Unit 1 - Atomic Structure and Ion Formation Quiz

What is the charge of a proton?

• two-positive

• one-negative

• neutral

• one-positive

What is the approximate mass of a neutron?

• half an atomic mass unit

• two atomic mass units

• one atomic mass unit

• virtually no mass

In a neutral atom, the number of electrons is equal to the number of:

• ions

• neutrons

• protons

• nuclei

How are ions formed?

• By splitting the nucleus

• By changing the number of protons

• By changing the number of neutrons

• By losing or gaining electrons

What type of ions do non-metal atoms generally form?

• Negative ions

• Neutral ions

• Positive ions

• Double positive ions

What type of ions do metal atoms generally form?

• Negative ions

• Neutral ions

• Positive ions

• Double negative ions

What is the charge of an electron?

• two-positive

• one-negative

• neutral

• one-positive

Match the following elements to the charge they would have as an ion

• 3-

• 
• 2-

• 
• 2+

• 
• +

• 
• 3+

• 

Organize these options into the right categories

Groups:

(a) Positive ions

,

(b) Negative ions

• Generally metals

• Common examples include sodium and potassium ions

• Have a negative charge

• Common examples include chloride and nitrate ions

• Formed by gaining electrons

• Have a positive charge

• Generally non-metals

• Formed by losing electrons

What is the atomic number of an atom?

• The number of protons and neutrons

• The number of electrons

• The total number of particles

• The number of protons