Structure of Matter

Edit Answers
123456789101112
Across
  1. 4. Certain elements show more than one valency, they exhibit _______ valency.
  2. 6. The smallest particle of an element or a compound that can exist independently.
  3. 9. A substance formed by the chemical combination of two or more elements in fixed proportions.
  4. 10. The atoms of some elements can exist independently and called ________ elements.
  5. 11. A substance made up of only one kind of atoms that cannot be broken down into simpler substances by chemical methods.
  6. 12. The smallest particle of an element that can take part in a chemical reaction.
Down
  1. 1. These are used to represent compounds.
  2. 2. The atoms of many elements cannot exist independently in nature and called _______ elements.
  3. 3. The combining capacity of an element to attain stability.
  4. 5. The elements or compounds that take part in a chemical reaction are called the _______.
  5. 7. These are used to represent elements.
  6. 8. The number of atoms present in a molecule of an element.