Atoms, Ions, and Their Charges Explained

The video tutorial introduces the concept of ions and elements, using carbon and boron as examples. It explains how ions form when there is an imbalance between protons and electrons, leading to positive or negative charges. The tutorial includes a detailed example of calculating the protons, neutrons, and charge of a platinum ion, emphasizing the terms cation and anion. The video concludes with a summary of key terminology related to ions.

What defines an element in terms of its atomic structure?

• The atomic mass

• The number of neutrons

• The number of protons

• The number of electrons

What happens to an atom when it loses an electron?

• It becomes a positive ion

• It becomes a neutral atom

• It remains unchanged

• It becomes a negative ion

If an atom has more electrons than protons, what is it called?

• A molecule

• A neutral atom

• An anion

• A cation

How many protons does a neutral boron atom have?

• Six

• Five

• Four

• Seven

In the example of platinum, what is the charge of the ion if it has 74 electrons?

• Neutral

• -4

• +4

• +2

How many neutrons are present in a platinum atom with a mass number of 195?

• 78

• 100

• 117

• 195

What is the term for a positively charged ion?

• Proton

• Neutral ion

• Cation

• Anion

What is the term for a negatively charged ion?

• Electron

• Cation

• Anion

• Neutral ion

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

• Negative

• Positive

• Zero

• Neutral

What do you call an atom or molecule with an unequal number of protons and electrons?

• Neutral atom

• Ion

• Molecule

• Isotope