Chemistry
Easy
Invisible Ink Message
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:15 min Materials:6 items Age range:6-12
Popular Materials
Chemistry
Easy
Amazing Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:20 min Materials:6 items Age range:6-12
Chemistry
Medium
Super Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:25 min Materials:6 items Age range:6-12
Chemistry
Hard
Mega Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:30 min Materials:6 items Age range:6-12
Chemistry
Easy
Ultimate Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:5 min Materials:6 items Age range:6-12
Chemistry
Medium
Epic Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:10 min Materials:6 items Age range:6-12
Chemistry
Hard
Cool Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:15 min Materials:6 items Age range:6-12
Chemistry
Easy
Awesome Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:20 min Materials:6 items Age range:6-12
Chemistry
Medium
Fun Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:25 min Materials:6 items Age range:6-12
Chemistry
Hard
Quick Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:30 min Materials:6 items Age range:6-12
Chemistry
Easy
Simple Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:5 min Materials:6 items Age range:6-12
Chemistry
Medium
Giant Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:10 min Materials:6 items Age range:6-12
Chemistry
Hard
Mini Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:15 min Materials:6 items Age range:6-12
Chemistry
Easy
Rainbow Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:20 min Materials:6 items Age range:6-12
Chemistry
Medium
Glow-in-the-Dark Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:25 min Materials:6 items Age range:6-12
Chemistry
Hard
Magnetic Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:30 min Materials:6 items Age range:6-12
Chemistry
Easy
Solar-Powered Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:5 min Materials:6 items Age range:6-12
Chemistry
Medium
Wind-Powered Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:10 min Materials:6 items Age range:6-12
Chemistry
Hard
Water-Powered Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:15 min Materials:6 items Age range:6-12
Chemistry
Easy
Spinning Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:20 min Materials:6 items Age range:6-12
Chemistry
Medium
Bouncing Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:25 min Materials:6 items Age range:6-12
Chemistry
Hard
Floating Invisible Ink Message Challenge
Lemon juice contains citric acid, which is a carbon-based compound. When you write with it and let it dry, the message i...
Duration:30 min Materials:6 items Age range:6-12
Chemistry
Medium
pH Indicator with Red Cabbage
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:25 min Materials:5 items Age range:8-12
Chemistry
Hard
Amazing pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:30 min Materials:5 items Age range:8-12
Chemistry
Easy
Super pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:5 min Materials:5 items Age range:8-12
Chemistry
Medium
Mega pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:10 min Materials:5 items Age range:8-12
Chemistry
Hard
Ultimate pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:15 min Materials:5 items Age range:8-12
Chemistry
Easy
Epic pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:20 min Materials:5 items Age range:8-12
Chemistry
Medium
Cool pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:25 min Materials:5 items Age range:8-12
Chemistry
Hard
Awesome pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:30 min Materials:5 items Age range:8-12
Chemistry
Easy
Fun pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:5 min Materials:5 items Age range:8-12
Chemistry
Medium
Quick pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:10 min Materials:5 items Age range:8-12
Chemistry
Hard
Simple pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:15 min Materials:5 items Age range:8-12
Chemistry
Easy
Giant pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:20 min Materials:5 items Age range:8-12
Chemistry
Medium
Mini pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:25 min Materials:5 items Age range:8-12
Chemistry
Hard
Rainbow pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:30 min Materials:5 items Age range:8-12
Chemistry
Easy
Glow-in-the-Dark pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:5 min Materials:5 items Age range:8-12
Chemistry
Medium
Magnetic pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:10 min Materials:5 items Age range:8-12
Chemistry
Hard
Solar-Powered pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:15 min Materials:5 items Age range:8-12
Chemistry
Easy
Wind-Powered pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:20 min Materials:5 items Age range:8-12
Chemistry
Medium
Water-Powered pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:25 min Materials:5 items Age range:8-12
Chemistry
Hard
Spinning pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:30 min Materials:5 items Age range:8-12
Chemistry
Easy
Bouncing pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:5 min Materials:5 items Age range:8-12
Chemistry
Medium
Floating pH Indicator with Red Cabbage Challenge
Red cabbage contains anthocyanins — natural pigments that change color depending on the pH (acidity or basicity) of a so...
Duration:10 min Materials:5 items Age range:8-12