3.) The smallest particle of a component that has all the properties of the element.
[tex]\small\pmb{\qquad\rm a. \:Atom}[/tex]
[tex]\small\pmb{\qquad\rm b. \:Mixture}[/tex]
[tex]\small\pmb{\qquad\rm c. \:Element}[/tex]
[tex]\small\pmb{\qquad\rm d. \:Compound}[/tex]

4. It is made up of two or more substances that are physically combined.

[tex]\small\pmb{\qquad\rm a. \:Pure\:substance}[/tex]
[tex]\small\pmb{\qquad\rm b. \:Compounds}[/tex]
[tex]\small\pmb{\qquad\rm c. \:Chemical\:change}[/tex]
[tex]\small\pmb{\qquad\rm d. \:Mixture}[/tex]

5.) It is composed of proton, neutron, and electron.

[tex]\small\pmb{\qquad\rm a. \:Atomic\:structure}[/tex]
[tex]\small\pmb{\qquad\rm b. \:Sub-atomic\:particles}[/tex]
[tex]\small\pmb{\qquad\rm c. \:Atomic\:mass}[/tex]
[tex]\small\pmb{\qquad\rm d. \:Atom}[/tex]

6. It is equal to the sum of the number of protons, and neutrons, of an atom.

[tex]\small\pmb{\qquad\rm a. \:Atomic\:mass}[/tex]
[tex]\small\pmb{\qquad\rm b. \:Atomic\:number}[/tex]
[tex]\small\pmb{\qquad\rm c. \:Proton}[/tex]
[tex]\small\pmb{\qquad\rm d. \:Neutron}[/tex]
​