Law Of Conservation of Matter

An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?

• 15 grams
• 25 grams
• 20 grams

The Law of Conservation of matter states that the total amount of matter ______________ after it undergoes change.

• disappears
• stays the same
• weighs less
• explodes

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction
• Mass is created in a physical change
• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
• Mass is never created or destroyed

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. The solution weighs...

• 250 grams

• 375 grams

• 380 grams

• 400 grams

Tags

NGSS.MS-PS1-5

Sarah and Jake were each given a ball of clay that has a mass of 400 grams. Both students used all their clay to make an object. Sarah rolled hers into a ball, and Jake made a long, skinny rope. What is the mass of the clay figures now?

• Sarah's weighs more because it is round

• Jake's weighs more because it is long

• There is no way of knowing

• They figures would have equal masses.

5 grams of salt is dissolved in 100 mL of water to form a salt water solution. The solution is heated and all the water evaporates as steam. How much salt would you expect to have left in the container?

• 2.5 grams

• 5 grams

• 105 grams

• 500 grams

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Stuart measures 10 grams of water into a pan and then freezes it. A day later, he takes the ice cube out of the pan and notices that it is larger than before. What will its mass be?

• 10 grams

• 11 grams

• 20 grams

• impossible to know

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-4

What will have more mass when a chemical change is complete: the reactants before the chemical reaction or the product after the reaction is complete?

• They both will have the same mass

• The product always has more mass than the reactant

• The reactant will have more mass than the product

• They both will lose mass after the reaction

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Matter is anything that ---

• takes up space and has mass.

• is in our universe.

• is light, sound or ideas.

The Law of Conservation of Matter states that the total amount of matter _____ after it undergoes change.

• disappears

• stays the same

• weighs less

• explodes

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2