8th grade Chemical Interactions Assignments
- Instructor
- Teacher Hang Becker
- Term
- 2018-2019 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 32: 4/29- 5/03
Focus Questions: What happens at the particle level during a chemical reaction?
Students will make observations when atmospheric air is pumped through a sample of limewater. Then they will blow exhaled breath through limewater and observe a milky precipitate. Students will use the atom tiles to represent the reactant molecules and rearrange them to make product molecules. They will write a balanced chemical equation for the reaction, using standard conventions.
Then we will begin preparing for our upcoming Sound and Waves REACH Performance Task.
IMPORTANT DATES:
- Guest speaker- both groups: 5/3
Due:
Assignment
WEEK 31: 4/22- 4/26
Focus Questions: How do atoms combine to make new substances?
Students will review chemical formulas as symbolic representations for substances and learn that the fundamental building blocks of substances are atoms. Colored adhesive dots will be introduced as atoms and will be used to construct two-dimensional representations of compounds- molecules and ionic. Chemical bonds will be introduced as the attractive forces holding particles together. Students will make and analyze representations of particles of familiar substances.
IMPORTANT DATES:
- Field trip to Holocaust Museum- 4/22
- Investigation 9 assessment (AFL)- group A: 4/25 and group B: 4/26
- Guest speaker- both groups: 5/3
Due:
Assignment
WEEK 30: 4/8- 4/12
Focus Questions: What is the difference between dissolving and melting? Do all substances form solutions in water? What happens at the particle level when a substance melts? What is the relationship between melting and freezing? How can you freeze water in the classroom? What are all the ways that a substance can change state?
Students will take the assessment for investigations 7 and 8 at the beginning of the week. Then after parent-teacher conferences, they will complete the Illinois Science Assessment.
IMPORTANT DATES:
- Investigation 7 & 8 assessment (AOL)- group A: 4/8 and group B: 4/9
- PARENT-TEACHER CONFERENCES- 4/10
- Illinois Science Assessment- both groups: 4/11
- Field trip to Holocaust Museum- 4/22
- Investigation 9 assessment (AFL)- group A: 4/25 and group B: 4/26
- Guest speaker- both groups: 5/3
Due:
Assignment
WEEK 29: 4/1- 4/4
Focus Questions: What are all the ways that a substance can change state?
Students will investigate all three ordinary states of matter, using a condensation apparatus. Hot water releases water vapor, which condenses in an icy cup, and then freezes to solid water. Students will develop an explanation of the system, using their particle model.
IMPORTANT DATES:
- Investigation 8 assessment (AFL)- group A: 4/1 and group B: 3/29
- Investigation 8 assessment (AOL)- group A: 4/8 and group B: 4/9
Due:
Assignment
WEEK 28: 3/25- 3/29
Focus Questions: How can you freeze water in the classroom?
Students will think about freezing water. When they discover they do not have sufficient materials, they will need to add different substances to the ice to see how they affect its temperature. Students will use this data and their experience to design a "freezer" that will freeze water in the classroom.
IMPORTANT DATES: Please note the change of the AOL assessment dates
- discourse and assessment (AFL x 2)- group B: 3/25
- Investigation 8 assessment (AFL)- group A: 3/28 and group B: 3/29
- Investigation 8 assessment (AOL)- group A: 4/8 and group B: 4/9
Due:
Assignment
WEEK 27: 3/18- 3/22
Focus Questions: 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 observe the results. They will observe change of state and discover that the materials melt at different temperatures. Students will work on a mental model, which includes kinetic energy, energy transfer, and the relationship of particles, to explain what happens at a particle level when a substance changes state from solid to liquid. During the second half of the week, students will use candles to increase the energy transfer to wax and sugar. They will use the observations of this experience to extend their understanding of melting and reinforce the idea that different substances melt and freeze at different temperatures.
IMPORTANT DATES:
-discourse and assessment (AFL x 2)- group A: 3/22 and group B: 3/25
- Investigation 8 assessment (AFL)- group A: 3/28 and group B: 3/29
- Investigation 8 assessment (AOL)- group A: 4/3 and group B: 4/4
Due:
Assignment
WEEK 26: 3/11- 3/15
IAR testing week
8th grade will be taking the Illinois Assessment of Readiness on Monday, Thursday and Friday. Group B will only go to science class on Friday.
Focus Question: Do all substances form solutions in water?
In the second part of this investigation, students will make aqueous mixtures, one with soluble sodium chloride and one with insoluble calcium carbonate. They will compare the two mixtures and attempt to separate them with filters.
IMPORTANT DATES:
-discourse and assessment (AFL x 2)- group A: 3/22 and group B: 3/25
- assessment (AFL)- group A: 3/28 and group B: 3/29
- assessment (AOL)- group A: 4/3 and group B: 4/4
Due:
Assignment
WEEK 25: 3/4- 3/8
Focus Question: What is the difference between dissolving and melting? and Do all substances form solutions in water?
In a quick write, students will express their understanding of the processes of melting and dissolving. They will observe what happens to four candy-coated chocolate pieces in four different environments: hot and dry, cold and dry, hot water and cold water. They will describe the difference outcomes for the candy coating and the chocolate center. Students will generate definitions for melting and dissolving, based on their observations.
