Atoms, Ions, & Isotopes

If an atom has an extra neutron, it is _____.

• a positive ion

• a neutral atom

• an isotope

• a negative ion

If an atom gains an electron, it is _____.

• a positive ion

• a negative ion

• a neutral atom

• an isotope

An atom's atomic mass comes from its _____.

• nucleus

• electron cloud

• electrons

• protons

If an atom loses an electron, it is _____.

• A positive ion

• a negative ion

• a neutral atom

• an isotope

Tags

NGSS.HS-PS1-2

Carbon-14 is an example of _____.

• a positive ion

• a negative ion

• an isotope

• a neutral atom

Ca+ is an example of _____.

• a positive ion

• a negative ion

• an isotope

• a neutral atom

Can an atom of Hydrogen have 2 protons?

• Yes, because it can be an ion.

• No, because protons identify the atom

• Yes, because it can be an isotope

• No, because only neutral atoms exist.

Tags

NGSS.MS-PS1-1

Can an atom of Helium have 3 electrons?

• Yes, because it can be an ion

• No, because protons identify the atom

• Yes, because it can be an isotope

• No, because only neutral atoms exist

Tags

NGSS.MS-PS1-1

Can an atom of Helium have 3 neutrons?

• Yes, because it can be an ion

• No, because protons identify the atom

• Yes, because it can be an isotope

• No, because only neutral atom exist

Tags

NGSS.MS-PS1-1

A neutral atom of Lithium has 3p+, 4n, and 3e-. It would be ______.

• a positive ion

• a negative ion

• an isotope

• a neutral atom