DOL: NOVEMBER 21ST

Emmitt adds 5 grams of sugar to his 50 grams of water to make lemonade. After the sugar dissolves completely, what will the mass of the solution be?

• 50 grams

• 55 grams

• 45 grams

• 5 grams

Tags

NGSS.MS-PS1-5

A scientist needs to retrieve salt from saltwater. Arrange the steps in correct order.

• Heat the saltwater

• Collect the remaining salt

• Bring the water to a boil until it evaporates

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Shaila mixes the substances at her table without waiting for instructions. She needs to separate them before Ms. House notices. Which step should she not take to sort the sand, water, iron fillings, and cork?

• Use a magnet to pull out the iron fillings.

• Use filter paper to collect the sand.

• Use tweezers to collect the cork.

• Use a hot plate to evaporate the water.

A mechanic accidentally drops metal screws into a bucket of sand. Explain how the mechanic could use the physical properties of the materials to separate the screws from the sand.

A chef is preparing a dish and accidentally mixes salt with pepper. Which method would be most effective for separating them?

• Adding water and stirring

• Using a strainer

• Using a magnet

• Picking out the pieces by hand