In the second part of this investigation, students will make aqueous mixtures, one with soluble sodium chloride and one with insoluble calcium carbonate. They will compare the two mixtures and attempt to separate the with filters.
IMPORTANT DATES:
-discourse and assessment (AFL x 2)- group A: 3/22 and group B: 3/25
- assessment (AFL)- group A: 3/28 and group B: 3/29
- assessment (AOL)- group A: 4/3 and group B: 4/4
Due:
Assignment
WEEK 24: 2/25- 3/1
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 water to cold water during the interaction. The numbers will be equal, supporting the notion of conservation of energy.
Then they will review and use their notes for the investigation assessment.
IMPORTANT DATES:
- discourse, quiz (AFLs)- group A: 2/22 and group B: 2/25
- assessment (AOL)- group A: 2/28 and group B: 3/1
Due:
Assignment
WEEK 23: 2/18- 2/22
Focus Question: If two equal volumes of hot and cold water are mixed, what will the final temperature be?
Students will call on their knowledge of mixing hot and cold liquids to predict the final temperature of a mixture of equal masses of hot and cold water They will conduct the activity and use the results to determine an algorithm for calculating temperature.
IMPORTANT DATES:
- discourse, quiz (AFLs)- group A: 2/22 and group B: 2/25
- assessment (AOL)- group A: 2/28 and group B: 3/1
Due:
Assignment
WEEK 22: 2/11- 2/15
Focus Question: If two equal volumes of hot and cold water are mixed, what will the final temperature be?
Group A will complete a study guide to help prepare for the Investigation 4, Kinetic Energy, assessment, which is on Tuesday and Wednesday, according to the block schedule. All the 8th graders will meet with their 1st grade buddies on Thursday for a Valentine- science activity. And then on Friday, we will begin Investigation 5, Energy Transfer. Here they will conduct an activity and use the results to determine an algorithm for calculating temperature.
IMPORTANT DATES:
- assessment (AOL)- group A: 2/13 and group B: 2/12
- meet 1st grade buddies- both groups 2/14
- discourse, quiz (AFLs)- group A: 2/22 and group B: 2/25
- assessment (AOL)- group A: 2/28 and group B: 3/1
Due:
Assignment
WEEK 21: 2/4- 2/8
Focus Question: What happens to particles in a sample of liquid when the liquid is heated and cooled?
Students will make a water thermometer 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: Please note the changes due to the cold days off from school.
- assessment (AFL)- group A: 2/8 and group B: 2/6
- study guide and journal check (AFLs)- group A: 2/11 and group B: 2/8
- assessment (AOL)- group A: 2/13 and group B: 2/12
Due:
Assignment
WEEK 20: 1/28- 2/1
Focus Question: What happens to particles in a sample of liquid when the liquid is heated and cooled?
Students will make a water thermometer 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:
- assessment (AFL)- group A: 2/5 and group B: 2/4
- study guide and journal check (AFLs)- group A: 2/11 and group B: 2/8
- assessment (AOL)- group A: 2/13 and group B: 2/12
Due:
Assignment
WEEK 19: 1/21- 1/25
I will be out of the building twice out of the four days next week, however students will continue science work with the assigned substitute. Students will partner read a few chapters out of the Life Science textbooks and respond to questions. And students will watch a video on biodiversity and respond to those questions. We will resume our investigation on kinetic energy the week of January 28.
IMPORTANT DATES:
- NO SCHOOL on MLK, Jr Day- 1/21
- assessment (AFL)- group A: 1/23 and group B: 1/24
- assessment (AFL)- group A: 2/5 and group B: 2/4
- study guide and journal check (AFLs)- group A: 2/11 and group B: 2/8
- assessment (AOL)- group A: 2/13 and group B: 2/12
Due:
Assignment
WEEK 18: 1/14- 1/18
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 with empty plastic bottles to find out what happens to air when it is heated and cooled. Students will use the kinetic particulate model to explain expansion and contraction.
IMPORTANT DATES:
- assessment (AOL)- group A: 1/14
- assessment (AFL)- group A: 1/23 and group B: 1/24
- assessment (AFL)- group A: 2/5 and group B: 2/4
- study guide and journal check (AFLs)- group A: 2/11 and group B: 2/8
- assessment (AOL)- group A: 2/13 and group B: 2/12
Due:
Assignment
Week 17: 1/7- 1/11
8th grade 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 distance between them. They will use representations to show the changes in particle density during compression and expansion.
The study guide will follow and group B will take the assessment on Friday.
IMPORTANT DATES:
8th grade assessment (AFL)- group A: 12/19 and group B: 12/18
8th grade study guide (AFL) and journal check (AFL)- group A: 1/10 and group B: 1/9
8th grade assessment (AOL)- group A: 1/14 and group B: 1/11
8th grade assessment (AFL)- group A: 1/23 and group B: 1/24
8th grade assessment (AFL)- group A: 2/5 and group B: 2/4
8th grade study guide (AFL) and journal check (AFL)- 2/11 group A: 2/8