Mystery Powders Review

What is a positive reaction for the Acetic Acid test?

• Turns black

• Produces a smell

• Melts the powder

• Bubbles/Fizzes

Tags

NGSS.MS-PS1-2

What is a positive reaction for the Iodine test?

• Turns black

• Produces a smell

• Melts the powder

• Bubbles/Fizzes

Tags

NGSS.MS-PS1-2

Which of the following powders would have a positive reaction to Iodine?

• Baking soda

• Baking powder

• Salt

• Sugar

Which of the following had no reaction to the heat test?

• Salt

• Sugar

• Baking Powder

• Corn Starch

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following powders would have a positive reaction to Acetic Acid?

• Sugar

• Flour

• Corn Starch

• Baking Powder

Tags

NGSS.MS-PS1-2

Which of the following powders looks like crystals under the microscope?

• Corn Starch

• Flour

• Baking Soda

• Sugar

Which of the following powders would smell like burnt marshmallow when heated?

• Flour

• Sugar

• Salt

• Baking Soda

Which of the following would not look like a fine powder under the microscope?

• Corn Starch

• Baking Soda

• Salt

• Flour

Which powder would smell like burn toast when heated?

• Sugar

• Flour

• Salt

• Baking Powder

A powder mixture has the following characteristics: smells like marshmallow when burned, powder and crystal under a microscope, positive acetic acid test, no reaction to iodine. Which two powders are in the mixture?

• Sugar and Corn Starch

• Corn Starch and Baking Soda

• Baking Powder and Salt

• Sugar and Baking Soda

Tags

NGSS.MS-PS1-2