Lesson 140: Water changing states

Objective

I can tell how water can change between ice, liquid water, and steam. I can say what happens when water gets colder or warmer using simple words like freeze and melt.

Materials

• Small ice cube on a plate (or picture of ice)
• Clear cup with cold water
• Picture or simple drawing of steam from a kettle or hot drink
• Two labels or sticky notes: cold and warm
• Pencil and notebook or scrap paper

Mini-lesson — How water changes

Guided Practice — Follow water on its journey

You will look at ice, liquid water, and steam (or a picture of steam) and talk about how water changes when it gets colder or warmer.

1. Look at the ice: Touch the ice cube carefully. How does it feel? (Cold, hard). Say, "Ice is solid water."
2. Watch it melt: Leave the ice on a plate for a few minutes. What happens? Drops of water appear. Say, "The ice melts and turns into liquid water."
3. Look at the water: Gently tilt the plate or cup. The water moves and can be poured. Say, "Water is a liquid."
4. Think about steam: With an adult, think of a time you saw steam (from a kettle, shower, or hot food). Say, "Steam is water as a gas in the air."
5. Draw three pictures: On your paper, draw ice, water in a cup, and steam above a mug. Under each, write "solid", "liquid", or "gas".
6. Use the tracing pad: Choose words like ice, water, steam, freeze, or melt and trace them. Say each word as you write it.
7. Finish with a sentence: Write one sentence such as "Ice melts into water" or "Steam is water in the air".

Tracing Pad

Lines Primary lines Baseline only Grid Blank Trace (none) ice water steam solid liquid gas freeze melt cold warm vapour change

Pen Clear

Tip: As you trace, say a full idea like "Ice is solid water" or "Steam is water as a gas".

Practice 1 — Sort water states

Decide if water in each example is a solid, a liquid, or a gas.

1. Draw three boxes on your page and label them: "Solid water", "Liquid water", and "Water as gas".
2. Think of examples, such as: ice in a drink, snow on the ground, water in a bottle, rain, steam from a kettle, foggy bathroom mirror.
3. Write or draw each example in the box you think fits. For example, "ice in a drink" goes in "Solid water", and "rain" goes in "Liquid water".
4. Talk with an adult about your choices. Use the words freeze, melt, warm, and cold in your talk.

Practice 2 — A day with water

Think about different times in the day when you see water in different states.

• On your paper, draw three small scenes: morning, afternoon, and evening.
• In one scene, show ice (for example, ice in a drink or frost on a window). Label it "solid".
• In another scene, show liquid water (for example, water in a glass or rain). Label it "liquid".
• In the last scene, show steam or water vapour (for example, steam from a hot drink or a steamy bathroom). Label it "gas".
• Write one short sentence under your drawings, such as: "Water can be solid, liquid, or gas during my day."

Practice 3 — Freeze and melt story

Tell a short story about a piece of ice that changes state.

1. Draw a small ice cube in the freezer. Then draw the same ice cube melting in a cup. Finally, draw steam rising from a warm mug.
2. Use arrows to show the order: "ice" → "water" → "steam".
3. Write one or two sentences, such as: "The ice cube melts into water when it gets warm. The water can turn into steam when it gets very hot."
4. Share your story with someone and tell them how water changed in your pictures.

Quick Check — Water changing states

Answer each question about ice, liquid water, and steam. Think about what happens when water gets colder or warmer.

Assessment (parent/teacher)

Exit ticket (student)