## Reflection: Developing a Conceptual Understanding Specific Heat - Section 2: Engage

Frayer models are a great tool to help students master important vocabulary terms.  I find that they are especially helpful for my English Language Learners who tend to have a more difficult time with science vocabulary.

• Although Frayer models are a great tool they are time consuming so I only use them for really important terms.
• For this unit I choose to have students perform Frayer models for the terms exothermic and endothermic.  I do so because these are two very important terms AND students often confuse the two with each other.
• I have students record the definition, facts/characteristics, examples, and a picture/model for each of the two terms.
• Students often have an easy time with the definition and examples (which they take straight from their notes), but have more difficulty with facts/characteristics and a picture/model.
• To help students with the facts/characteristics I tell them to come up with some things that help them know that a reaction is exothermic or endothermic.
• For example they may say that exothermic reactions will make the surroundings feel hot, or if a phase change is exothermic the particles release energy.
• To help students with the picture/model I tell them to draw what a reaction looks like, what the system/surrounding looks like, or to draw an energy diagram for the reaction.
• For example students may draw a fire for an exothermic reaction or draw energy going from the system to the surroundings.
• Here is an example of one student's work.  Notice how they added in the energy diagrams for models after we discussed as a class.

Developing a Conceptual Understanding: Frayer Models for Vocabulary

# Specific Heat

Unit 5: Unit 6: Energy
Lesson 6 of 9

## Big Idea: Heat capacity is the amount of energy required to raise the temperature of a substance and can be determined through experiments and calculations.

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3 teachers like this lesson
Standards:
Subject(s):
Science, Chemistry, Exothermic Reactions, specific heat, heat capacity, calorimetry, heat, temperature
95 minutes

### Rachel Meisner

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