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Lesson · Grade 2 · Science

Warm, Cool, Cut, Mix: Still the Same Stuff

  • Grade 2
  • Science
  • 53 s
  • British Columbia
  • BC2-SC-06

Four cards fill in one at a time, each showing a change: an ice cube warms and melts into a puddle, melted chocolate cools into a hard bar, a sheet of paper is cut into pieces, and red and blue sand are mixed grain by grain. A question mark on each card turns into the answer (still water, still chocolate, still paper, still sand), and the video ends on the recap that things can look different but still be the same stuff.

Concept: Changing materials by warming, cooling, cutting and mixing

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In one sentence

The question this lesson answers

We can warm, cool, cut or mix things.

Is it still the same stuff afterwards?

Transcript

What the lesson says

We can warm, cool, cut or mix things.

Is it still the same stuff afterwards?

Warm an ice cube, and it melts.

The melted ice is still water.

Cool melted chocolate, and it goes hard.

The hard chocolate is still chocolate.

Cut a sheet of paper into pieces.

Each small piece is still paper.

Mix red sand and blue sand together.

Each tiny grain is still sand.

Things look different, but they are still the same stuff.

Curriculum

Where this fits

British Columbia, Grade 2

Science, Chemistry: physical ways of changing materialsBC2-SC-06

Next: Cooking and Burning: Changes You Cannot Undo

The outcomes and strands follow the British Columbia curriculum.

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