Bellringer for Wednesday5-20-20

Last updated almost 6 years ago

2 questions

1

Which of the following best describes an electron?

a  It has no charge and about the same mass as a proton. 

b  It has a negative charge and much less mass than a proton. 

c  It has a positive charge and much more mass than a neutron.

d  It has a negative charge and about the same mass as a neutron

a  Number of protons + Number of neutrons in each atom 

b  Number of protons + Number of electrons in each atom 

c  Number of neutrons + Number of electrons in each atom 

d  Number of protons + Number of neutrons + Number of electrons in each atom

Which of the following best describes an electron?

a  It has no charge and about the same mass as a proton. 

b  It has a negative charge and much less mass than a proton. 

c  It has a positive charge and much more mass than a neutron.

d  It has a negative charge and about the same mass as a neutron

Which of the following is the mass number of an element?

a  Number of protons + Number of neutrons in each atom 

b  Number of protons + Number of electrons in each atom 

c  Number of neutrons + Number of electrons in each atom 

d  Number of protons + Number of neutrons + Number of electrons in each atom