Mississippi Science CHE.10.4
The Standard
- CHE.10
- Enrichment: Students will understand that energy is exchanged or transformed in all chemical reactions.
Enrichment: Use mathematical and computational thinking to solve problems involving heat flow and temperature changes, using known values of specific heat and latent heat of phase change
2026 Mississippi College- and Career-Readiness Standards for Science · Thermochemistry (Enrichment)
Teacher's field guide
What This Standard Means
What Students Need to Do
- Calculate heat gained or lost from mass, specific heat, and temperature change. Use latent heat when a substance melts or freezes. Add the heat from each step when a problem includes both melting and warming.
What Mastery Looks Like
- Students choose the right calculation for a temperature change or a phase change. They can find the total heat needed to melt ice and then warm the water, label their answer in joules, and explain why ice stays at 0°C while melting.
Common Misconceptions
- Students may use the temperature-change formula while ice is melting, even though its temperature stays at 0°C. They may treat heat released during freezing as heat absorbed, or use grams with a value given per kilogram.
How to Assess It
- Exit ticket: Calculate the heat needed to melt 20 g of 0°C ice, then warm the water to 10°C. Use 334 J/g for melting and 4.18 J/(g·°C) for warming; show both steps.
Lesson moves
Ways to Teach It
Put 20 g of melting ice into 100 g of 40°C water in an insulated cup, measure final temperature, and calculate heat lost by water.
Ask, 'Why does ice stay at 0°C while it melts?' Have pairs sketch particles and explain where the incoming heat goes.
Give pairs four cards with masses, temperatures, and heat values; have them choose the right calculation and find the heat for each card.
Use an icy sidewalk scenario to calculate the heat needed to melt 1 kg of ice, given a latent heat of 334 J/g.
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Printable CHE.10.4 Worksheet
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Related Standards
- PHY.3.7
Enrichment: Use mathematical and computational analysis to analyze problems involving specific heat and heat capacity.
- CHE.11.3
Enrichment: Use mathematical and computational thinking to calculate an equilibrium constant expression for a reaction.
- CHE.10.1
Enrichment: Construct explanations to explain how temperature and heat flow in terms of the motion of molecules (or atoms).
- CHE.10.2
Enrichment: Classify chemical reactions and phase changes as exothermic or endothermic based on enthalpy values. Use a graphical representation to illustrate th...
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