NGSS.MS-PS1-2

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

 Which is NOT an example of chemical change?

• production of gas.
• change in color.
• change in size.
• transfer of energy.
  

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NGSS.MS-PS1-2

This table displays

• price values of the metals.
• chemical properties of the metals.
• physical properties of the metals.
• corrosive resistance of the metals.

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NGSS.MS-PS1-2

Is Gatorade powder dissolving in water physical or chemical change?

• Physical 
• Chemical

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NGSS.MS-PS1-2

Which change creates a NEW substance?

• Physical change

• Chemical Change

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NGSS.MS-PS1-2

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?

• The powder DISSOLVED in the water

• The water turned the COLOR yellow

• The bag's TEMPERATURE changed

• The STATE OF MATTER changed

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NGSS.MS-PS1-2

When coal burns in air then

• Carbon dioxide is formed

• Sulphur dioxide is formed

• Carbon monoxide is formed

• Hydrogen gas is formed

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NGSS.MS-PS1-2

Burning of charcoal in a closed room will produce

• carbon dioxide

• nitrogen dioxide

• carbon monoxide

• all of these

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NGSS.MS-PS1-2

Vinegar + baking soda reaction.

Is it a physical or chemical change?

• Physical

• Chemical

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NGSS.MS-PS1-2

Which shows one example of a physical change and one example of a chemical change?

• boiling water and melting wax

• rusting iron and baking a cake

• dissolving powder and shredding paper

• freezing water and burning coal

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NGSS.MS-PS1-2