Unit Review Science

A student is using a triple beam balance to measure the mass of an object. The result is in the picture. What is the mass of the object she measured?

• 216 g

• 612 g

• 6 g

• 200 g

• 10 g

A student has a mixture of pebbles, staples and sand. He wants to separate the mixture into different piles: rocks, sand, and staples. Which tools should be used to separate the mixture into the piles? Choose TWO.

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A student created three different mixtures. Mixture A is made with water and sand. Mixture B is made with water and rocks. Mixture C is made from glass marbles and water. Mixture D is made with water and salt. Which of the 4 mixtures is a solution?

• Mixture A

• Mixture B

• Mixture C

• Mixture D

Tags

NGSS.MS-PS1-2

Rodrigo was very thirsty and went to the refrigerator to get a cold glass of ice water. He drank half of the water and left other half on the table and he went outside to play. When he came back inside, there were drops of water outside the glass. Why is this happening?

• The ice froze and created the drops on the glass.

• As the ice melted, it evaporated and adhered to the outside of the glass.

• The water vapor in the air condensed to a liquid on the outside of the glass.

• The cold water in the glass is leaking water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

You want to separate a mixture of small rocks and cork. What would be the best way to do this?

• A magnet

• A sieve

• A paper filter

• A beaker and water

Tags

NGSS.MS-PS1-2

You add some sugar to a glass of water. After a few minutes, you can not longer see the sugar but you notice that the water tastes sweet. What happened to the sugar in the solution?

• Particles disapeared and are no longer in the water

• It condensed

• It is mixed completely and spread out in the water

• It evaporated

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The class went on a fieldtrip and stopped to watch a pond in the park. They saw several objects in the water, some were floating and some were at the bottom. Which objects are floating and are less dense than water? Select TWO.

• Water lilly

• River pebbles

• River sand

• Wood branch

What would be the best way to separate a mixture of salt and pepper in water?

• Use a sieve

• Use a paper filter

• Use tweezers

• Use a funnel

Ryan is making lemonade because he is very thirsty. He adds 30g of sugar to 220g of water and lemon. What is the total mass of the lemonade?

• 190g

• 320g

• 250g

• 220g

Tags

NGSS.MS-PS1-2

Juan's mom is boiling water to make delicious tea. Juan was getting ice water from the pitcher next to the stove and accidentally drops all the ice water inside the boiling pot. What will happen to the water?

• The water will remain un-changed

• The water will freeze

• The water will stop boiling

• The water will be hotter

• The pot will explode

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5