Structure of an Ato

The particles with no charge in an atom are the _______.

• electrons

• neutrons

• protons

• protons and neutrons

Tags

NGSS.MS-PS1-1

The negatively charged particles of an atom are the ______.

• electrons

• protons

• neutrons

• protons & neutrons

Tags

NGSS.MS-PS1-1

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons

• 8 protons

• 8 neutrons

• a mass number of 8

Tags

NGSS.MS-PS1-1

Atoms are made up of ________________

• energy

• electrons

• subatomic particles

• gasses

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons

• Protons and neutrons

• Neutrinos and positrons

• DNA and RN

Tags

NGSS.MS-PS1-1

Which is an electron?

• A

• B

• C

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

Tags

NGSS.MS-PS2-3

What is at the center of every atom?

• An electron

• A compound

• A molecule

• A nucleus

What is the role of an electron in an atom?

• Electrons live inside the nucleus and carry a neutral charge.

• Electrons circle the nucleus and have a positive charge.

• Electrons circle the nucleus and have a negative charge.

• Electrons live inside the nucleus and have a negative charge.

Tags

NGSS.HS-PS1-2

In an atom, what is the number of protons equal to?

• The number of electrons.

• The number of neutrons.

• The number of molecules.

• The number of nuclei.