Matter Unit Test

A student constructed an investigation using several substances and recorded the results in the table shown.

Which data table correctly identifies the substances listed above?

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Why are electrical wires usually wrapped in plastic coating? More than 1 answer choice

• because plastic is an insulator

• because plastic is a good conductor of electricity

• because plastic is flexible

• to protect the wires from rusting when exposed to water

A chef uses the following ingredients to prepare a meal.

1. Pepper
2. Olive Oil
3. Onion
4. Salt
5. Honey

Which table below correctly classifies the physical properties of these ingredients when placed in hot water?

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A teacher showed her class this unlabeled density column.

What can the class do to identify which layer is water?

• Add olive oil to the beaker and identify the layer on top of the oil as water

• Add water to the beaker and then identify the layer that increased in volume as water

• Heat the beaker and identify the layer that boils as water

• Place a ping pong ball in the beaker and identify the layer it floats on as water

Tags

NGSS.MS-PS1-2

Students were asked to compare the masses of four spheres that were all the same size but made of different material. The students used a balance to compare the masses of two spheres at a time. The students repeated this process three more times with different pairs of spheres and recorded observations.

Which list shows the spheres in order from greatest to least?

• Spheres A, B, C, D

• Spheres B, C, D, A

• Spheres C, A, B, D

• Spheres D, C, B, A

A student wanted to test some objects to see if they would sink or float. What conclusion can be made from her investigation?

• The marble is less dense than the water and the mineral oil

• The marble is more dense that the water and the mineral oil

• The block is less dense than the water and more dense than the mineral oil

• The block is more dense than the water and less dense than the mineral oil

Tags

NGSS.MS-PS1-2

Students investigated 4 different items and recorded their observations in a data table.

What physical property can be used to classify these objects into two different groups?

• Color

• State of matter

• Magnetism

• Solubility

A student observed and recorded data about the physical properties of two objects.

Which group shows the objects the student was observing?

• Object A is a metal fork

  Object B is a paper clip

• Object A is a plastic spoon

  Object B is an iron nail

• Object A is a sponge

  Object B is and eraser

• Object A is and eraser

  Object B is a plastic spoon

A student collected data on several objects and recorded the data in a chart.

Which object can be added to the left side of the chart?

• Aluminum foil

• Oven mitt

• Blanket

• Cotton balls

Tags

NGSS.MS-PS3-3

A student places 5 pinto beans in fresh water and 5 pinto beans in salt water. The beans in the fresh water sink, but the beans in the salt water float. Which statement below explains his findings? (more than 1 answer choice)

• The beans are more dense than fresh water

• Salt water and fresh water have the same density

• The beans are more dense than salt water

• The beans are less dense that salt water