Introduction to Density Day 3
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The document contains questions related to density, mass, volume, and formulas used to calculate these values. It asks about the units used to measure and identify different physical properties. It provides examples of chemical symbols, densities in g/cm3, and physical attributes of various substances like aluminum, copper, gold, ice, and seawater. It includes formulas for calculating density, mass, and volume and asks students to identify which formula to use given values.
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The document provides a quick review of density concepts including:
- The metric unit for mass is the kilogram. Mass of a substance depends on its composition and volume.
- Pieces of the same substance with different volumes will have different masses, while pieces with the same volume but different substances can have different densities.
- Density is identified by a unit of kg/m3 and measures the mass per unit volume of a substance. Substances with the same volume but different compositions can have different densities.
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Effects of acids on metals
When iron nails are exposed to vinegar (an acid) over the course of three days, the following changes take place:
1) After one day, bubbles begin to form on the surface of the iron nails as a chemical reaction occurs between the iron and the acetic acid in the vinegar.
2) After two days, more bubbles form and the nails begin to rust as iron reacts with oxygen in the air and vinegar.
3) After three days, the nails are extensively corroded and rusted due to the oxidation of iron promoted by the acidic vinegar environment.
Material and its properties
Material and its properties 2
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The document discusses the mole as a fundamental concept in chemistry. It defines the mole as representing 6.022 x 10^23 particles, such as atoms or molecules. Using the mole allows chemists to work with quantities on a human scale rather than at the scale of individual atoms or molecules. The mole and molar mass, which represents the mass of one mole of a substance, enable conversions between masses and numbers of particles through dimensional analysis.
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Stoichiometry is the study of quantitative relationships between reactants and products in chemical reactions. It is based on the law of conservation of mass, which states that mass is conserved in chemical reactions. The balanced chemical equation for the reaction of iron and oxygen shows that four moles of iron react with three moles of oxygen to produce two moles of iron(III) oxide. While the chemical equation does not show masses, the mole quantities can be converted to masses by using molar masses. The total mass of reactants must equal the total mass of products, according to the law of conservation of mass.
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The document provides a quick review of density concepts including:
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- Pieces of the same substance with different volumes will have different masses, while pieces with the same volume but different substances can have different densities.
- Density is identified by a unit of kg/m3 and measures the mass per unit volume of a substance. Substances with the same volume but different compositions can have different densities.
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The document discusses reaction rates and kinetics. It defines reaction rate and states that the concentration of reactants is proportional to the rate of reaction. It also defines the rate constant and rate law formula. A catalyst affects the reaction rate by lowering the activation energy, increasing the frequency of collisions, and increasing the probability of successful collisions. Enzymes are biological catalysts and the collision theory states that for a reaction to occur, reactant particles must collide with adequate energy.
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When iron nails are exposed to vinegar (an acid) over the course of three days, the following changes take place:
1) After one day, bubbles begin to form on the surface of the iron nails as a chemical reaction occurs between the iron and the acetic acid in the vinegar.
2) After two days, more bubbles form and the nails begin to rust as iron reacts with oxygen in the air and vinegar.
3) After three days, the nails are extensively corroded and rusted due to the oxidation of iron promoted by the acidic vinegar environment.
Material and its properties
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Like share盧comment and don't forget to subscribe
Boost your learning with Fundoo Tutor:- You will get
1- Experienced and Qualified Teachers from all over India
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4- Trusted by many Users all Over India
3-Start learning and Growing With Fundoo Tutor
Visit us here: https://fundootutor.com/
Book Your Demo class from here also: https://lnkd.in/gsJkvH5
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The document discusses the mole as a fundamental concept in chemistry. It defines the mole as representing 6.022 x 10^23 particles, such as atoms or molecules. Using the mole allows chemists to work with quantities on a human scale rather than at the scale of individual atoms or molecules. The mole and molar mass, which represents the mass of one mole of a substance, enable conversions between masses and numbers of particles through dimensional analysis.
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Stoichiometry is the study of quantitative relationships between reactants and products in chemical reactions. It is based on the law of conservation of mass, which states that mass is conserved in chemical reactions. The balanced chemical equation for the reaction of iron and oxygen shows that four moles of iron react with three moles of oxygen to produce two moles of iron(III) oxide. While the chemical equation does not show masses, the mole quantities can be converted to masses by using molar masses. The total mass of reactants must equal the total mass of products, according to the law of conservation of mass.
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Foundations in Chemistry: Basics of qualitative and quantitative measurements
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CSI Day 3
This document provides instructions for a chemistry lab involving testing unknown powder samples. Students are asked to:
1) Perform a series of tests (sensory observations, solubility, iodine, vinegar, heat) on 5 known powder samples and record results.
2) Use the evidence from the tests to determine the identities of 2 unknown powders in a sample bag.
