chemestry quiz

A A . AB 🡪 A + B ∆H =537 Kj

exo

B. Energy is absorbed

ENDO

C. Temperature increases during a reaction

EXO

D. A + B 🡪 AB ∆H = 1442 Kj

Endo

E. energy is released

EXO

F. The reaction feels cold

ENDO

^ H

ethapaly ; change in heat 

ethaplay formula

e products- e reactants

collision theory

The collision theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

4 ways to speed up reactions

Increase temperature, concentration, surface area, or use a catalyst.

double replacement

solve then check its form of matter before fixing charges

single replacement

use chart 

if its negtive

exothermic

if its positive

endo thermic