FOSS "Taking Mixtures Apart"

What physical property allowed you to separate the gravel, powder, and salt mixture?

• color

• particle size

• texture

• weight

The particles of the diatomaceous earth (powder) and water are smaller than the openings in the screen.

• true

• false

Which might you use to separate a mixture of nails, rubber bands, and toothpicks? Choose the BEST answer.

• screen

• water

• magnet

• evaporation

How can the density of a material be observed?

• by observing if it sinks or floats in water

• by weighing it

• by using Moh's Hardness Scale

• by creating a mixture

What is salt dissolved in water? Mark all that apply.

• a mixture

• a chemical reaction

• a solution

• a crystal

What is the best way to separate a salt solution?

• with a filter

• with a screen

• with a magnet

• with evaporation

Square shaped crystals in an evaporation dish indicate salt may have been a material in a solution.

• true

• false

Tags

NGSS.MS-PS1-2

Which of these are physical properties? Mark all that apply.

• particle size

• solubility

• magnetism

• density

When salt dissolves into water, it is no longer there. Matter has been destroyed.

• true

• false

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the mass of a solution with 50 mL of water and 15 grams of salt? (HINT: Think about the mass of 50 mL of water.)

• 215 grams

• 15 grams

• 65 grams

• 55 grams

Tags

NGSS.MS-PS1-5