Physical or chemical Reactions
A match burning.
What is a chemical reaction?
Ice.
What is a solid?
Properties which are observed using our five senses.
What are physical properties?
2 H2 + O2 = 2 H2O
What is synthesis or combination?
pH less then 7
What is an acid?
A candle melting.
What is a physical reaction?
Air in a balloon.
What is a gas?
Conductivity: physical or chemical property?
What is physical?
Type of reaction where a metal like magnesium replaces hydrogen producing hydrogen gas.
What is single replacement or single displacement?
They taste bitter and feel slippery.
What is a base?
What is a chemical reaction?
Water turns to water vapor.
What is vaporization? (or boiling or evaporation)
Some chemicals are toxic. (physical or chemical property?)
What is a chemical property?
NaOH + HCl = NaCl + H2O
What is Acid/Base Reaction?
Give off H+ ions.
What is an acid?
Smashing playdough with your hand.
What is a physical reaction?
Dry ice turns into a gas without turning to a liquid.
What is sublimation?
Density... is it an extensive or intensive property?
What is intensive?
Type of reaction which always produces carbon dioxide and water.
What ion will a base produce?
OH- (hydroxide)
Plants dieing and decomposing (breaking down).
What is a chemical reaction?
When frost is formed on the trees when its really cold it turns from a vapor to a solid without entering the liquid state.
What is deposition?
Asbestos is not-flammable. Physical or chemical property?
What is chemical?
Balance this reaction:
CaCl2 + NaPO4 = NaCl + Ca(PO4)2
CaCl2 + 2 NaPO4 = 2 NaCl + Ca(PO4)2
What two products are always produced by an acid/base neutralization reaction?
What are salt and water?