Available Answers

1. 1.

   Fill in the blanks.

   1. Matter occupies space and has ______________________.
   2. Matter is made of tiny particles called __________________________.
   3. Molecules are made of two or more _______________________ joined together.
   4. Molecules of elements contain the __________________ kind of atoms.
   5. A substance formed by only one kind of atoms is called an ________________________.
   6. A water molecules has two atoms of hydrogen and one atoms of ___________________.
2. 2.

   Name three elements.
3. 3.

   Name two compounds.
4. 4.

   Why does matter not fall apart even though it is made of tiny particles?
5. 5.

   Mention two chemical changes.
6. 6.

   Explain why a change in the state of matter is not a chemical change.