3.1-11 | Unit 3 Review

Different isotopes have...

• different masses
• different atomic numbers
• different electrons
• different protons

Tags

NGSS.HS-PS1-8

According to the isotopic notation for copper-63, how many neutrons are present in this type of atom?

• 29
• 34
• 63
• 92

Tags

NGSS.HS-PS1-8

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

Tags

NGSS.HS-PS1-7

which explanation of this notation is correct?

•  12 is proton #
• 6 tells you there are 6 neutrons
• 6 tells you there are 6 protons
• 12 is not a mass # here

Compute the average atomic mass for silicon:

• 27.977
• 28.09
• 28.976
• The average mass cannot be determined from provided information.

Do the following atoms belong to the same element? Explain
       Aluminum-27
       An atom with 14 protons and 13 neutrons

• Yes because they have the same number of protons
• Yes because they have the same mass
• No because they have different number of protons
• No because they have different number of neutrons

Tags

NGSS.MS-PS1-1

A neutral atom of the isotope ²⁶₁₂Mg would consist of

• 12 protons, 26 neutrons, 26 electrons
• 26 protons, 12 neutrons, 26 electrons
• 26 protons, 14 neutrons, 14 electrons
• 12 protons, 14 neutrons, 12 electrons

Tags

NGSS.MS-PS1-1

A neutral atom would become an ion that has a charge of 2+ by 

• Losing two protons
• Losing two neutrons
• Losing two electrons

What particle completes this reaction?

• alpha particle

• beta particle

• gamma particle

• neutron

Tags

NGSS.HS-PS1-8

Complete the nuclear equation and determine the type of decay that is occurring in this reaction. 

• alpha
• beta
• gamma
• none

Tags

NGSS.HS-PS1-8