chemical and phisical changes

Is melting cheese a chemical or phisical change

• Chemical

• Phisical

• Neither

• Both

Answer explanation

Melting cheese is a phisical change because it is still cheese!

I mixed sand and iron filings together. I created a mixture, which is a physical change. What is the best way for me to separate the sand from the iron filings?

• pour water over it

• freeze the mixture

• pour the mixture through a mesh screen

• pull a magnet through the mixture

What is true of the solid in this picture?

• the water becomes a solid when the temperature is below 0° C

• The solid will boil at 0 degrees Celsius (0° C)

• The solid will evaporate at 0 degrees Celsius (0° C)

• The solid will melt at 0 degrees Celsius (0° C)

Which of the following examples represents a physical change?

• 
• 
• 
• 

Which of the following examples is a physical change but NOT a change of state of matter?

• logs burning

• water freezing into ice cubes

• candle wax melting

• paper being cut

Molecules are formed when two or more ________ join together.

• blocks
• books
• atoms
• sizes

A ___________ change leads to the formation of a different substance.

• Physical change
• Chemical change

Anything that has mass and takes up space is called

• stuff
• forrce
• gravity
• matter

Frying an egg is an example of a 

• Chemical change
• Physical change

Melting butter to pour over popcorn is a 

• Chemical change
• Physical change