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Grade 2 · lesson 1 of 4

Name water-state changes

Name water-state changes using supplied evidence and a solved model.

About 12 minutes, plus any extended practice

Download the grade pack

Supplied materials

  • For younger learners, an adult may read each direction aloud; pointing, drawing and spoken explanations count as responses.
  • Paper, drawing space or a browser document.
  • Reference card A: ice becomes liquid water. Reference card B: liquid water becomes ice.
  • Assessment case 1: Which scientific label fits the specifically described step or feature? Supplied case: Ice cube becomes a puddle.
  • Assessment case 2: Which scientific label fits the specifically described step or feature? Supplied case: Puddle becomes ice.
  • Assessment case 3: Which scientific label fits the specifically described step or feature? Supplied case: Liquid leaves as invisible vapor.
  • Assessment case 4: Which scientific label fits the specifically described step or feature? Supplied case: Vapor forms droplets on a cool surface.
  • Assessment case 5: Which scientific label fits the specifically described step or feature? Supplied case: Snow melts into liquid.
  • Assessment case 6: Which scientific label fits the specifically described step or feature? Supplied case: Water becomes vapor from a lake.

Learn the idea

Water may be solid ice, liquid water or invisible gaseous water vapor. A visible cloud contains tiny droplets or ice, not merely invisible vapor.

Melting means ice becomes liquid water. Freezing means liquid water becomes ice. Evaporation means liquid water becomes water vapor. Condensation means water vapor becomes liquid droplets.

For melting, look for the clue “ice becomes liquid water.” For freezing, look for “liquid water becomes ice.” More than one process can happen in a real situation. Answer about the one described in this question.

  1. Read or listen to the four science words and what each means. Say how the first two differ.
  2. Choose two of the short cases. Point to the clue that helps you choose a science word for each one. You may draw or say your answer.
  3. Answer each practice question. Say which clue helped you, then check the explanation.
  4. Use the extra task to make two examples that show different science words. Draw or say what makes each one fit.
Worked example

See the method in action

Worked reference-card problem: a card states “ice becomes liquid water”; a second states “liquid water becomes ice.” The first fits melting and the second fits freezing. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case.

Your turn

Check your reasoning

Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.

Helpful tips
  • Use the feature “ice becomes liquid water” to justify melting; do not sort by the name alone.
  • Distinguish freezing (liquid water becomes ice) from a different process occurring in the same situation.
Which scientific label fits the specifically described step or feature? Supplied case: Ice cube becomes a puddle.

Feedback appears here after you check. This is practice, not a graded school assessment.

See the answer and explanation

melting

The answer is melting. In the notes, it means “ice becomes liquid water.” Water may be solid ice, liquid water or invisible gaseous water vapor. A visible cloud contains tiny droplets or ice, not merely invisible vapor.

Take it further

Create one new case showing melting and one showing freezing. Expected: the first explicitly shows “ice becomes liquid water”; the second explicitly shows “liquid water becomes ice.” Explain the distinction by drawing, speaking or writing. A label without a matching feature is incomplete.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.

More practice: try new cases

Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.

More practice: try new cases
1. Which scientific label fits the specifically described step or feature? Supplied case: Puddle becomes ice.
Need a hint?
  • Look for the described feature: liquid water becomes ice.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.
2. Which scientific label fits the specifically described step or feature? Supplied case: Liquid leaves as invisible vapor.
Need a hint?
  • Look for the described feature: liquid water becomes water vapor.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.
3. Which scientific label fits the specifically described step or feature? Supplied case: Vapor forms droplets on a cool surface.
Need a hint?
  • Look for the described feature: water vapor becomes liquid droplets.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.

Your choices are temporary. Feedback appears after you check all the answers.

Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.

Check the subject sources

These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.