How long do you need to leave an egg in vinegar for it to bounce?

about 48 hours Gently place the egg in the glass and cover it with vinegar. Leave the egg for about 48 hours. You can speed up the process by changing the vinegar halfway through. Remove the egg and gently rub the eggshell away.

learning.sciencemuseumgroup.org.uk - Bouncy egg activity - Science Museum Group Learning

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Eggs are often thought of as delicate and fragile, but this activity will show that with a simple chemical reaction we can give them a bit of bounce.

Printable downloads

SMG Learning Activities - Kitchen Science - Bouncy Egg pdf document, 409 KB Download

Follow these steps…

Gently place the egg in the glass and cover it with vinegar. Leave the egg for about 48 hours. You can speed up the process by changing the vinegar halfway through. Remove the egg and gently rub the eggshell away. Remember, it’s still a raw egg! Carefully drop your egg from a couple of centimetres and watch it bounce!

Think and talk about…

What can you see happening?

Did you see any bubbles appearing?

Why do you think changing the vinegar halfway helps to speed up the process?

Investigate…

What happens if you give the egg a gentle squeeze?

How high can you drop the egg from before it breaks?

What happens if you put the naked egg into other liquids? Try putting it in water or golden syrup and see what happens.

What’s the science?

The vinegar contains ethanoic acid (also known as acetic acid), which reacts with calcium carbonate in the eggshell. One product of the reaction is carbon dioxide gas, which appears as little bubbles forming on the eggshell. Over time, this chemical reaction dissolves away the hard eggshell. We are left with the thin egg membrane with the raw egg inside. This membrane is surprisingly strong, and the egg can be dropped from a small height without damaging it: it can bounce. The membrane is ‘semipermeable’: water can pass through it, but substances dissolved in the water cannot. When the egg is immersed in golden syrup, a strong sugar solution, water leaks

out of it.

Science in your world

Many marine organisms make their shells from calcium carbonate. The ocean is becoming more acidic, as carbon dioxide released from burning fossil fuels dissolves into it. The increasing acidity makes it harder for shells to form, and can even dissolve them away – a major threat to marine ecosystems.

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How many miles is 10 000 steps?

5 miles An average person has a stride length of approximately 2.1 to 2.5 feet. That means that it takes over 2,000 steps to walk one mile and 10,000 steps would be almost 5 miles.

chparks.com - How To Measure Steps | Cleveland Heights Parks & Recreation, OH

How many steps in a mile?

2,000 steps

An average person has a stride length of approximately 2.1 to 2.5 feet. That means that it takes over 2,000 steps to walk one mile and 10,000 steps would be almost 5 miles. A sedentary person may only average 1,000 to 3,000 steps a day. For these people adding steps has many health benefits. Wearing a pedometer or fitness tracker is an easy way to track your steps each day. Start by wearing the pedometer every day for one week. Put it on when you get up in the morning and wear it until bedtime. Record your daily steps in a log or notebook. By the end of the week you will know your average daily steps. You might be surprised how many, or how few, steps you get in each day. A reasonable goal is to increase average daily steps each week by 500 per day until you can easily average 10,000 per day. Example: If you currently average 3000 steps each day, your goal for week one is 3500 each day. Your goal week two is 4000 each day. Continue to increase each week and you should be averaging 10,000 steps by the end of 14 weeks.1

Height Approximate Steps per Mile

4'10"

2,645

4'11"

2,600

5'0"

2,556

5'1" 2,514 5'2" 2,474

5'3" 2,435 5'4" 2,397 5'5" 2,360 5'6" 2,324 5'7" 2,289 5'8" 2,256 5'9" 2,223 5'10" 2,191 5'11" 2,160 6'0" 2,130 6'1" 2,101 6'2" 2,073 6'3" 2,045 6'4" 2,018 6'5" 1,992

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