Match the following. 1. an ancient study or art which attempted to combine science and philosophy to solve worldly problems atom 2. a homogeneous mixture of elements with metals to form metallic solids metal 3. the simplest unit of an element that still retains the properties of that element alchemy 4. two or more elements joined together such that the elements have lost their individual identity element 5. a primary substance that cannot be divided into separate substances nonmetal 6. the group of elements that are good conductors of electricity and heat compound 7. the group of elements that are poor conductors of electricity and heat alloy.

1. An ancient study or art which attempted to combine science and philosophy to solve worldly problemsAlchemy

2. A homogeneous mixture of elements with metals to form metallic solids Alloy.

3. The simplest unit of an element that still retains the properties of that elementcompound Atom

4. Two or more elements joined together such that the elements have lost their individual identity Compound

5. A primary substance that cannot be divided into separate substanceselement Element.

6. The group of elements that are good conductors of electricity and heat Metals

7 . The group of elements that are poor conductors of electricity and heat Non metal

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.