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Camp Canteen: The Hidden Sugar Investigation

Use a camping-trip investigation to model dissolved sugar as particles too small to see and explain evidence from drying and filtering.

Grade 5ScienceInteractive · Printable

Aligned to5-PS1-1

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What’s included

Single worksheet
Auto-graded online
1 NGSS standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 5
Subject: Science
Question types: Multiple choice, Matching, Circle the answer, Sorting, Short answer, Drawing

About this worksheet

What students practice

Students model dissolved sugar as particles too small to see mixed among water particles.
Students use investigation results to evaluate and revise particle models.
Students distinguish visible observations from explanations about unseen particles.

How to use

Read the camp investigation together. Have students use its results to evaluate models, then draw and explain their own model.

Curriculum

NGSS standard covered

5-PS1-1

Model that matter is made of particles too small to be seen.

Preview

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Camp Canteen: The Hidden Sugar Investigation

Use observations to build and revise particle models.

1. Investigate at the Canteen

Read the investigation. Use the observations as evidence for your answers.

The Canteen Crew's Investigation

On a class camping trip, the canteen crew investigated what happens when sugar is mixed with water. Imani kept the notes while classmates handled the supplies. Their teacher provided clean cups, drinking water, sugar, spoons, and shallow dishes. The investigation samples were not for eating or drinking. The crew worked at a level table inside the camp's screened supply shelter.

Step 1: The crew labeled three matching clear cups A, B, and C. They poured 100 milliliters of room-temperature water into each cup. They added 5 grams of the same white sugar to B and 5 grams to C. They added no sugar to A. At first, white grains were visible at the bottoms of B and C.

Step 2: One camper gently stirred A and B for two minutes at the same pace. Cup C stood without stirring for those two minutes. The crew kept the cup size, water amount, water temperature, sugar type, and observation time the same. They recorded whether grains were visible. A looked clear. B looked clear, with no visible grains. C had fewer visible grains than at the start, but some remained on its bottom.

Step 3: The crew then stirred C until its grains were no longer visible. They left B and C standing for another ten minutes. Both still looked clear, with no visible grains. Looking through either cup, the crew could read a large letter printed on a card behind it.

Step 4: With clean measuring spoons, the crew moved 10 milliliters from A into one clean, shallow dish and 10 milliliters from B into a matching dish. They placed both dishes beside each other under a raised mesh cover. No heater was used. After several days, neither dish had visible liquid. The A dish had no visible solid. The B dish had a white solid on its bottom.

Back at school, the crew planned models to explain their notes. A particle model uses symbols to represent pieces of matter too small to see with our eyes. One symbol may stand for many particles. The symbols are not photographs, and their sizes and spaces are not drawn to scale.

Why is comparing A with B useful in this investigation?