Question

If anyone will do this answer correct I will mark you as Brainliest. Question no. 4 and 5.

Answer 1

Explanation for part 4 :

Compound : It is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

For example : The carbon tetrachloride $(CCl_4)$ is made from atoms of different elements (carbon and chlorine) combined together in a fixed ratio by mass.

The carbon dioxide $(CO_2)$ is made from atoms of different elements (carbon and oxygen) combined together in a fixed ratio by mass.

Element : It is a pure substance which is composed of atoms of similar elements.

For example : The molecule of hydrogen element $(H_2)$ is made from atoms of similar element (hydrogen).

The molecule of nitrogen element $(N_2)$ is made from atoms of similar element (nitrogen).

Explanation for part 5 :

Atom : It is a smallest unit of matter which can not be further divide.

When the atoms have equal number of protons (which is positively charged) and electrons (which is negatively charged) then the atoms are electrically neutral.

When an atom gains or lose one or more electrons then it becomes an ion. The ion can be anion by gaining an electron and can be cation by losing an electron.

Hence, the atoms are electrically neutral when an atom have equal number of protons and electrons.

Answer 2

Ok let's do this, Big brain moment. Hope you ready.

#4. Sulfuric acid (H2SO4) - Molecular Compound

normally are atoms of other atoms from different elements mixed together to make a new compound, in this case we got ( 2 Hydrogen, 1 sulfur, 4 Oxygen)

34. (part 2) Molecule of a element would normally just be the one atom of the one specific element for example Hydrogen again, it has one electron orbiting its center and thats it.

   

#5. A atom is electrically neutral when it is by its self and has the same number of protons as it does electrons so there is no extra charge existing in the atom