Atoms

Question 1

what is an ion

Answer 1

An atom that has the same number of protons but different number of electrons on its outer shell

Question 2

what do you call a positive ion

Answer 2

cation

Question 3

what do you call a negative ion

Answer 3

anion

Question 4

How are positive and negative ions formed?

Answer 4

Positive ions are formed when an electron is lost from the outer shell, and negative ions are formed when an electron is gained on the outer shell

Question 5

What is the law of conservation of mass?

Answer 5

During a chemical reaction, matter cannot be created or destroyed. Even though the matter may change from one form to another, the same number of atoms exists before and after the change takes place.

Question 6

What is the difference between an open and closed system?

Answer 6

In an open system, there is exchange of matter and energy with surroundings. In a closed system, no matter can enter/leave the system; only heat energy is transferred.