Isotopes & ions

The Identity of an atom is determined by the number of ____.

• Protons

• Neutrons

• Electrons

In an atom, there are three types of subatomic particles. ______ are positively charged, ______ are negatively charged, and ______ are neutral.

• Protons, Electrons, Neutrons

• Electrons, Protons, Neutrons

• Neutrons, Protons, Electrons

• Electrons, Neutrons, Protons

An atom of an element with a different number of neutrons but the same identity is a(n)_____

• Isotope

• Ion

• Atom

• Particle

Carbon-14 has ____ protons, ____ electrons, and _____ neutrons.

• 6, 6, 8

• 6, 6, 6

• 6, 6, 14

• 6, 10, 14

Isotopes of the same element have the same number of ________ but a different number of _______.

• protons, neutrons

• neutrons, protons

• protons, electrons

• electrons, neutrons

An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does it contain?

• 15

• 16

• 31

• 46

By studying the picture, you can determine that Carbon-13 has ____ protons.

• 6

• 13

• 12

• 14

Using the picture, you can determine that Carbon-13 has ____ neutrons.

• 13

• 6

• 12

• 7

Atomic Mass is...

• protons + neutrons

• neutrons + electrons

• protons + electrons

A positive ion is called an

• Anion

• Cation