Leap Review

Fizzing, foaming, and burning are all examples of

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

Rust on an iron bar is an example of chemical change.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Photosynthesis is an example of a

• physical change

• chemical change

Tags

NGSS.MS-LS1-6

A chemical reaction is balanced when

• both sides have the same elements

• Both sides have the same  number of atoms

• Same subscripts

• Same coefficients

Tags

NGSS.MS-PS1-5

A precipitate is a 

• liquid that forms when two solids are reacted

• a solid that forms when two liquids are mixed

• a gas that forms when vinegar and baking soda react

• a change of color in a solution

Tags

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

These molecules represent which state of matter?

• Solid

• Liquid

• Gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase change is happening between point B and C?

• Condensating

• Melting

• Evaporating

Tags

NGSS.MS-PS1-4

A substance that has a definite shape and volume.

• evaporation

• gas

• liquid

• solid

Tags

NGSS.5-PS1-3

the temperature at which it transforms from the solid state into the liquid state.

• boiling point

• melting point

• density

• viscosity

Tags

NGSS.MS-PS1-4