Isotopes and Ions

What does the atomic number identify?

• The number of neutrons.

• The number of protons.

• The number of protons + neutrons.

• The number of electrons.

The number of protons + neutrons in the nucleus is referred to as what?

• Atomic number

• Atomic mass

• Mass number

• Isotope number

Atoms of the same element with a different number of electrons are called ___________.

• elements

• isotopes

• ions

• neutral

Which subatomic particle is used to identify the atom, as it never changes?

• Protons

• Neutrons

• 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 neutrons are in the isotope Carbon-14?

• 6

• 8

• 12

• 14

Tags

NGSS.MS-PS1-1

Atoms of the same element with a different number of neutrons are called _________.

• elements

• isotopes

• ions

• neutral

Tags

NGSS.HS-PS1-8

What is the purpose of the neutrons?

• Identifies the element.

• Holds the nucleus together.

• Determines reactivity.

Tags

NGSS.HS-PS1-8

Which subatomic particles would repel away from each other?

• protons and neutrons

• protons and electrons

• electrons and electrons

• electrons and neutrons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5