Atoms, Ions, and Isotopes

What does the atomic number identify?

• The number of neutrons.

• The number of protons.

• The number of protons + neutrons.

• The number of electrons.

How many neutrons are in the following atom?

• 47

• 61

• 108

• 155

Tags

NGSS.MS-PS1-1

How many protons are in the following atom?

• 82

• 125

• 207

• 189

Tags

NGSS.MS-PS1-1

How many electrons does the following ion have?

• 10

• 12

• 14

• 22

Tags

NGSS.MS-PS1-1

If an atom has 15 protons and 16 neutrons, what is its atomic number?

• 15

• 16

• 31

• 1

Tags

NGSS.MS-PS1-1

An atom that contains more or less neutrons than is normal is called

• an ion.

• an isotope.

Which of the following is an example of an ion?

Tags

DOK Level 1: Recall

What is the charge of an ion called when it loses one or more electrons?

• Negative

• Positive

• Neutral

• Variable

How does the number of electrons in an ion compare to the number of electrons in a neutral atom of the same element?

• More or fewer electrons

• Fewer electrons only

• Same number of electrons

• More electrons only

Identify the isotope notation for an element with 15 protons and 16 neutrons.

Tags

DOK Level 2: Skill/Concept