Ionic Compounds and Transition Metals

The video tutorial from Chem Talk Education covers how to determine ion charges and write chemical formulas. It explains the concept of ions, cations, and anions, and how to use the periodic table to find ion charges. The crisscross method for writing chemical formulas is demonstrated with examples. Additionally, the video explores the chemistry behind photography, focusing on the role of silver bromide in photographic film. The tutorial concludes with a recap of the key points discussed.

What is the charge of an ion with more electrons than protons?

• Variable

• Neutral

• Negative

• Positive

Which group in the periodic table contains elements with a charge of +1?

• Group 1

• Group 2

• Group 3

• Group 4

What is the charge of magnesium based on its group in the periodic table?

• +2

• -2

• -1

• +1

How do you determine the charge of a transition metal ion?

• By its atomic number

• By its group number

• By its period number

• By Roman numerals in parentheses

What is the first step in writing the formula for an ionic compound?

• Determine the number of atoms

• Identify the type of bond

• Write out the elements and their charges

• Balance the equation

In the crisscross method, what do the numbers represent after removing the charge signs?

• The atomic number

• The atomic mass

• The number of atoms

• The charge of the ions

What is the chemical formula for bismuth bromide using the crisscross method?

• BiBr

• BiBr2

• BiBr3

• Bi3Br

What happens to bromide ions in photographic film when exposed to light?

• They are neutralized

• They are ionized

• They are dissolved

• They are oxidized

What is the role of silver ions in photographic film?

• They create color

• They reduce contrast

• They increase brightness

• They are reduced to produce images

What method is used to determine how many of each ion is needed in a chemical formula?

• Balancing method

• Crisscross method

• Substitution method

• Addition method