5.01 Day 2 Additional Practice

Can matter be created or destroyed?

• Yes, it can be created.
• Yes, it can be destroyed.
• No, matter is always conserved
• None of these

Tags

NGSS.MS-PS1-5

The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.

• True
• False

Tags

NGSS.MS-PS1-5

What is the law of conservation of mass?

• Matter changes when reacted or changed.
• The mass of all reactants are changed during a physical or chemical change
• The mass of the reactants is the same as the mass of the products
• The mass of the products is different than the mass of the reactants.

Tags

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

All chemical equations create or destroy matter, which is why scientists weigh their reactants so they can see how much was created or destroyed

• True
• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

10 g of a solid chemical reacts with a 10 g of a liquid chemical, the reaction bubbles and changes the color of the liquid.  The colored liquid weighs 13 g, what can be concluded?

• The gas produced from the bubbles weighed 5 g
• The bubbles were evidence of 7 g of matter being destroyed
• The gas produced weighed 7 g
• The gas produced weighed 13 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Since gasses weigh nothing, when they are produced in a reaction they do not have to be accounted for.  

• True
• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If four hydrogen atoms react with two hydrogen atoms, how many atoms will be in the product?

• 6
• 4
• 8
• 2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The principle of conservation of mass is true for

• Physical Changes
• Chemical Changes
• Neither
• Both

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The principle of conservation of mass is true for

• Only reactions in an open system
• Only reactions in a closed system
• For reactions in both an open and closed system
• No reactions

Tags

NGSS.MS-PS1-5