Comparing Physical Changes & Chemical Reactions

Sawing a piece of wood in half is an example of a.........?

• chemical reaction

• physical change

• chemical property

• physical property

A ______________ ______________ changes the identity of a substance.

If you were to break a glass bottle on the ground into a hundred pieces, what has actually taken place?

• chemical reaction

• chemical change

• physical change

• uhhh....you broke the littering law

When a chemical change occurs, the original substance changes into a different substance, but the properties stay the same.

• Yep, that's how I understand it.

• No...this is describing a physical change

• No dude, the properties would change as well

• Sort of.....it depends on the original substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is rearranged during a chemical reaction to produce a different substance w/ different properties?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If I mix baking soda & vinegar together to produce a new substance, what are baking soda & vinegar considered?

• products

• molecules

• reactants

• atoms

• bubbles

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Please identify the PRODUCTS from the chemical reaction in the image.

• CH₄

• CO₂

• 2O_{2 -------->} CO₂

• CO_{2 +} 2H₂O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Will the ATOMS present in the REACTANTS of a chemical reaction be present in the PRODUCTS?

• I don't think so

• Yes

• No

• matter is neither created nor destroyed

Tags

NGSS.MS-PS1-5

How many DIFFERENT types of atoms are involved in this chemical reaction?

• 1

• 2

• 3

• 16

• 17

Tags

NGSS.MS-PS1-1

Before & after of the same metal bucket. Which changes have happened to the bucket?

• a chemical reaction has formed a new substance

• the metal has changed to a different state

• the metal has reacted with air to form rust

• the color has changed to a dark, reddish color

• atoms have been rearranged to form a new substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5