Physical -vs- Chemical

• the particles get smaller
• the volume of matter decreases
• the composition of matter stays the same
• the particles change into particles of another substance

• physical
• chemical

Which is a process of a chemical change?

• steam rising from a boiling pot of soup
• alcohol evaporating from a cotton swab
• a metal railing rusting in damp weather
• a piece of wood shrinking as it dries out

physical changes are...

• permanent
• reversible
• temporary
• irreversible 

What is the definition of a Physical property?

• any property that can't change physically.
• any property that is measurable.

What is a chemical change?

• When you mix two substances
• The change of physical properties
• When a substance combines with another tomake a new substance
• When you rip up peices of paper

melting is a chemical change

• true 
• false

A mixture is the result of a physical change because...

• The parts can be separated
• A new substance is made
• There is a chemical reaction
• One part of the mixture disappears

A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?

• Texture
• Temperature
  
• Shape
•  Mass

Which of these is a result of a physical change?

• A new odor
• A new gas
• A new chemical substance
• A solution