Q.1
An _______ change cannot be undone because the change is permanent and generally creates a new substance.
  • Reversible
  • Irreversible
Q.2
Of the changes below, which is NOT an irreversible change:
  • rusting
  • cooking
  • melting
  • burning
Q.3
This is when a solid changes to a liquid
  • Melting
  • Evaporation
  • Freezing
  • Boiling
Q.4
Which is not a property of matter?
  • solid
  • liquid
  • gas
  • ice
Q.5
What type of reactions can able to change products back to the their original form?
  • Reversible reactions
  • Irreversible reactions
  • Combustion reactions
  • Combination reactions
Q.6
Choose the TWO reversible changes:
  • Both A & B
  • usting
  • freezing
  • condensing
Q.7
The freezing and melting points of water are the same.
  • True
  • False
Q.8
When a liquid reaches the temperatures of its ___, it can become a gas.
  • melting point
  • freezing point
  • boiling point
  • density
Q.9
When a solid reaches the temperatures of its ___, it can become a liquid.
  • melting point
  • freezing point
  • boiling point
  • density
Q.10
Burning wood is a reversible change.
  • True
  • False
Q.11
What is a gas?
  • Gases have their own shape and size.
  • Gases take the shape of their container.
  • Gases spread out to fill space.
Q.12
What is a solid?
  • Solids have their own shape and size.
  • Solids take the shape of their container.
  • Solids spread out to fill space.
Q.13
What is a liquid?
  • Liquids have their own shape and size.
  • Liquids take the shape of their container.
  • Liquids spread out to fill space.
Q.14
Which of these is NOT a reversible change?
  • Water to Ice
  • Juice to Popsicle
  • Cookie Dough to Cookie
  • Melting Chocolate
Q.15
When you cook pancakes, is the change reversible or irreversible?
  • reversible
  • irreversible
Q.16
What is a reversible change?
  • a change that can be undone or reversed
  • a change that CANNOT be undone or reversed
Q.17
What is an irreversible change?
  • A change that can be undone or reversed
  • A change that cannot be undone or reversed
Q.18
When ice melts in the sun, is that change reversible or irreversible?
  • reversible
  • irreversible
Q.19
When you burn logs from trees, is that change reversible or irreversible?
  • reversible
  • irreversible
Q.20
When you boil water on the stove, is the change reversible or irreversible?
  • reversible
  • irreversible
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