1. want to know the properties of the chemical bond.2. want to know the structure of the atom.3. want to know the properties of matter.4. want to know the chemical elements.
1. To know the properties of chemical bonds 2. To recognize the structure of the atom 3. To recognize the properties of matter 4. To know the chemical composition.
1. Want to know the properties of the chemical bonding 2. Want to know the structure of the atom 3. Want to know the property of matter 4. Want to know the chemical composition .