Atomic Structure Ions Isotopes

The atomic mass of an atom is equal to

• number of protons plus number of neutrons

• number of protons plus number of electrons

• number of electrons plus the number of neutrons

Tags

NGSS.MS-PS1-1

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Subatomic particles with a positive charge

• neutrons

• atomic mass

• protons

• isotopes

Subatomic particles that are neutral in charge

• Neutrons

• Protons

• Nucleus 

• Electrons

Categorize as True or False about this chart

You will need your reference table

Groups:

(a) True

,

(b) False

• Atom X has a mass number of 14

• A and D are both the same element (Carbon)

• A and D are ions

• A and D are isotopes

• X and Z are the same element

• Atom X has a mass number of 15

Tags

NGSS.MS-PS1-1

Which of the following is true about isotopes?

• They have different atomic numbers but the same mass number

• They have the same atomic number but different mass numbers

• They have different numbers of electrons but the same number of protons

• They are always ions

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

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

• Negative

• Positive

• Neutral

• Variable

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