Answer:
1. An ancient study or art which attempted to combine science and philosophy to solve worldly problems Alchemy
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 element compound 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 substances element 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
Answer:
For question 1...... First exchange the valencies...
Answer: D) 
g
Explanation: The question asks to convert formula unit to grams. It is a unit conversion problem.
1 mole equals to Avogadro number of formula units. So, to convert the given number of formula units to moles, we need to divide by the Avogadro number. After this, we do moles to grams conversion and for this the moles are multiplied by the molar mass of the compound. Molar mass of AgCl is 143.32 gram per mol.
= g
So, the correct option is D) g
