Nuclear energy is produced when scientists force uranium (u) atoms to break apart. with this in mind, examine the list below. if scientists were to break apart each of the items on the list, which items would still be classified in the same way? which items would be classified differently?

• atoms
• elements
• compounds
• molecules
• matter

Compound.

Explanation:

A compound is a made up of two or more than two different elements. It can be broken down into smaller molecules.Elements are combined to form a compound by chemical bonding like ionic bonding and covalent bonding.

Different compounds of different elements can be broken down into the chemical reaction called decomposition reaction. For example:

Using electrolysis, we can break down water into its elements hydrogen and oxygen.    

c is the answer because when something is left after something evaporates that shows the chemical change.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3