Performance Task: Periodic Properties Evaluation

Which of the above models shows sodium?

• Model A

• Model B

• Model C

• Model D

Tags

NGSS.MS-PS1-1

Which of the above models shows magnesium?

• Model A

• Model B

• Model C

• Model D

Tags

NGSS.MS-PS1-1

Which of the above models shows potassium?

• Model A

• Model B

• Model C

• Model D

Tags

NGSS.MS-PS1-1

Use the pattern of charge distribution (protons and electrons) to determine the relative size of the atoms. Which is the correct order of size, from smallest to largest?

• Na < Mg < K

• Mg < Na < K

• K < Mg < Na

• K < Na < Mg

Which requires the most energy to remove an electron (ionization energy): magnesium or potassium? Why?

• Potassium requires the most energy because it’s smaller.

• Potassium requires the most energy because it’s larger.

• Magnesium requires the most energy because it’s smaller.

• Magnesium requires the most energy because it’s larger.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Use your understanding of charges in the metals to plan the three act chemistry magic show. Which metal will be the most reactive?

• Potassium

• Sodium

• Magnesium

• Gold

Using the data from your Salt my Fries lab, choose A: TRUE or B: FALSE for the statement:

Substance A has high conductivity.

• TRUE

• FALSE

• Not enough information

• Both A and B

Tags

NGSS.MS-PS1-2

Using the data from your Salt my Fries lab, choose A: TRUE or B: FALSE for the statement: Substance C has a high melting point.

• TRUE

• FALSE

• Not enough information

• Both A and B

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Based on your data, choose the particle diagram that shows one substance with a high melting point.

• Diagram A

• Diagram B

• Both diagrams

• Neither diagram

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Choose the best explanation for why a substance has a high melting point.

• B has a high melting point because the weaker forces between atoms create weaker bonds which make them easier to break.

• C has a high melting point because the positive and negative ions form a crystal lattice, making a stronger bond that is harder to break.

• B has a high melting point because it is made of non-metals.

• A has a high melting point because it is soluble in water.

Tags

NGSS.HS-PS1-3