Ions and Isotopes - Brain Pop

The atomic number of an element tells you how many ________ are in that element.

• Neutrons

• Protons

• Electrons

• Isotopes

The atomic mass on the periodic table is actually just an ________ mass.

• Exact

• Maximum

• Average

• Rounded

Every chlorine atom has 17 protons no matter what, but the number of ________ in an element can vary.

• Protons

• Electrons

• Neutrons

• Energy levels

Isotopes are atoms of the same element with a different number of ________.

• Protons

• Neutrons

• Electrons

• Orbits

An isotope is named by its mass number, which is the number of protons plus the number of ________.

• Electrons

• Neutrons

• Energy levels

• Valence electrons

How many protons does Cl-35 have?

• 35

• 17

• 18

• 20

How many neutrons does Cl-35 have?

• 15

• 17

• 18

• 35

How many protons does Cl-37 have?

• 17

• 35

• 37

• 20

How many neutrons does Cl-37 have?

• 17

• 18

• 20

• 37

Cl-37 is ______ than Cl-35 because it has two extra neutrons.

• Lighter

• Smaller

• More reactive

• Heavier