Isotopes and Ions

For a given element, the atomic number indicates the number of _____

• protons in the nucleus
• neutron in the nucleus
• electrons in the atom
• nucleons in the atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.MS-PS1-1

How many neutrons in C-14?

How many protons does this isotope of titanium have?

What is the mass number of an atom that contains 8 protons, 9 neutrons, and 10 electrons?

Isotopes of an element have a different number of...

• Protons

• Neutrons

• Electrons

• Mass

Tags

NGSS.HS-PS1-8

If an atom has 3 valence electrons, what charge will it have as an ion?

• +3
• -3
• +5
• -5

Tags

NGSS.HS-PS1-1

If an element gains 2 electrons, what charge will it have when it becomes an ion?

• +2
• -2
• -6
• -6

Why are ions formed?

• To make our lives difficult

• Because atoms want to be stable

• Because atoms have the same number of protons and electrons

• Because atoms gained neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Anions are...

• Positive

• Negative

• Neutral

Tags

NGSS.HS-PS1-3