Classify each of the following as a physical or chemical change
or property.
a. oven cle...
Chemistry, 07.10.2019 04:10 liddopiink1
Classify each of the following as a physical or chemical change
or property.
a. oven cleaners contain sodium hydroxide, which converts
the grease/oil spatters inside the oven to water-soluble mate-
rials, which can be washed away.
b. a rubber band stretches when you pull on it.
c. a cast-iron frying pan will rust if it is not dried after
washing
d. concentrated hydrochloric acid has a choking, pungent
odor.
e. concentrated hydrochloric acid will burn a hole in cotton
jeans because the acid breaks down the cellulose fibers in
cotton.
f. copper compounds often form beautiful blue crystals when
a solution of a given copper compound is evaporated slowly.
g. copper metal combines with substances in the air to form
a green "patina" that protects the copper from further
reaction.
h. bread turns brown when you heat it in a toaster.
i. when you use the perfume your boyfriend gave you for your
birthday, the liquid of the perfume evaporates quickly from
your skin.
j. if you leave your steak on the gas grill too long, the steak
will turn black and char.
k. hydrogen peroxide fizzes when it is applied to a cut or
scrape.
Answers: 1
Chemistry, 22.06.2019 13:50
Abeaker with 2.00Γ102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
Answers: 1
Chemistry, 22.06.2019 17:40
How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?
Answers: 3
Chemistry, 22.06.2019 19:50
Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+
Answers: 1
Chemistry, 22.06.2019 22:00
What mass of glucose is produced when 54g of water react with carbon dioxide
Answers: 1
Biology, 25.05.2021 18:30
Chemistry, 25.05.2021 18:30
Chemistry, 25.05.2021 18:30
Arts, 25.05.2021 18:30
Mathematics, 25.05.2021 18:30
Mathematics, 25.05.2021 18:30
Social Studies, 25.05.2021 18:30
Social Studies, 25.05.2021 18:30
Spanish, 25.05.2021 18:30
Biology, 25.05.2021 18:30