Physical Chemical Change Conservation Of Mass

Water freezing into ice is an example of a...

• Physical Change
• Chemical Change

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NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following indicates a chemical change?

• Change in state of matter
• Temperature change
• Change in size 
• Change in shape

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NGSS.MS-PS1-2

Physical or Chemical Change?  Iron rusts

• Physical Change
• Chemical Change

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NGSS.MS-PS1-2

Physical or Chemical Change?  Cutting an orange into wedges.

• Physical Change
• Chemical Change

Physical or Chemical Change?  Making a paper airplane.

• Physical Change
• Chemical Change

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NGSS.MS-PS1-2

What does the principle of conservation of mass mean?

• The total mass of the reactants is more than the products
• Matter is not created or destroyed
• The total mass of the reactants is less than the products

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?

• They both will weigh the same
• The product always weighs more than the reactant
• The reactant will weigh more than the product
• They both will loose mass after the reaction

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 

• 4g
• 5g
• 9g
• 14g

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NGSS.MS-PS1-5

How much does a 5 gram Hershey's kiss weigh after it is melted in the microwave?

• 5 grams
• 3 grams
• 7 grams

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 

• 2
• 4
• 6
• You need more information to answer this question

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NGSS.MS-PS1-5

NGSS.MS-PS1-1