School Improvement in Maryland

Using the State Curriculum: Science, Grade 5

Skills and Processes | Earth/Space | Life | Chemistry | Physics | Environmental

Lesson Seeds: The lesson seeds are ideas for the indicator/objective that can be used to build a lesson. Lesson seeds are not meant to be all-inclusive, nor are they substitutes for instruction.

Standard 4.0 Chemistry

Topic C. States of Matter

Indicator 1. Provide evidence from investigations to identify the processes that can be used to change materials from one state of matter to another.

Objective a. Observe and describe the changes heating and cooling cause to the different states in which water exists.

  • Heating causes: ice (solid) to melt forming liquid water; liquid water to evaporate forming water vapor (gas).
  • Cooling causes: liquid water to freeze forming ice (solid); water vapor (gas) to form liquid water.

Activity

CHANGE OF STATE
Put several spoonfuls of crushed ice in a glass beaker.
Determine the temperature of the ice and record.
Place the beaker of ice on a hot plate.
Measure and record the temperature every 3 minutes.
Continue to heat the water until it boils and becomes water vapor.
Construct a line graph (temperature vs. time) using the data collected.
Label changes in state of matter.
Discuss the results.

[Water is a solid (ice) at 0° C, and remains at 0° C as the ice melts. After the ice has completely changed to a liquid, the temperature begins to rise, and at 100° C the water begins to boil and starts to turn into gas (vapor).

Students should adhere to all local school system safety guidelines during investigations.

/instruction/lessons/science/grade5/xml/4C1a.xml
Resources for Objective 4.C.1.a:
Clarifications | LESSON SEEDS | Public Release Items |