Structure of the Atom

How many electrons can the first energy level hold?

• 2

• 8

• 16

• 32

Which atom is represented by 10 protons, 10 neutrons, and 10 electrons.

• Sodium

• Neon

• Oxygen

• Carbon

Tags

NGSS.MS-PS1-1

Which element does the above model represent?

• Hydrogen

• Boron

• Calcium

• Lithium

Tags

NGSS.MS-PS1-1

Name this image.

Tags

NGSS.MS-PS1-1

Isotopes are atoms of the same ______________________, that have different number of ______________________, thus a different atomic ________________.

A student cuts a piece of gold wire into the smallest possible pieces. Which statement best describes the smallest piece of gold wire?

• The gold changes properties and becomes a new element.

• The chemical properties of the gold change as the wire is cut.

• The smallest piece of wire is no longer gold.

• The wire is still gold and has become an atom of gold.

What is an AMU?

• Atomic multiple unit

• Atomic mass unit

• American mass unit

• None

Tags

NGSS.MS-PS1-5

Which of the following elements contains the greatest amount of protons?

• Lithium

• Oxygen

• Calcium

• Hydrogen

Which of the following elements contains the least amount of electrons?

• Aluminum

• Fluorine

• Calcium

• Nitrogen

Who discovered that the atom has a nucleus?

• Marie Curie

• Dimitri Mendeleev

• Niels Bohr

• Ernest Rutherford