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Atoms, Elements and Compounds online exercise for - Free Printable

Atoms, Elements and Compounds online exercise for

Educational worksheet: Atoms, Elements and Compounds online exercise for. Download and print for classroom or home learning activities.

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Task 1: Fill in the blanks for these key definitions.



#### Definitions:
1. The smallest part of an element that can exist.
- This is an Atom.

2. Element: A substance that contains … type of atom.
- An element contains Only one type of atom.

3. A substance that contains one or more types of atom that are chemically bonded.
- This is a Compound.

4. Compound: A substance that contains … or more types of atom that are chemically …
- A compound contains Two or more types of atoms that are chemically Bonded.

#### Filled-in definitions:
- The smallest part of an element that can exist: Atom
- Element: A substance that contains Only one type of atom.
- Compound: A substance that contains Two or more types of atom that are chemically Bonded.

---

Task 2: Identify the particle models (Atom, Element, Compound, or Molecule).



#### Particle Models:
1. Single orange circle:
- This represents a single atom.
- Answer: Atom

2. Four green circles connected:
- These represent four atoms of the same element bonded together, forming a molecule.
- Answer: Molecule

3. Two green circles and one blue circle bonded:
- This represents two atoms of one element and one atom of another element bonded together, forming a molecule.
- Answer: Molecule

4. Cluster of yellow circles:
- This represents multiple atoms of the same element bonded together, forming a molecule.
- Answer: Molecule

5. Cluster of blue circles:
- This represents multiple atoms of the same element bonded together, forming a molecule.
- Answer: Molecule

6. Purple and blue circles bonded:
- This represents atoms of different elements bonded together, forming a molecule.
- Answer: Molecule

7. Two blue circles:
- This represents two atoms of the same element bonded together, forming a molecule.
- Answer: Molecule

---

Final Answers:


#### Task 1:
- The smallest part of an element that can exist: Atom
- Element: A substance that contains Only one type of atom.
- Compound: A substance that contains Two or more types of atom that are chemically Bonded.

#### Task 2:
1. Single orange circle: Atom
2. Four green circles connected: Molecule
3. Two green circles and one blue circle bonded: Molecule
4. Cluster of yellow circles: Molecule
5. Cluster of blue circles: Molecule
6. Purple and blue circles bonded: Molecule
7. Two blue circles: Molecule

---

Final Boxed Answer:


\[
\boxed{
\text{Task 1: Atom, Only one, Two, Bonded}
}
\]
\[
\boxed{
\text{Task 2: Atom, Molecule, Molecule, Molecule, Molecule, Molecule, Molecule}
}
\]
Parent Tip: Review the logic above to help your child master the concept of atoms and elements worksheet.
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