Chem - Law of Conservation of Matter

If reaction starts with 20g of reactants it should produce... 

• a total of 40g of product
• a total of 10g of product
• a total of 80 g of product
• a total of 20g of product

Tags

NGSS.MS-PS1-5

10g of white powder reacts with 10g of clear liquid. The reaction bubbles and changes color producing a black liquid that has a mass of 13g. What can be concluded?

• 5g of gas was produced
• This experiment violates the conservation of mass
• 7g of gas was produced
• The excess reactant is destroyed & disappears during the reaction

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Ideally, what would the mass of the closed bag of vinegar and baking soda be after the reaction completed?

• The same

• Less

• More

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What would be the mass of open bag of vinegar and baking soda be after the reaction was completed?

• The same

• More

• Less

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What must be true if something increases in mass after a chemical change?

• Matter was created

• Matter from outside of the system was added

• Matter was destroyed

Tags

NGSS.MS-PS1-5