Year 7 - Chapter 2 Overall Revision Flashcards
1
Q
What are groups?
A
The ‘columns’ in the periodic table
2
Q
What are periods?
A
The ‘rows’ in the periodic table
3
Q
What is the conservation of mass?
A
Mass is not created or destroyed during a chemical reaction.
4
Q
What is a physical change?
A
It is reversible.
5
Q
What is a chemical change?
A
An irreversible change.
