Q.1.
An _______ change cannot be undone because the change is permanent and generally creates a new substance.
Q.2.
Of the changes below, which is NOT an irreversible change:
Q.3.
This is when a solid changes to a liquid
Q.4.
Which is not a property of matter?
Q.5.
What type of reactions can able to change products back to the their original form?
Q.6.
Choose the TWO reversible changes:
Q.7.
The freezing and melting points of water are the same.
Q.8.
When a liquid reaches the temperatures of its ___, it can become a gas.
Q.9.
When a solid reaches the temperatures of its ___, it can become a liquid.
Q.10.
Burning wood is a reversible change.
Q.11.
What is a gas?
Q.12.
What is a solid?
Q.13.
What is a liquid?
Q.14.
Which of these is NOT a reversible change?
Q.15.
When you cook pancakes, is the change reversible or irreversible?
Q.16.
What is a reversible change?
Q.17.
What is an irreversible change?
Q.18.
When ice melts in the sun, is that change reversible or irreversible?
Q.19.
When you burn logs from trees, is that change reversible or irreversible?
Q.20.
When you boil water on the stove, is the change reversible or irreversible?