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Write a secret message using lemons.
Write a secret message using lemons.
Chemical Engineering
Chemical Engineering
Invisible Ink
Invisible Ink
Materials Needed:
Lemon
Water
Small bowl
Q - Tip or paint brush
Tips:
Tips:
Do this experiment as a team! Have a caregiver help you with the cutting and heat portions.
Do this experiment as a team! Have a caregiver help you with the cutting and heat portions.
You can use bottled lemon juice too!
You can use bottled lemon juice too!
Don't get the paper too wet or it will take much longer to dry.
Don't get the paper too wet or it will take much longer to dry.
A stove will work faster to dry but a lightbulb/lamp will work too.
A stove will work faster to dry but a lightbulb/lamp will work too.
Expand your Knowledge:
Expand your Knowledge:
Does it matter which side of the paper you apply heat to?
Does it matter which side of the paper you apply heat to?
Does the amount (or ratio) of water to lemon juice make any changes? Try it! Add more water or more lemon juice to try a new secret message.
Does the amount (or ratio) of water to lemon juice make any changes? Try it! Add more water or more lemon juice to try a new secret message.
How else could you heat up your paper to show the message?
How else could you heat up your paper to show the message?
Click to Open
invisible-ink-l@h-guide.pdfShare Your Learning
Share Your Learning
Click to share on our Flipgrid.
Tell us about your experiment!
Tell us about your experiment!
Click the logo to open our "STEMatHome NISD" Flipgrid
Use your NISD email to share your learning (First.Last@student.nisdtx.org) *This means that only NISD students can view posts*
Share your learning using these stems:
During this activity, I learned....
My favorite part of this challenge was....
My thinking was challenged when...
This learning sparks my interest in...
Career Connection & Extension
Career Connection & Extension
Chemical Engineer
Chemical Engineer
Develops and designs chemical manufacturing processes. Involved in creating new fuel, medicines, food and many more products.
NISD Career Tree
NISD Career Tree
A career tree shows the variety of careers that are possible and helps students set career goals.
Explore the careers below that are connected to this STEM@Home Activity.
The NISD Biomedical Sciences Academy introduces students to health care and related careers.
The NISD STEM Academy helps students gain professional skills and experience in a variety of STEM related fields -- Science, Technology, Engineering and Mathematics.
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