Physical Science

How is the balloon able to pick up the pieces of paper?

• Frictional force is overcoming gravitational force.

• Magnetic force is overcoming electrical force.

• Electrical force is overcoming gravitational force.

• Gravitational force is overcoming magnetic force.

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NGSS.MS-PS2-3

Light waves can be reflected, refracted and absorbed. Which of the following is an example of light waves being absorbed?

• A ray of light travels from the Sun to Earth's atmosphere.

• A mirror changes the direction of a light ray.

• A magnifying lens increases the image size of a penny.

• A road's black pavement becomes hot in the sunlight.

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NGSS.MS-PS4-2

A scientist wants to break down a newly discovered element. She wants to break it down to the smallest particle that retains the element's chemical properties. What particle would the scientist end with after this process?

• a proton

• a molecule

• an atom

• an electron

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NGSS.MS-PS1-1

What characteristic feature of a wave is indicated by the letter C on the diagram below?

• amplitude

• loudness

• wavelength

• frequency

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NGSS.MS-PS4-1

How do chemical reactions affect the properties of matter?

• Chemical reactions can change the composition and structure of matter, leading to changes in its properties.

• Chemical reactions can only change the temperature of matter

• Chemical reactions only affect the color of matter

• Chemical reactions have no effect on the properties of matter

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NGSS.MS-PS1-2

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What is the law of conservation of mass in chemical reactions?

• Matter is neither created nor destroyed, only rearranged.

• Matter disappears completely in chemical reactions

• Matter is constantly created and destroyed

• Matter can be transformed into energy in chemical reactions

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NGSS.MS-PS1-5

What are the signs of a chemical reaction?

• No change in temperature

• Formation of a solid

• Increase in volume of liquid

• Change in color, production of gas, formation of a precipitate, change in temperature

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NGSS.MS-PS1-2

What are the different states of matter and their properties?

• Round, square, and triangle with different colors

• Hot, cold, and warm with different textures

• Red, blue, and green with different shapes

• Solid, liquid, and gas with different properties

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How do you classify matter based on its physical and chemical properties?

• By its color and shape

• By its physical and chemical properties

• By its location and size

• By its taste and smell

What is a chemical reaction?

• A process that leads to the transformation of one set of chemical substances to another

• A process that leads to the transformation of energy

• A process that leads to the transformation of biological substances

• A process that leads to the transformation of physical substances

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NGSS.MS-PS1-1

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