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
shutvik [7]
3 years ago
8

Which of these is caused by a chemical change?

Chemistry
1 answer:
IRISSAK [1]3 years ago
8 0
I think that is A is the answer.
You might be interested in
Which of the following is one way that nuclear reactions differ from chemical<br> reactions?
Juliette [100K]

Answer:

Nuclear reaction takes place at the nucleus whereas chemical reaction involves valence electrons

Explanation:

6 0
3 years ago
All elements are pure substances.<br><br> True<br><br> False
oee [108]
It can be a compound or a single element. An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements, but carbon, hydrogen, nitrogen and oxygen are only a few that make up the largest portion of Earth.
hopefully that helps
5 0
3 years ago
The following is a procedure that was theoretically performed by a student. Read through the procedure and answer the questions
yKpoI14uk [10]

Answer:

CaCl2 (aq) + K2CO3(aq) ---------> CaCO3(s) + 2KCl(aq)

Explanation:

We have the reactants as calcium chloride and potassium carbonate. Recall that we are expecting that the reaction will yield a precipitate. We must keep that in mind as we seek to write its balanced chemical reaction equation.

So we now have;

CaCl2 (aq) + K2CO3(aq) ---------> CaCO3(s) + 2KCl(aq)

Recall that the rule of balancing chemical reaction equation states that the number of atoms of each element on the right side of the reaction equation must be the same as the number of atoms of the same element on the left hand side of the reaction equation.

6 0
3 years ago
As more bulbs are connected in series in a circuit, what happens to the brightness with which each glows?
madam [21]
They dim unless more volts are added (batteries")
8 0
3 years ago
Read 2 more answers
What feature is forming ?
IRISSAK [1]

Answer:

Earthquake

Explanation:

Notice how it is starting to shift allowing the earthquake to form.

3 0
3 years ago
Other questions:
  • Is anyone good with science?
    5·1 answer
  • In the diagram below, particles of the substance are moving from the liquid phase to the gas phase at the same rate as they move
    11·2 answers
  • Iron(II) can be oxidized by an acidic K2Cr2O7 solution according to the net ionic equation: Cr2O72− + 6Fe2+ + 14H+ → 2Cr3+ + 6Fe
    12·1 answer
  • a collection of nerve fibers through which impulses travel between the central nervous system and other parts of the body
    12·1 answer
  • Which of the following conclusions can be drawn from JJ Thomson's cathode ray experiments?A.) Atoms contain electronsB.) Practic
    6·1 answer
  • I NEED HELP ASAP!!!!!!<br> Which energy profile best shows that the delta Hf of H2S is -20.6 kJ/mol?
    6·1 answer
  • When a 18.0 mL sample of a 0.308 M aqueous hydrofluoric acid solution is titrated with a 0.361 M aqueous sodium hydroxide soluti
    7·1 answer
  • In the Fischer esterification reaction, a carboxylic acid reacts with an excess of alcohol in acidic conditions to form an ester
    6·1 answer
  • A bucket gets filled faster at ground floor then at 2nd floor .<br>give reason​
    14·1 answer
  • How many grams of Br are in 445 g CaBr2 ?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!