Physical Changes~Chemical Reactions

When a physical change takes place, the ______________________________ remains the same after the physical change.

• shape of the substance

• appearance of the substance

• identity of the substance

Tags

NGSS.MS-PS1-4

What is the only change to a substance that undergoes a physical change?

• chemical identity

• appearance

• molecular arrangement

• temperature

Tags

NGSS.MS-PS1-4

When substances are mixed together, sometimes a chemical change (reaction) takes place. How would we know if a chemical change took place?

• a new substance with new properties is formed

• the chemical identity remains the same, but color changes

• if a gas was created

Tags

NGSS.MS-PS1-2

A chemical reaction is the process in which ________ are rearranged to produce different substances.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What name is given to the original substance involved in a chemical reaction?

• product(s)

• reactants

• reactionaries

• revolutionaries

• particles

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During a chemical reaction, the new substance(s) that form from the reactants are known as _____________?

• reactants

• chemical identities

• subunits

• product(s)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following are considered a physical change?

• chopping wood

• mixing/combining different colored Playdoh balls

• getting grass stains on your pants

• making toast

• photosynthesis

Tags

NGSS.5-PS1-3

NGSS.5-PS1-4

Which of the following are considered chemical changes?

• campfire

• food digestion in your stomach

• baking muffins

• shaving your dog bald

• mushroom breaking-down a dead leaf

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How do we know a chemical change happened when we mixed baking soda and vinegar?

• a gas was formed that filled a balloon

• the vinegar changed colors

• the baking soda disappeared

• the student has rubber gloves on

Tags

NGSS.MS-PS1-2

I went into my fridge last night and drank some milk, it was sour and tasted "icky." What happened?

• physical change

• chemical change

• no change, just drink it and quit complaining

• I actually enjoy that taste

Tags

NGSS.MS-PS1-2