Molecules and Bonds

Lab Brief #3

🎯 Your mission

Understand the idea. Then look for it everywhere.

⚡ The twist

Mixing two safe things doesn't always make a safe thing.

What you'll learn

Molecules form when two or more atoms bond together. A water molecule has two hydrogen atoms bonded to one oxygen atom, written as H₂O.

Key words

atom
The tiny building block that makes up everything around us.
chemical bond
The force that holds atoms together to make a substance.
molecule
Two or more atoms joined together to form a tiny particle.

Make a hypothesis first

Predict: will the mixture get hotter, colder, or stay the same?

Say your guess out loud — then find out if you were right.

Step 1 of 4 · Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 of 4 · Do

Build a model of an atom using craft supplies. Show protons, neutrons, and electrons in the correct arrangement. Label each particle.

Step 3 of 4 · Observe

Look for patterns in your observations.

Step 4 of 4 · Record

Make a graph or chart showing your results.

Question 1 of 3

What holds atoms together in a molecule?

How sure are you?😐 maybe

Question 2 of 3

What is a compound?

How sure are you?😐 maybe

Question 3 of 3

How is a compound different from a mixture?

How sure are you?😐 maybe

Mind = blown

🌈 Every color you see is your brain inventing a translation of light frequencies.

Nice work!

You got 0 of 3 right.

Next: Compounds vs Their Elements All lessons

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✨ More to explore

🌍 Where you see this in real life: This is happening in your kitchen right now — every time food cooks.

🏆 Stretch challenge (try it 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?”

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