Unit 3 Review - Quiz

Subatomic particles found on the outermost shell & responsible for the atom's reactivity

• neutrons

• valence electrons

• isotopes

• ions

Atoms of the same element with a different number of neutrons

• Ion
• Gluons
• Isotope
• Quarks

Tags

NGSS.HS-PS1-8

The smallest particle of an element that shows all the properties of that element.

• Subatomic Particles
• Atom
• Quarks
• Gluons

Tags

NGSS.MS-PS1-1

Where electrons are likely to be found as they travel around the nucleus

• Nucleus
• Electron Cloud
• Within a Proton
• Within a Neutron

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

Tags

NGSS.HS-PS1-8

How do you calculate the number of neutrons in an atom

• Atomic Mass - Atomic Number

• Atomic Number - Atomic Mass

• Atomic Mass - Electrons

• none of these

Which subatomic particle determines the identity of an element?

• protons

• neutrons

• electrons

Which subatomic particle determines the charge of an atom?

• protons

• neutrons

• electrons

The electron is not included in the calculations for the atomic mass because

• It has negative charge

• It is located in the outer energy levels of the atom

• Its mass is basically zero

• It attracts neutral particles

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1