3) Explain their reasoning for the identifications and turn in their lab sheet. Proper lab clean-up and binder/note submission are also required.
CSI Day 1
This document provides instructions for a chemistry lab involving testing mystery powders. It outlines the materials and supplies needed, safety procedures, testing procedures for senses, solubility, iodine, and vinegar reactions, data table for recording observations, and cleanup responsibilities. Lab partners are to identify mixtures of two powders based on physical and chemical properties.
A Last Look Day 3
This document provides information about upcoming science assignments and tests. It lists materials needed for an experiment involving mass and includes review questions covering topics like the pH scale, chemical bonds, and states of matter. It also notes that a "Last Look" assignment is due on Friday to review for the final exam, which will be on June 1st and 4th, with period 3 taking it on the 5th. Students are reminded to complete Binder Check #4 by the start of class on June 1st and to take 1/2 page of notes on what to know for the chemistry final.
A Last Look - Day 2
The document provides a schedule and information for an upcoming chemistry final exam. It lists the dates of exam parts and assignments that are due, including completing a last review on June 1st, submitting binder check #4 on June 1st, and taking exam part 2 for period 3 only on June 5th. It also provides review questions to study for the exam.
A Last Look
This document provides a schedule and instructions for chemistry students for the final weeks of the semester. It outlines assignments and exam dates, including completing a study guide called "A Last Look" to be turned in on June 1st, taking the chemistry final exam on June 4th and 5th, and having their binders checked for organization. Students are instructed to use provided resources and ask questions if unclear on assignment details.
Mass, Volume and Density Labs Day 2
The document lists materials and assignments needed for an upcoming chemistry class and lab. Students need a pencil, volume and mass worksheets picked up yesterday, and a progress notice signed and due tomorrow. The class will have an online component and notes on the chemistry final. On Monday there will be a written test and a binder check. The document provides cleaning instructions for the lab and lists supplies needed for upcoming labs on volume, mass, density, and other chemistry topics. Assignments include turning in progress notices, completing volume and mass labs, and taking the final exam.
Mass, volume and density labs day 1
Today's class will involve completing volume and mass labs worksheets and updating an online log. Students should bring a pencil, the volume and mass labs worksheets stapled together, and their log #4. On Friday, students will complete an online component and take 1/2 page of notes on what to know for the chemistry final. Their binder will be checked on Monday for test #2 part 2. Labs must be cleaned up properly or 10 points will be deducted, including cleaning sinks, counters, tables, and organizing supplies. Students may work with a partner for extra credit by stapling their packets together. Various labs will be completed involving measurements, formulas, and chemical reactions. Signed progress notices are due Thursday and the
Mass, Volume and Density Labs
Today's class will involve completing volume and mass labs worksheets and updating an online log. Students should bring a pencil, the volume and mass labs worksheets stapled together, and their log #4. On Friday, students will complete an online component and take 1/2 page of notes on what to know for the chemistry final. Their binder will be checked on Monday for test #2 part 2. Labs must be cleaned up properly or 10 points will be deducted, including cleaning sinks, counters, tables, and organizing supplies. The volume and mass lab is due this Friday.
Mass, Volume and Density Labs --Day 1
Today's class will involve completing volume and mass labs worksheets and updating an online log. Students should bring a pencil, the volume and mass labs worksheets stapled together, and their log book. On Friday, students will work on an online component and take notes for the chemistry final. The following Monday will include a written test and submitting their binder for check #4. Proper lab cleanup is required, and supplies should be organized and restocked as needed. The volume and mass lab is due this Friday along with progress notices, and the final exam and binder check will take place on June 1st.
Mass, Volume and Density Labs -Day 1
Today's chemistry class will involve completing volume and mass lab worksheets, updating an online log, and taking a test. Students need a pencil, the volume and mass lab worksheets stapled together, and their logbook. On Friday, students will take notes for the chemistry final exam. The class will have a binder check on Monday for test #2 part 2. Labs must be cleaned up properly and testing equipment organized. Students can work with a partner for extra credit by stapling their lab packets together. The volume and mass lab is due this Friday.
Chemistry of Living Things Booklet
Students will create a flip-book foldable explaining the chemistry connection for living things using pencil, colored pencils, markers, 3 pieces of white printer paper, and the textbook and interactive reader for resources. The flip-book will include sections on the bonding of carbon, types of carbon bonds, elements in living things, compounds in living things, and more compounds. It is due on Friday and students have class time every day except Thursday to work on it.
Final Cooperative Project 2012 day 5
The students need their pencil and semester cooperative project that was picked up last Friday. They must check that their names are on the poster and model and staple their packet of papers, which includes assignments on the periodic table, Bohr model, Lewis dot structures, Cornell notes, a current event article and summary, a rough draft of their poster, and a compound model. Their entire project is due by the end of the class period.
