Evidence of Chemical Change Exit Ticket

Reactants are the chemicals that are present at the beginning of an experiment. Reactants react together to make the product.

We can know that a chemical reaction is occurring when we see ______.

• that the product looks just like the reactants.

• that the product looks different from the reactants.

• nothing new.

Tags

NGSS.MS-PS1-2

Which of the following is evidence of a chemical reaction?

• Tearing.

• Production of a gas.

• Production of a precipitate.

• Unexpected change in color.

• Change in temperature.

Tags

NGSS.MS-PS1-2

Evidence of a chemical reactions is anything that shows - 

• a new substance has formed

• interaction between 2 gases

• a solid dissolved in a liquid

• a change in the state of matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are chemical changes/reactions?

• It's when you mix substances.

• When something bubbles.

• when the appearance of the substances change.

• a process in which atoms rearrange to form new substances

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Bubbling and fizzing is evidence that a ________ is forming.

• liquid

• solid

• gas

• plasma

Tags

NGSS.MS-PS1-2

A precipitate is a ___________ that is deposited from a solution.

• gas

• solid

• liquid

• plasma