CAST Prep Grade 7 MS-PS1-2

CAST Prep Grade 7
MS-PS1-2

By Patrick Cochrane

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.

Word Cloud

What comes to mind when you hear the term chemical reaction?

The substance(s) formed as a result of a chemical reaction

Products

A substance that takes part in and undergoes change during a reaction.

Reactants

Important Vocabulary

A process where one or more substances are transformed into new substances with different properties.

Chemical Reaction

A transformation that alters the form or appearance of a substance, but not its chemical composition.

Physical Reaction

Important Vocabulary

The temperature at which a solid changes into a liquid.

Melting Point

The mass of a substance per unit volume

Density

Important Vocabulary

The specific temperature at which a liquid transitions into a gas or vapor.

Boiling Point

Important Vocabulary

Chemical Reacitons

Performance Task

Your teacher conducted two different demonstrations in class that started with copper chloride (CuCl₂). The teacher provided you with the following data tables to help you determine if a physical or chemical reaction occurred during the demonstrations.

Open Ended

Based on the patterns (similarities and differences) in the properties of the reactants and products in the table above, is this a physical or chemical reaction? Cite specific evidence from multiple properties in the data table to support your answer.

Open Ended

Based on the patterns (similarities and differences) in the properties of the reactants and products in the table above, is this a physical or chemical reaction? Cite specific evidence from multiple properties in the table to support your answer.

Open Ended

After examining all three properties of all of the substances in Demonstrations 1 and 2:

a. What patterns (similarities and differences) do you observe in the reactants and products of substances in physical reactions?

b. What patterns (similarities and differences) do you observe in the reactants and products of substances in chemical reactions?

Open Ended

Using the data from Demonstrations 1 and 2, describe the difference between a physical and chemical reaction in terms of the rearrangement of atoms and molecules.