixing investigation and use the results to calculate the number of calories transferred from hot to cold water during the interaction. The numbers should be equal, supporting the notion of conservation of energy. Group A will take a quiz on Monday and then both groups will move onto prepare for the investigation test by completing a study guide. They will be assessed by the end of the week.
IMPORTANT DATES:
- Investigation 5 quiz (AFL)- group A: 3/3
- Investigation 5 Study Guide (AFL)- group A: 3/4 and group B: 3/3
- Investigation 5 test (AOL) and Journal Check (AFL)- group A: 3/6 and group B: 3/5
- Illinois Science Assessment (ISA)- 3/9- 3/12
Due:
Assignment
WEEK 23: 2/24-2/28
Chemical Interactions
Focus Question: How does energy transfer from one substance to another?
Students will explore the concept of energy transfer as a consequence of collisions between particles. They will engage in group discussions, water animations, and participate in structured reading. They will be introduced to temperature as the average kinetic energy.
IMPORTANT DATES:
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
- Investigation 5 quiz (AFL)- group A: 3/2 and group B: 3/3
- Investigation 5 Study Guide (AFL)- group A: 3/4 and group B: 3/5
- Investigation 5 test (AOL) and Journal Check (AFL)- group A: 3/6 and group B: 3/9
Due:
Assignment
WEEK 22: 2/17-2/21
Chemical Interactions
Focus Question: If two equal volumes of hot and cold water are mixed, what will the final temperature be?
Students will begin the week by taking a test on Investigation 4- Kinetic Energy, and then we will move onto the next investigation on Energy Transfer. Students will call on their knowledge of mixing hot and cold liquids to predict he final temperature of a mixture of equal masses of hot and cold water. They will conduct the activity and use their results to determine an algorithm for calculating final temperatures.
IMPORTANT DATES:
- Investigation 4 assessment (AOL)- group A: 2/19 and group B: 2/18
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
- Investigation 5 quiz (AFL)- group A: 3/2 and group B: 3/3
- Investigation 5 Study Guide (AFL)- group A: 3/4 and group B: 3/5
- Investigation 5 test (AOL) and Journal Check (AFL)- group A: 3/6 and group B: 3/9
Due:
Assignment
WEEK 21: 2/10-2/15
Chemical Interactions
Focus Question: What happens to particles in a sample of liquid when the liquid is heated and cooled?
Students will make water thermometers with a glass bottle, plastic tube, and rubber stopper. They will place the water-filled system in cold water, then hot water. They will observe the contraction and expansion of liquid water in response to cooling and heating. Students will apply their understanding of kinetic theory to explain liquid expansion, including how a thermometer works.
IMPORTANT DATES:
- Investigation 4 assessment (AFL)- group A: 2/10 and group B: 2/7
- Investigation 4 study guide (AFL)- group A: 2/14 and group B: 2/13
- Investigation 4 assessment (AOL)- group A: 2/19 and group B: 2/18
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
Due:
Assignment
WEEK 20: 2/2-2/8
Chemical Interactions
Focus Question: What happens to particles in a sample of air when the air is heated and cooled?
After reviewing the properties and composition of gas, students will work to find out what happens to air when it is heated and cooled. Students will observe that air expands when heated and contracts when cooled. Thy will use the kinetic particulate model to explain expansion and contraction.
IMPORTANT DATES:
- Investigation 4 assessment (AFL)- group A: 2/10 and group B: 2/7
- Investigation 4 study guide (AFL)- group A: 2/14 and group B: 2/13
- Investigation 4 assessment (AOL)- group A: 2/19 and group B: 2/18
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
Due:
Assignment
WEEK 19: 1/27-1/31
Chemical Interactions
Focus Question: What is the relationship between particles in matter?
Students will refine their model of air (gas) as independent particles with significantly large distances between them. They will use representations to show the changes in particle density during compression and expansion.
Students will have a study guide and take their end of investigation assessment.
IMPORTANT DATES:
- Investigation 3 study guide (AFL)- group A: 1/28 and group B: 1/27
- Investigation 3 assessment (AOL) and journal check (AFL)- group A: 1/30 and group B: 1/29
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
Due:
Assignment
WEEK 18: 1/20-1/24
Chemical Interactions
Focus Question: Is air matter? Does air have mass and take up space?
