Chemical vs Physical Reactions

Is milk going sour a physical or chemical change?

• Physical 

• Chemical

Tags

NGSS.MS-PS1-2

Hard-boiled eggs are the a result of a chemical change because

• the eggs are the same size before vs after.

• the eggs have different properties (smell, taste, color) before vs after.

• the eggs weigh the same before vs after.

• the eggs went through a phase change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Any time something burns, it is going through a

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A copper penny turning green after a few years is an example of ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

Olivia and Mason were having a science experiment in the kitchen. Olivia left a glass of milk on the counter overnight as part of their experiment. The next day, they discovered it had gone sour. This is a (a)   change.

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Which of the following does NOT indicate a chemical change?

• color change

• A new smell is produced.

• A new substance is created.

• shape change

Tags

NGSS.MS-PS1-2

Bubbles form when two or more substances are combined is a (a)  

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

An explosion occurs is a (a)  

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical reaction, what are the substances called that start the reaction?

• Products

• Catalysts

• Reactants

• Enzymes

🔬🎉 Let's dive into the world of chemistry with Nate and Melanie! Can you identify which of these exciting examples are actually chemical changes? Put on your scientist hat and choose 3 answers wisely! 🧪👩‍🔬

• Breaking a piggy bank

• fireworks exploding

• getting a haircut

• melting icicle

• hammering metal

• mixing baking soda and vinegar

• a rusty nail

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5