Last of Q9 Flashcards
1
Q
What are reactents?
A
the substances at the begging of a chemical reaction
2
Q
What are products?
A
the new substances made at the end of a chemical reaction
3
Q
What are the two reasons for balencing a chemical equation?
A
- to preserve the law of conservation of mass and matter
- to show how it would really work in nature
4
Q
What is the coefficient?
A
the large # that tells you how many atoms, compounds, oe molecules are taking part in the reaction
5
Q
What are the elements that have to be in pairs when they are alone?
A
H,O,F,Br,I,N, Cl
