Unit 6 Flashcards
1
Q
Law of conservation of matter
A
Matter cannot be created nor destroyed during a chemical change, matters only rearranged
2
Q
Reactants = _____ side, products _____ side. + signs mean _____
A
Left, right, and
3
Q
Total number of Atoms must be ______ on both sides of the equation
A
The same
4
Q
7 elements must have subscript 2
A
HOFBRINCL
5
Q
Composition reactions (2 to 1)
A
A+B=AB
oxidation numbers add to 0
6
Q
Single replacement , double replacement
A
AB + X= XB + A
AB + CD = AD + CB
