⚛️ Part 1: Atomic Structure and Basic Concepts

1. Label the parts of an atom. Fill in the blanks below:

The center of an atom is called the _____________ and contains positively charged _____________ and neutral _____________. The negatively charged _____________ orbit around the center.

2. Which of the following best describes an atom?

The largest unit of matter

The smallest unit of an element that retains its properties

A combination of different elements

Only found in living organisms

3. What is the main difference between a molecule and a compound?

Molecules are larger than compounds

Compounds contain different types of atoms, molecules can contain the same type

Molecules are only found in gases

There is no difference

4. Check all examples that are compounds:

H₂O (water)

O₂ (oxygen gas)

CO₂ (carbon dioxide)

N₂ (nitrogen gas)

NaCl (table salt)

🧬 Part 2: Molecules to Amino Acids

5. Explain in your own words how atoms combine to form molecules:

6. What makes amino acids special and important in living organisms?

They are the smallest atoms

They are building blocks of proteins

They only exist in plants

They cannot bond with other molecules

7. Complete the sequence from smallest to largest:

________ → ________ → ________ → Proteins

(Choose from: Amino Acids, Atoms, Molecules)

8. Draw a simple model showing how two atoms can bond together to form a molecule:

🔬 Part 3: Applying Your Knowledge

9. Look at this example: H₂O

a) How many hydrogen atoms are present? ____

b) How many oxygen atoms are present? ____

c) Is this a molecule or compound? ________________

d) Explain your answer: ________________________________________________

10. Why is it important to understand the structure of matter from atoms to amino acids in science?

Atoms to Mixtures Exploration

Atoms to Mixtures Exploration

⚛️ Part 1: Atomic Structure and Basic Concepts

🧬 Part 2: Molecules to Amino Acids

🔬 Part 3: Applying Your Knowledge

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