🍬 Sugar and water temperature: the whole packet

🍬 Sugar and water temperature · 2nd–6th grade · 1 day of testing · free · 40 minutes a sitting

My days, if the fair is 14 days away

Count back from your fair day and write in each date. Fewer days than this? The jobs share days, in this order; nothing is skipped.

Dates from my teacher

• My question is due
• Testing starts
• My results table and graph are due
• My board is due

In this packet

1. 🗓️ My project plan
2. 💭 My hypothesis
3. 🧺 Change, measure, keep the same
4. 🪜 My steps
5. 📊 My results
6. 📓 My logbook
7. ✅ My conclusion
8. ✂️ Board titles to cut out
9. 🏅 The judge's questions and my certificate

If I change how warm the water is, then how long a spoon of sugar takes to disappear will ________________, because _____________________________________________

What I think will happen, in my own words:

3 levels × 3 tries at each = 9 tries in all. If anything you keep the same changes, you won't know which change made the difference.

What I need

• 🍬 Sugar
• 🧊 Cold water from the fridge
• 🚰 Water from the tap: left out for an hour, for room temperature
• 🚰 Warm water: warm from the tap, not hot
• 🥛 Clear plastic cups, all the same size: 3
• 🥛 A measuring cup
• 🥄 Measuring spoons
• 🥄 A spoon
• ⏱️ A stopwatch or a kitchen timer

Be safe: ✅ Nothing sharp, hot or small

1. Pour half a cup of fridge-cold water into the first clear cup.
2. Pour half a cup of room-temperature water into the second, and warm tap water into the third.
3. Add one teaspoon of sugar to the cold cup and start the timer.
4. Stir slowly, once a second, until you can't see any sugar.
5. Stop the timer and write the time down.
6. Do the same with the room-temperature cup and the warm cup.
7. Empty the cups and do the whole test two more times.
8. Draw a bar graph: which water made the sugar vanish fastest?

Write each number in your results table the moment you measure it.

I changed: Water   I measured: how long a spoon of sugar takes to disappear (seconds)

MY GRAPH (a bar graph: water along the bottom, seconds up the side)

What I noticed: ______________________________________________

Write something every day you work on it, even the days you only gather things. More days? The three-page logbook prints from peabody.kids/science-fair/templates/logbook.

My hypothesis was ☐ right ☐ partly right ☐ not right.

I know because my numbers show:

What surprised me, or what might have gone wrong (7th and up):

Next time I would test:

Idea: Change a second thing: do the same test with salt, and graph sugar and salt side by side at each temperature.

1. What made you want to ask this question? Say something like: I wanted to know: does sugar dissolve faster in warm water?
2. What did you think would happen, and why? Say something like: I thought changing how warm the water is would change how long a spoon of sugar takes to disappear, and I wrote down why.
3. What did you change, and what did you measure? Say something like: I changed how warm the water is (Cold from the fridge, Room temperature, Warm from the tap) and measured how long a spoon of sugar takes to disappear in seconds.
4. What did you keep the same, and why does that matter? Say something like: I kept the same amount of water and the same spoonful of sugar the same, so only how warm the water is was different.
5. How many times did you test it? Say something like: 3 times at each of my 3 levels, and I found the middle number.
6. What did you find out? Show me in your numbers. Say something like: Look at my table: Cold from the fridge and Warm from the tap gave different numbers, and here's the pattern.
7. Was your hypothesis right? How do you know? Say something like: My numbers show whether I was right, partly right or not, and I can show you where.
8. Did anything go wrong, or surprise you? Say something like: One try was odd, so I did it again and wrote it in my logbook.
9. If you did it again, what would you change or test next? Say something like: I'd change a second thing: do the same test with salt, and graph sugar and salt side by side at each temperature.