Classroom Resources: Quantitative Chemistry
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Density, Identifying an Unknown, Measurements, Scientific Notation, Error Analysis  Middle School
Lab: A Chemistry Calculation Challenge
Students will apply their knowledge to solve four challenging chemistrybased calculation problems involving mass, volume, density, and number of molecules.

Accuracy, Measurements, Significant Figures, Accuracy, Error Analysis, Error Analysis  Middle School, High School
Lab: Accuracy, Precision, and Error in Measurements
In this lab, students make measurements of length and width using four measuring tools. They will measure the same object using measuring sticks of different precision. They will observe that the exactness of a measurement is limited by the precision of the measuring instrument.

Dimensional Analysis, Measurements  Middle School, High School
Activity: Dimensional Analysis with Notecards
In this activity, students will practice dimensional analysis using premade conversion factors on notecards to demonstrate the importance of canceling units to solve problems.

Dimensional Analysis, Measurements  Middle School, High School
Animation: Measurement Animation
In this animation, students review the fundamentals of measurement in length, mass, and volume. The animation also provides opportunities for students to practice unit conversions to confirm their understanding. **This video has no audio**

Dimensional Analysis, Measurements  Middle School, High School
Activity: Animation Activity: Measurement
In this animation, students will become familiar with three forms of measurement, including length, mass and volume. Various units of measurement will be presented for comparison, and several conversion calculations will be demonstrated using dimensional analysis.

Observations, Physical Properties, Chemical Change, Physical Change, Dimensional Analysis, Measurements, Matter, Chemical Properties, Mixtures  Middle School, High School
Activity: Cupcake Conversions, Bench to Bakery
This activity will help to reinforce the importance of scientific measurement and apply it to the introduction of chemical reactions. Using an example of baking a single batch of cupcakes, students will plan for a larger production scale in a commercial bakery. This will help to introduce the idea of producing a reaction at the lab bench and converting it to mass production. In addition this activity investigates how chemistry is used in everyday life and challenges students to consider potentials errors that may occur when completing chemical reactions in the kitchen.

Physical Change, Dimensional Analysis, Measurements, Matter, Mixtures  Middle School, High School
Activity: Cooking with Conversions
In this activity, students will be given a common homemade recipe for German chocolate cake with measurements in English units. They will be asked to convert the English ingredients list to metric units through scientific calculations. Students will also be asked to identify the ingredients as solid, liquid or gas. While reviewing the cooking procedures, students will classify certain steps as containing compounds or mixtures as well as identify whether chemical or physical changes are taking place. The culinary chemistry involved in this lesson should be introduced throughout the activity.

Density, Identifying an Unknown, Measurements  Elementary School, Middle School
Demonstration: Household Densities
In this demonstration, students will make predictions about various household materials and whether or not each will sink or float when placed in water. Data will be collected and then used to calculate the density value of each item. Finally students will analyze the relationship between the density value and the observed outcome, and use their knowledge to identify unknown materials.

Review, Dimensional Analysis, Measurements  Middle School, High School
Activity: Dimensional Analysis Show Down
In this activity students will work cooperatively to solve conversion based problems using dimensional analysis. Students are required to independently determine an answer for each question and be able explain their method of solving with their peers. This activity is designed to allow students to work at their own pace, and for students to take on a teaching role by communicating their understanding with their peers.

Observations, History, Conservation of Mass, Measurements, SI Units  Middle School, High School
Activity: Lavoisier Video Questions
In this activity, students will watch a video about Antoine Lavoisier, who many consider to be the father of modern chemistry. They will answer questions as they learn about oxygen, hydrogen, and the first proposal of the Law of the Conservation of Mass.

Physical Properties, History, Measurements, Temperature, SI Units, Accuracy  Elementary School, Middle School, High School
Activity: Temperature Guys Video Questions
In this activity, students will watch a video and answer questions about how both the thermometer and the concept of temperature evolved over time

Conservation of Mass, Measurements  Middle School, High School
Lab: Mass of a Gas
In this lab, students will perform a simple chemical reaction in a closed system to produce a small amount of gas. They will collect mass measurements for the reactants and the products in order to demonstrate the conservation of mass during the reaction. They will also release the produced gas from the closed system in order to verify that gasses have mass.

Observations, Density, Measurements  Middle School, High School
Lab: Penny Boats
In this lab, students will explore Archimedes’ Principle and how it relates to density. Each student will be given a piece of aluminum foil and asked to design and build a boat that will hold as many pennies as possible without sinking when placed in water.

Accuracy, Measurements, Significant Figures, SI Units  Middle School, High School
Activity: Simulation Activity: Measuring Volume
In this simulation, students will participate in a 10 question quiz. The quiz questions are each made of two parts, with the first part requiring the student to analyze an image of a graduated cylinder in order to report an accurate measurement. Students must use the correct number of digits based on the markings presented on the cylinder when reporting the measurement. In the second portion of the question the students will determine the uncertainty value of the graduated cylinder, again by analyzing its markings. The simulation is made up of several different sizes of graduated cylinders, each containing unique markings, so students will be challenged to analyze each individually.

Density, Measurements  Elementary School, Middle School
Lab: Weight Just a Minute!
In this lab, students will learn how volume and mass affect density as they make comparisons and calculations.

Mixtures, Interdisciplinary, Concentration, Measurements, Scientific Method  Middle School, High School
Lab: Effect of Salt Concentration on Plants
In this lab, students will observe how salt concentration can affect the structure of a potato tuber.

Density, Accuracy, Measurements, Significant Figures, Accuracy, Error Analysis, Error Analysis  Middle School, High School
Lab: Significant Figures and Lab Data
In this lesson, students will use laboratory equipment of different precision to collect data for several different metals, and then use the data to calculate the density of each. They will then compare their calculated densities to accepted values and determine the combination of equipment that leads to the most accurate calculation of density.

Density, Physical Properties, Measurements, Matter  Elementary School, Middle School, High School
Animation: Density Animation
"In this animation, students will visualize density on the particulate level. There are opportunities to make qualitative and quantitative comparisons between substances. **This video has no audio**"

Observations, History, Conservation of Mass, Measurements, SI Units  Elementary School, Middle School, High School
Video: Antoine Lavoisier Video
This video tells the story of Antoine Lavoisier who many consider to be the father or modern chemistry. Lavoisier discovered oxygen and hydrogen and first proposed the Law of Conservation of Mass.

Observations, Density, Temperature, Gas Laws, Density, Pressure, Measurements, Matter, Volume, Graphing  High School, Middle School
Lab: Pressure Bottle
In this lab, students determine the relationship between volume and pressure of a gas and its temperature and address the common misconception that air does not have mass or density.

Density, Review, Accuracy, Dimensional Analysis, Measurements, Accuracy, Experimental Design, Error Analysis  High School, Middle School
Lab: Bowling Ball—Will it Sink or Float in Water?
In this lab, students will find the density of a bowling ball to determine whether it will sink or float in water.

Separating Mixtures, Percent Composition, Interdisciplinary, Measurements, Mixtures  Middle School
Lab: Metallic Breakfast
In this lab, students will separate iron filings from ironfortified breakfast cereals. Students will use the recorded data to conduct percent composition calculations.

Observations, Chemical Change, Physical Change, Conservation of Mass, Conservation of Mass, Chemical Change, Measurements  High School, Middle School
Lab: Mass & Change
In this lab, students will use unified particle pictures of solid, liquid, and gas to explain the law of conservation of mass after carrying out various experiments.