Atoms: Protons, Neutrons, and Electrons

What is at the center of every atom?

• an electron

• a compound

• a molecule

• a nucleus

Tags

NGSS.MS-PS1-1

Which two particles make ups the nucleus of an atom?

• protons and electrons

• protons and neutrons

• molecules and compounds

• neutrons and electrons

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NGSS.MS-PS1-1

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.MS-PS1-1

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

Tags

NGSS.MS-PS1-1

Which of the following determines the type of element that an atom makes?

• the size of the nucleus

• the number of protons

• how much the atom weighs

• the number of neutrons

Tags

NGSS.MS-PS1-1

What forms when two atoms combine?

• a molecule

• a nucleus

• a proton

• an electron

Tags

NGSS.MS-PS1-1

What is a compound?

• the center of an atom that is formed by neutrons, protons, and electrons

• a tiny particle that makes up all matter

• a molecule that is formed from two or more different types of atoms

• a molecules that is formed from the same types of atoms

Tags

NGSS.MS-PS1-1