SC 5 P 8 2

Rey is making soup. He will dissolve cubes of instant soup mix in hot water. How can Rey make the soup cubes dissolve more quickly in the water?

• Use less water

• Use more water

• Add ice cubes to cool the water

• Break the soup cubes into smaller pieces

Tags

NGSS.MS-PS1-4

Sharla is using powder mix to make hot chocolate. She wil boil some water and then stir in the mix. What is the best way to make the powdered mix dissolve more quickly?

• Use less water

• Use more water

• Stir the mix more slowly

• Stir the mix more quickly

Tags

NGSS.MS-PS1-4

Ravi and Marge mixed cereal and pretzels for a party. After the party, they wanted to separate the mixture. They planned to package each food as snacks to eat later. Which of these is the best property to use to quickly and easily separate the mixture?

• shape

• solubility

• volume

• weight

Soraya and LIm are experimenting with different ways to separate mixtures into their original parts. Which method could NOT be used to separate sand from water?

• Putting it through a fine-mesh strainer

• Filtering it through filter paper

• Allowing the water to evaporate

• Using a magnet

Pam and Tarik are experimenting with a mixture of sugar and sand. They add water and stir thoroughly. How can they separate the sand from the mixture?

• Wait for the sand to float to the top of the water

• Pour the mixture through filter paper in a funnel

• Boil the mixture to evaporate the water

• Use a magnet to separate the sand from the sugar

Martha has a big box with a mixture of paper clips. Some are metal and some are plastic. The plastic clips come in four different colors. Which is the best property for Martha to use to quickly separate the metal paper clips from the plastic paper clips?

• volume

• cost

• magnetic attraction

• weight

Tags

NGSS.MS-PS2-3

Andrew wants to conduct an experiment to learn if he can use high temperatures to dissolve sodium chloride (salt) in water. Which term is BEST used to classify sodium chloridre mixed in water (salt water) at room temperature?

• A mixture.

• A solution.

• A compound.

• An element.

Diana loves the taste of coconut water but does not like the texture of the pulp. Which method of separation would be most effective for separating the pulp from the coconut water?

• Floatation.

• Magnetic separation.

• Sedimentation.

• Filtration.

A _______ is when two or more solid substances are combined, but they do NOT form a new substance.

_______ is calculated by dividing the mass of a substance by its volume.