Periodic Table Project 2012
The document provides information about upcoming assignments and projects for a chemistry class. It details requirements for a periodic table project where students must create a poster and packet about an element family. It also describes retake tests being offered and materials needed for class that day, including a semester cooperative project and acids and bases assignments.
Alien Juice Bar
The document provides information about tests, assignments, and activities that are due. It lists materials needed for an alien juice bar activity including colored pencils and a bookshelf. It schedules test retakes on specific dates and times. It also includes conclusion questions about acids, bases, the pH scale, and neutralizing substances.
Acids and Bases Day 5.2012
This document provides information and instructions for students regarding an upcoming chemistry class. It lists materials needed including pencils, colored pencils, and assignments on acids and bases. It announces test corrections and retakes due the next day. It provides guidance for students to review mistakes on a past quiz. It also includes review questions on acids, bases, pH scale, and neutralizing acids safely.
Acids & Bases Day 3
This document provides information about acids and bases including:
1) The pH scale measures hydronium (H3O+) ions in a solution and ranges from 0-14, with acids from 0-6.9 and bases from 7.1-14.
2) Bromothymol blue turns green in the presence of an acid and blue in the presence of a base.
3) Living things depend on a steady pH in their environment, and acid rain can damage trees, lettuce, and cars.
Acids & Bases Day 2b
This document provides information about acids and bases including:
1) It defines an ion and explains that pH measures the concentration of hydrogen ions (H+) in a solution.
2) Acids have a pH below 7 on the pH scale, bases have a pH above 7, and neutral substances have a pH of 7.
3) It instructs students to complete various acid and base activities and assignments that are due.
Acids & Bases Day 2
This document provides information about acids and bases including:
- The pH scale ranges from 0-14, with acids ranging from 0-6.9, bases from 7.1-14, and neutral being 7.
- pH stands for potential hydrogen ions and measures the concentration of H+ ions in a solution.
- In an acidic solution, hydrogen ions are present. The number 7 indicates a neutral substance on the pH scale.
- The document instructs the reader to complete virtual lab activities on acids and bases using bromothymol blue as an indicator.
Acids & Bases Day 1a
The document provides instructions for various classroom assignments and activities related to acids and bases:
- Students are asked to line up in a horseshoe pattern and complete the front and back of page 1 of their Acids & Bases lab sheets.
- They are also instructed to log into an online learning platform and complete the daily assignments, opening a PowerPoint for the day's lesson.
- The document explains that most liquids will be either acids or bases, using a pH scale from 0-14 to measure how acidic or basic they are, with distilled water being neutral at 7. Acids are between 0-6.9 and bases 7.1-14 on the scale.
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Introduction to Density Day 3
- 5. Quick Review Oral Presenters: 5. If you have a unit label of hg/mL what kind of number do you have? Managers: 6. What type of number is 2.7 cc? Timer Designers: 7. A substance was dropped into a G.S. holding 300mL rose to 428 mL. What type of problem is this? Materials Managers: 8. What units identify DENSITY numbers?
- 6. Quick Review Oral Presenters: 9. A cube measures 7.9 cm on each side. What type of number is 7.9 cm ? Managers: 10. If you have two pieces of Zinc with the same volume will their masses be the same or different? Why? Timer Designers: 11. What units identify VOLUME numbers? Materials Managers: 12. If the volume is different for two pieces of Lithium will the mass be different? Why?
- 7. Quick Review Oral Presenters: 13. You have a number with cg unit and a number with g/cc units . What formula do you use to find the missing variable? Managers: 14. If you have two pieces of Zinc with the same volume will their DENSITY be the same or different? Why? Timer Designers: 15. You have MASS and DENSITY . What function? Materials Managers: 16. You have DENSITY and VOLUME . What function?
- 8. Quick Review Whole Group: 17. Two pieces of Gold have the same mass . Is their DENSITY the same or different? Why? 18. If you have two pieces of Sulfur with the different volumes will their DENSITY be the same or different? Why? 19. You have 27 kg/m3 and 52 kg. What formula do you use? 20. You have 38.6 liters and 52 grams per liters . What formula do you use?
- 9. Answer in complete sentences : 8. How is Density useful in identifying substances? Explain why a substance, such as gold, cut into different sizes, would have the same density.
- 11. The following formulas are for finding different variables in density problems. Density Formulas m m v D = = = D v x m D v
- 12. Sample Chemical Symbol Density g/cm3 Physical Attribute Aluminum Al 2.7 Not Heavy Copper Cu 8.9 Orange Methane CH 4 .668 Strong Odor Gold Au 19.3 Yellow Ice H 2 0 .917 Crystalline Iron Fe 7.8 Rusts Lead Pb 11.3 Very Heavy Seawater H 2 0 + 1.4 Heterogeneous Wood (average value) Cellulose 0.8 Can Float