Students will learn about one of the main elements that make up the gas produced in a reaction. Students will investigate air to determine whether or not it qualifies as matter. They will use syringes to discover that air can be compressed and expanded, in addition, develop explanations for their observations in developing a particulate model for matter.
IMPORTANT DATES:
- Investigation 3 quiz (AFL)- group A: 1/24 and group B: 1/23
- Investigation 3 study guide (AFL)- group A: 1/28 and group B: 1/27
- Investigation 3 assessment (AOL) and journal check (AFL)- group A: 1/30 and group B: 1/29
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
Due:
Assignment
WEEK 17: 1/13-1/17
Chemical Interactions
Focus Question: How can the gas produced in a chemical reaction be studied?
In the next investigation, Particles, students will observe the inflation of a balloon and conduct controlled experiments. The experiment includes making a stock solution of acid, measuring solids carefully, and measuring the volume of gas produced during the reaction.
IMPORTANT DATES:
- Investigation 2 assessment (AOL) and Journal Check (AFL)- group A: 1/13
- Investigation 3 quiz (AFL)- group A: 1/24 and group B: 1/23
- Investigation 3 study guide (AFL)- group A: 1/28 and group B: 1/27
- Investigation 3 assessment (AOL) and journal check (AFL)- group A: 1/30 and group B: 1/29
- Chicago River Student Congress (extra credit)- 2/29 8 am- 1 pm
Due:
Assignment
WEEKS 15 & 16: 1/2-1/10
Chemical Interactions
Focus Question: What makes up all substances on Earth?
When students return from the winter break, they will use their scientific and engineering skills to build a water clock.
Then during the full week of school, students will study the list of ingredients in consumer products to discover what elements are present. They will determine the total number of elements, the most common elements, and the number of metallic elements in the products.
IMPORTANT DATES:
- Study Guide (AFL)- group A: 1/9 and group B: 1/8
- Investigation 2 assessment (AOL) and Journal Check (AFL)- group A: 1/13 and 1/10
- Investigation 3 quiz (AFL)- group A: 1/24 and group B: 1/23
- Investigation 3 study guide (AFL)- group A: 1/28 and group B: 1/27
- Investigation 3 assessment (AOL) and journal check (AFL)- group A: 1/30 and group B: 1/29
Due:
Assignment
WEEK 14: 12/16-12/20
Chemical Interactions
Focus Question: What is the periodic table of the elements?
Students will learn that an element is a basic substance that cannot be reduced to simpler substances in chemical interactions. They will become familiar with the names and symbols of the 90 naturally occurring elements by studying the periodic table of the elements.
IMPORTANT DATES:
- Discourse (AFL)- group A: 12/18 and group B: 12/19
- Study Guide (AFL)- group A: 1/9 and group B: 1/8
- Investigation 2 assessment (AOL) and Journal Check (AFL)- group A: 1/13 and 1/10
Due:
Assignment
WEEK 13: 12/9-12/14
Chemical Interactions
Focus Question: How can we find out what two substances are in the mystery mixture?
In part 2 of this investigation, students will observe a set of nine white solids, two of which are the substances in the mystery mixture. They will develop a plan for testing pairs of substances to discover which two are in the mystery mixture. The fizzing that results from the mixing of seven different two-substance combinations is introduced as evidence of a chemical reaction. Close observation of the seven reactions and the residues in the reaction wells after evaporation provides compelling evidence for the identity of the mystery mixture.
IMPORTANT DATES:
- Investigation 1 assessment (AOL)- group A: 12/12 and group B: 12/13
- Discourse (AFL)- group A: 12/18 and group B: 12/19
- Study Guide (AFL)- group A: 1/9 and group B: 1/8
- Investigation 2 assessment (AOL) and Journal Check (AFL)- group A: 1/13 and 1/10
Due:
Assignment
WEEK 12: 12/02-12/07
Chemical Interactions
Focus Question: How can we find out what two substances are in the mystery mixture?
Students will begin their study of chemistry by observing a mystery mixture of two white, solid substances. After recording the physical characteristics of the dry mixture, they will add water and record their observations of the results.
IMPORTANT DATES:
- Investigation 1 assessment (AOL)- group A: 12/12 and group B: 12/13
- Discourse (AFL)- group A: 12/18 and group B: 12/19
- Study Guide (AFL)- group A: 1/9 and group B: 1/8
- Investigation 2 assessment (AOL) and Journal Check (AFL)- group A: 1/13 and 1/10