Chapter 2 Atoms, Ions And Compounds

Question 1

What is the charge and mass of protons electrons and neutrons?

Answer 1

Proton: mass 1, charge +1
Neutron: mass 1, charge 0
Electron: mass 1/1836 aka negligible, charge -1

Question 2

What is the atomic number?

Answer 2

Atomic number refers to the amount of protons in the nucleus

Question 3

What is the mass number on a periodic table?

Answer 3

The mass of an atom, how many protons and neutrons are in the nucleus.

Question 4

What is an isotope?

Answer 4

Atoms of the same element (same atomic number) but a different number of neutrons (mass number)

Question 5

What is an ion and what are the different types, where in the periodic table are they found?

Answer 5

Ions are charged atoms.
A cation is a positively charged ion. These are usually metals
An anion is a negatively charged ion. These are usually non-metals

Question 6

How do you name a binary compound?

Answer 6

Take the name of the first element but change the ending of the second elements name to -use
For ionic compounds the metal ion always comes first
E.g. sodium chloride