8.5A (G&G)

The negatively charged particles of an atom are the ______.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

Which statement best describes an electron?

• Smaller mass than a proton and a negative charge
• Smaller mass than a proton and a positive charge
• Greater mass than a proton and a negative charge
• Greater mass than a proton and a positive charge

Which statement correctly describes the location and charge of the neutrons in an atom?

• The neutrons are inside the nucleus and have a positive charge.

• The neutrons are outside the nucleus and have a neutral charge.

• The neutrons are outside the nucleus and have a negative charge.

• The neutrons are inside the nucleus and have a neutral charge.

Tags

NGSS.MS-PS1-1

Which of the following best describes a proton?

• It has a positive charge and the same mass as an electron

• It has a neutral charge and the same mass as an neutron

• It has a positive charge and the same mass as an neutron

• It has a negative charge and the same mass as an electron

What is the total number of protons, electrons and neutrons in oxygen, O, atom that has the mass number of 16?

• 8

• 16

• 24

• 31

Tags

NGSS.MS-PS1-1

An atom of a certain element has 11 protons, and a mass number of 23. This element is very reactive in room temperature. How many neutrons are in this atom?

• 11

• 12

• 33

• 23

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

An atom of a certain element has 11 protons, and a mass number of 23. This element is very reactive in room temperature. How many electrons are in this atom?

• 11

• 12

• 33

• 23

What is the mass number?

• the number of protons

• the number of protons + the number of neutrons

• the number of electrons

• the number of neutrons