Elements, Compounds and Mixtures interactive worksheet | Live ... - Free Printable

Let's solve this step by step.

We are given 15 diagrams, each showing atoms (represented by circles) of different colors. Each color represents a different type of atom. Atoms that are touching are bonded together.

We need to classify each diagram using the following labels:

- A = Element – Only one type of atom present, possibly in molecules (e.g., O₂).
- B = Compound – Molecules made of two or more different types of atoms chemically bonded.
- C = Mixture of elements – Two or more different elements (each in their elemental form), not chemically bonded.
- D = Mixture of compounds – Two or more different compounds, not chemically bonded.
- E = Mixture of elements and compounds – Contains both elemental forms and compounds.

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Now let’s analyze each image:

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1)

- All molecules are identical: two black atoms and one white atom (like H₂O).
- Same molecule repeated → Compound.
- Answer: B

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2)

- Two types of atoms: black and white.
- Both appear as single atoms (not bonded).
- No molecules formed; just individual atoms.
- So, mixture of two elements (atoms not bonded).
- Answer: C

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3)

- Two types of molecules:
- One is two white atoms bonded (e.g., O₂).
- Another is two black atoms bonded (e.g., N₂).
- So, two different elements in their elemental form.
- Answer: C

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4)

- All molecules are the same: one central black atom with three white atoms attached (like NH₃).
- All molecules are identical → Compound.
- Answer: B

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5)

- Only one kind of atom (all black), but they are paired up (diatomic molecules like O₂).
- But all are the same element → Element.
- Answer: A

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6)

- All molecules are identical: one black atom and four white atoms (like CH₄).
- Uniform compound → Compound.
- Answer: B

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7)

- All molecules are two white atoms bonded together (e.g., O₂).
- Only one type of molecule → Element.
- Answer: A

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8)

- Two types of molecules:
- One is two white atoms bonded (e.g., O₂).
- Another is one black and one white atom bonded (e.g., CO).
- So, one element (O₂) and one compound (CO).
- Answer: E

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9)

- Two types of particles:
- Single black atoms (elemental form).
- Diatomic white molecules (e.g., O₂).
- So, mixture of two elements.
- Answer: C

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10)

- Three types of molecules:
- Diatomic white molecules (O₂).
- Diatomic black molecules (N₂).
- And some molecules with one black and one white atom (e.g., NO).
- So, two elements (O₂, N₂) and one compound (NO).
- Answer: E

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11)

- All molecules are the same: long chains of black atoms with white atoms attached (e.g., hydrocarbons).
- But all molecules are identical → Compound.
- Answer: B

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12)

- All molecules are identical: two black atoms and one white atom (like H₂O).
- Uniform → Compound.
- Answer: B

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13)

- All molecules are the same: one black atom with four white atoms (like CH₄).
- Uniform → Compound.
- Answer: B

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14)

- Two types of molecules:
- One is two black atoms bonded (e.g., N₂).
- Another is one black and two white atoms (e.g., H₂O).
- So, one element (N₂) and one compound (H₂O).
- Answer: E

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15)

- All molecules are the same: one black atom with three white atoms (like NH₃).
- Uniform → Compound.
- Answer: B

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Final Answers:

1) B
2) C
3) C
4) B
5) A
6) B
7) A
8) E
9) C
10) E
11) B
12) B
13) B
14) E
15) B

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✔ Summary:

- A (Element): 5, 7
- B (Compound): 1, 4, 6, 11, 12, 13, 15
- C (Mixture of elements): 2, 3, 9
- D (Mixture of compounds): None
- E (Mixture of elements and compounds): 8, 10, 14

> Note: There are no examples of D (mixture of compounds only) — all mixtures involve either elements or both elements and compounds.

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