Chapter 2 - Atoms, ions and compounds

Question 1

What is the relative atomic mass of an electron?

Answer 1

1/1836

Question 2

What is the definition of an isotope?

Answer 2

The same number of protons but different numbers of neutrons.

Question 3

What is the definition of relative atomic mass?

Answer 3

The mass of an atom relative to 1/12th of the mass of an atom of the
12C isotope.

Question 4

What charge does the ion Zinc (Zn) have?

Answer 4

2+

Question 5

What charge does the ion silver (Ag) have?

Answer 5

+

Question 6

What charge does an ammonium ion (NH4) have?

Answer 6

+

Question 7

What charge does a hydroxide ion (OH) have?

Answer 7

-

Question 8

What charge does a nitrate ion (NO3)have?

Answer 8

-

Question 9

What charge does a nitrite ion (NO2) have?

Answer 9

-

Question 10

What charge does a hydrogencarbonate ion (HCO3) have?

Answer 10

-

Question 11

What charge does a manganate (VIII) permanganate ion (MnO4) have?

Answer 11

-

Question 12

What charge does a carbonate (CO3) have?

Answer 12

2-

Question 13

What charge does a sulfate ion (SO4)have?

Answer 13

2-

Question 14

What charge does a sulfite ion (SO3) have?

Answer 14

2-

Question 15

What charge does a dichromate ion (Cr2O7) have?

Answer 15

2-

Question 16

What charge does a phosphate ion (PO4) have?

Answer 16

3+