NGSS.MS-PS1-2

Which is the name of the kind of solid substance formed in this figure?  

• aqueous 
• precipitate
• acid
• synthesis 

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NGSS.MS-PS1-2

Which of these is not a chemical reaction?

• Burning of wood
• Milk going bad
• Mixing vinegar and baking soda
• Melting of ice

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NGSS.MS-PS1-2

a substance formed as a result of a chemical reaction

• product
• reactant

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NGSS.MS-PS1-2

When you break a cracker into pieces it is a 

• Chemical change
• Physical change
• Chemical Weathering
• Physical Weathering

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NGSS.MS-PS1-2

Which statement best describes what happens during a chemical change?

• Both the identity and the properties of a substance change.

• Some properties of a substance change, but its identity remains the same.

• The chemical properties of a substance change, but its physical properties remain the same.

• The physical properties of a substance change, but its chemical properties remain the same.

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NGSS.MS-PS1-2

When sodium reacts with water it produces ___________

• hydrogen

• carbon dioxide

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NGSS.MS-PS1-2

Which statement is not a description of a chemical reaction?

• A solid is dropped into a beaker of liquid and a gas is released.

• A solid is dropped into a beaker of liquid and an explosion occurs.

• Two liquids are mixed in a beaker and a solid forms at the bottom of the beaker.

• A liquid is heated in the sun and half of it evaporates.

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NGSS.MS-PS1-2

For a laboratory investigation some students put a strip of shiny metal into a beaker of blue solution and then stored the beaker on a shelf overnight. The next morning, the students recorded observations about the metal and the solution in the box below.

Based on their obsevations, can the students correctly conclude that a chemical reaction occurred?

• No, because the metal strip was still visible

• Yes, because a new material of a different color formed on part of the metal strip

• No, because the solution stayed blue

• Yes, because the volume of the blue solution stayed the same

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NGSS.MS-PS1-2

Flammability is a ______ of a substance.

• good time

• property

• character

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NGSS.MS-PS1-2

Which is an example of a chemical reaction?

• a pot of water boiling

• an iron nail rusting

• a piece of ice melting

• a sugar cube dissolving in tea

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NGSS.MS-PS1-2