Lesson 6 of 6 · Reaction Rates
Lesson⭐ 30 XP🧪 Potion KitchenMeasuring Rate From a Graph
Reaction Rates.
🎯 Your mission
Learn the rule. Then catch nature using it.
⚡ The twist
Color changes mean atoms are rearranging — even if you can't see them.
Mind = Blown
🌈 Every color you see is your brain inventing a translation of light frequencies.
Make a hypothesis first
Before you mix: what color do you think it'll turn?
What You'll Learn
Plot product formed against time and the gradient at any point is the rate at that instant. The curve is steepest at the start, when concentration is highest, and flattens as reactants are used up. Draw a tangent to find the rate at a chosen moment.
Key Words
Tap a word to see its definition.
Steps
Read the explanation above and note the two key terms before you start.
From a supplied gas volume-time data set, plot the curve and draw tangents at 10 s, 30 s and 60 s. Calculate each gradient and explain the trend in terms of falling reactant concentration.
Record what actually happened, including anything that did not match what you expected.
Write a conclusion that answers the question this lesson opened with, and state your uncertainty.
Check Your Understanding
Question 1
1 of 2The rate at a particular instant is found from the gradient of a:
Where you see this in real life
This is happening in your kitchen right now — every time food cooks.
Stretch Challenge
Try this in real life this week.
Find one ingredient in a snack and look up what it does.
For the dinner table
“What's something we cook that mixes things together this way?”
Next Smart Experiment
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Measuring Rate From a Graph
Learn the rule. Then catch nature using it.
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