5.6c Independent Practice - Science

Salt, sand, and pepper are poured into a beaker of water and stirred. What will most likely happen after the contents are stirred?

• The salt and pepper will dissolve.

• Only the salt will dissolve.

• Only the sand will dissolve.

• The salt and sand will dissolve.

What is the best explanation for the salt crystals forming on the pipe cleaner after 1-2 weeks?

• The salt dissolves in the water forming a solution; the water evaporates and leaves the salt behind.

• The salt dissolves in the water forming a solution; the salt evaporates and sticks to the pipe cleaner.

• The salt is less dense than the water.

• The salt has more mass.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A teacher pours sugar in a glass of tea. After stirring the mixture for a few seconds, the sugar is no longer visible. What is the most reasonable explanation for what happened to the sugar after it was stirred?

• The sugar disappeared in the mixture and formed a solution.

• The sugar dissolved in the mixture and formed a solution.

• The sugar evaporated from the mixture.

• The sugar blends in with the tea making it hard to see.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following is soluble in water?

• Pepper

• Sand

• Iron filings

• Table salt

An experiment asks students to form a solution by mixing chocolate syrup and water. Which tool is needed to separate the solution?

• strainer

• spoon

• hot plate

• magnet

What question was most likely being tested?

• What types of matter dissolve in water?

• What types of matter evaporate?

• What types of matter float in water?

• What types of matter sink in water?

Tags

NGSS.MS-PS1-2

According to the information in the chart, which substance could be salt?

• Substance Q

• Substance S

• Substance T

• Substance R

Students prepare a solution of instant tea and place 30 mL of the solution in a Petri dish. Which answer choice best explains what happens to the solution when it is placed in a dry, warm location for 3 days?

• The solution will evaporate and the Petri dish will be empty.

• The solution will not change.

• The water will evaporate and the instant tea will remain in the Petri dish.

• The water will condensate and the instant tea will remain in the Petri dish.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

All of the following are examples of solutions EXCEPT— Select two answers

• oxygen

• lemonade

• brewed coffee

• mixed nuts

A teacher combines 20 grams of salt with 150 mL of water. The solution is placed on a hot plate to find out how long it takes the water to evaporate. How many grams of salt will remain after all the water evaporates?

• 150 grams

• 20 grams

• 170 grams

• No salt will remain