1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Murljashka [212]
3 years ago
14

Which activity is an example of chemical change?

Chemistry
1 answer:
frutty [35]3 years ago
3 0
An old penny rusting, remember you can’t undo a chemical change
You might be interested in
Elemental mercury combines with oxygen to make mercury oxide. write a balanced equation
Ilia_Sergeevich [38]
Hg + O2 --> HgO + O

Note that Mercury has a variable valency. 

6 0
3 years ago
A carbon forms one bond to an X atom plus three more bonds to three hydrogen atoms. If the hybridization to X has 81% p-characte
liraira [26]

Answer:

110 degree

Explanation:

This is because Hybridization of an s orbital with all three p orbitals (px , py, and pz) results in four sp3 hybrid orbitals. sp3 hybrid orbitals are oriented at bond angle of 109.5 degrees from each other. This 109.5 degrees gives an arrangement of tetrahedral geometry

5 0
4 years ago
The mass of a substance per unit volume
Wittaler [7]
The mass of a substance per unit volume is the substance's density.

D = m/v.
5 0
3 years ago
Which two elements have chemical properties that are most similar?
masya89 [10]

Answer:

Li and Na

Explanation:

5 0
3 years ago
Why are 1-chlorobutane and 2-chlorobutane structural isomers?.
Nutka1998 [239]

Answer: they both have the same molecular formula but different structural formulae

Explanation:

hope this helps :)

6 0
2 years ago
Other questions:
  • Question 22 A mixture of krypton and argon gas is expanded from a volume of 33.0L to a volume of 61.0L , while the pressure is h
    14·1 answer
  • If electricity comes from electrons, does morality come from morons?
    8·2 answers
  • Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than i
    9·1 answer
  • What rock has a hardness of 4,and has a dull luster. What is it?
    7·1 answer
  • Match the appropriate name for each chemical reaction description provided.
    6·2 answers
  • Why does this experiment need a water pump?
    13·1 answer
  • Which of the following will only affect the reaction rate of gases?
    8·1 answer
  • At 47c a gas has a pressure of 140kpa. The gas is cooled until the pressure decreases to 105kpa. If the volume remains constant,
    13·1 answer
  • I have it attached plz help ASAP
    14·1 answer
  • What is the chemical name for OBr2?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!