Lab Chemical Reactions and Equations, Compounds and their Bonds Flashcards
1
Q
Physical Change
A
a substance changes its appearance but not its composition
ex) solid silver turns into liquid silver
2
Q
Chemical Change
A
a substance is converted to one or more new substances w different properties
3
Q
Evidence of Chem Change
A
formation of gas (bubbles)
formation of solid (precipitation)
change in color
heat is produced or absorbed
4
Q
Types of Chem Rxn (5)
A
1 Combination 2 Decomposition 3 Single-displacement 4 Double-displacement 5 Combustion
