BIO111 section 2.1

What is the smallest component of an element that retains all of the chemical properties of that element?

• Atom

• Electron

• Neutron

• Proton

What is the maximum number of electrons that can be present in the second energy level of an atom?

• 8

• 6

• 4

• 2

What is the process by which carbon-14 decays to nitrogen-14 called?

• Gamma decay

• Delta decay

• Beta decay

• Alpha decay

What is the maximum number of electrons that can be present in the first energy level of an atom?

• 8

• 4

• 2

• 6

What is the maximum number of electrons that can be present in the third energy level of an atom?

• 2

• 4

• 6

• 8

Atomic mass = ​ (a)   +​ (b)  

• protons
• neutrons
• electrons

Match the subatomic particle to the proper charge

• Electron

• positive

• Proton

• neutral

• Neutron

• negative

The building blocks of matter are called

different forms of the same element that have the same number of protons, but a different number of neutrons are called ​ (a)  

• isotopes
• ions
• isobars

Positive ions are formed by losing electrons and are called ​ (a)   . Negative ions are formed by gaining electrons and are called ​ (b)   .

• cations
• anions