Science

Student measured 100ml of water and poured it inside a beaker. The teacher then asked the students to place 50 ml of water in the freezer and 50 ml of water in a hotplate for 20 minutes. What did the students most likely observe after 20 minutes

• The water in the freezer became a solid while the water on the hotplate evaporated

• The water in the freezer stayed a liquid, while the water on the hotplate was boiling

• The water in the freezer "disappeared: while the water in the hotplate stayed a liquid

• Both the water in the freezer and the hotplate keep the same state of matter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The picture below shows a balanced scale using a box and a mystery object. Students are investigating using this balance what are they trying to measure

• Volume

• Size of the box

• Density

• Mass

A child took a container of ice cream out of a freezer and placed it on a counter for an hour. Which statement equation shows what happened to the ice cream?

• Liquid- Heat = Solid

• Solid + Heat = Liquid

• Liquid + Heat = Gas

• Solid - Heat = Gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram above shows one container with oil and water and another with oil and a cork. Which diagram below shows what most likely would happen if oil, water, and the cork were all put in the same container?

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Tags

NGSS.MS-PS1-2

Which of the following is a good conductor of electricity?

• glass rod

• cotton string

• plastic tubing

• copper penny

A student reads the label on the salad dressing above. Why would the students shake the salad dressing well before using it?

• Vinegar and oil have different densities

• Vinegar and oil easily form a solution

• Vinegar and oil both contain water

• Vinegar and oil are both liquids

Tags

NGSS.MS-PS1-2

5 Jars with 92* C water are set up with thermometers. 4 jars are wrapped equally with different material. One jar is kept unwrapped as a control. After 10 minutes the temperature is checked and noted in the above chart. Which property of the material is most likely being tested?

• state of matter

• Thermal energy insulation

• Thermal energy production

• ability to conduct electricity

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS3-3

What is the difference in grams between the total mass of the liquid substances and the total mass of the solid substances in the above chart?

• 298

• 130

• 168

• 428

A student classifies the above objects shown based on their physical properties. Which property cannot be used to classify these objects into more than one group?

• Magnatism

• Mass

• Electrical Conductivity

• Solubility in water

Tags

NGSS.MS-PS1-2

A teacher dropped a bolt into a container of maple syrup and asked the students to remove it without touching the maple syrup. At first they used a strong magnet but the bolt would not move. They finally poured the maple syrup into another container to get the bolt out. Which of these best describes some of the bolt's properties?

• The bolt is magnetic and has the same density as the syrup

• The bolt is nonmagnetic and more dense than the maple syrup

• The bolt is nonmagnetic and less dense than the syrup

• The bolt is magnetic and less dense than the maple syrup

Tags

NGSS.MS-PS1-2