Experiment 1

Classes of Chemical Reactions

chemical reaction

one or more new substances are produced

product

properties and composition are different

chemical equation

used to reveal the four patterns of chemical reactivity

combination reaction

two or more reactants from one product

decomposition reaction

compound breaks into two or more substances

single-replacement reaction

element and a compound react to form another element or compound

double-displacement reaction

two compounds switch places to form new products; one is usually a precipitate

HCl

hydrochloric acid

3M

__hydrochloric acid (HCl)

AgNO3

silver nitrate

0\.1M

__silver nitrate (AgNO3)

Na2CrO4

sodium chromate

C12H22O11

sucrose

Mg ribbon and distilled water

reagent/s used in combination reaction

sucrose

reagent/s used in decomposition

mossy zinc and hydrochloric acid

reagent/s used in single-replacement

sodium chromate and silver nitrate

reagent/s used in double displacement

Mg ribbon; crucible tongs; bunsen burner

combination:

hold a small piece of -- with a pair of --. ignite it using a --.

test tube; 20; water; stirring rod; blue and red litmus papers; watch glass

combination:

drop the product into a --, add -- drops of -- , and shake the contents well. Dip a -- in the mixture and let it touch -- seated on a --.

pinch; sucrose; deflagrating spoon; no further

decomposition:

place a -- of -- in a -- and heat it with the sugar until -- change is seen.

20; 3M HCl; test tube; 1; mossy zinc

single replacement:

place -- drops of -- into a -- and add -- piece of --.

10; 0.1 sodium chromate; test tube; 10; 0.1M silver nitrate

double displacement:

place -- drops of -- into a -- and add -- drops of --.

law of conservation of mass

atoms are neither created nor destroyed in a chemical reaction

symbol for heat

△

reactivity

whether or not an element can displace another element that is a part of a compound is determined by its --

False - HCl is corrosive which is why it should always be in the fume hood

T or F: HCl is NOT corrosive, so the bottle should always be in the fume hood.

False - heavy metal waste bottle

T or F: silver nitrate, sodium chromate, and mossy zinc dissolved in HCl must be disposed in the heavy metal waste bin.

False - biodegradable

T or F: litmus paper must be disposed in the non-biodegradable trash bin

True

T or F: labels of beakers must be disposed in the biodegradable trash bin