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Chemical Formulas—Student Laboratory Kit

By: The Flinn Staff

Item #: AP4569

Price: $52.50

In Stock.

Flinn has developed the Chemical Formulas Chemistry Laboratory Kit to help students understand why atoms combine in certain ratios and how to write formulas for compounds formed. The kit guides students through challenging formulas.

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Product Details

Writing formulas can be a real challenge for many students. Flinn has developed a kit that will help your students understand why atoms combine in certain ratios and how to write formulas for the compounds formed. Students experimentally determine the chemical formulas for various ionic compounds by performing three laboratory experiments. In each of the first two investigations, students combine various ratios of two solutions and observe which ratio produces the most precipitate. Students then determine the correct formula for the new compound. The third investigation provides an opportunity for higher-level, open-ended thinking in which students design their own experiment. Students first write reactions to decide which chemicals to combine and how much they need. Students predict possible results and then perform their own experiments.

Detailed Teacher Notes and reproducible student handouts include easy-to-follow lab instructions, sample data, answers to questions and in-depth background information. All chemicals and specialized equipment are provided. Graph sheets, a common ion chart and a solubility rules chart are also included.

Complete for 30 students working in pairs.

Specifications

Materials Included in Kit: 
Copper(II) chloride, 0.1 M, 250 mL
Iron(III) nitrate solution, 0.1 M, 250 mL
Sodium hydroxide solution, 0.1 M, 250 mL
Sodium phosphate, 0.1 M, 250 mL
Culture tubes, disposable, 10 mm x 75 mm, 250
Pipet, Beral-type, thin stem, 60
Wood splints, 60


Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking
Constructing explanations and designing solutions
Engaging in argument from evidence
Obtaining, evaluation, and communicating information

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Cause and effect
Patterns
Scale, proportion, and quantity
Energy and matter
Stability and change

Performance Expectations

MS-PS1-1. Develop models to describe the atomic composition of simple molecules and extended structures.
MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-PS1-5. Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
HS-PS1-1. Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
HS-PS1-3. Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
HS-PS1-6. Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.
HS-PS1-7. Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.